{"title":"BC Racing","description":null,"products":[{"product_id":"bc-racing-br-series-coilovers-audi-r8-08-15","title":"BC Racing BR-Series Coilovers Audi R8  08-15","description":"\u003cp\u003eThe BR series coilovers use a large 46mm diameter piston in a 53mm diameter damper body to maximise oil capacity.\u003c\/p\u003e \u003cp\u003eAs the damper unit operates the oil contained within heats up. The viscosity of oil changes as its temperature varies which can lead to changes in the damping characteristic of the unit.\u003c\/p\u003e \u003cp\u003eBC Racing only use a very high quality oil with their coilovers but go that extra mile to maximise performance and build their BR range with a large 53mm diameter damper body. This increases the capacity of the unit which increases the volume of oil contained which in turn reduces the peak temperature and so significantly improves damper performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCorner weight adjustment\u003c\/h2\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eRide height adjustment\u003c\/h2\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eDamping adjustment\u003c\/h2\u003e \u003cp\u003eBR coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePillowball (rose joint) upper mount\u003c\/h2\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCamber adjustment\u003c\/h2\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCorrosion protection\u003c\/h2\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality coil springs\u003c\/h2\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePatented concave lower locking collar\u003c\/h2\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality oil\u003c\/h2\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eNitrogen pressurised dampers\u003c\/h2\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eBearing mounted upper spring platform\u003c\/h2\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62759561232714,"sku":"BC-0030630","price":1049.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-br-series-coilovers-audi-r8-08-15-180_6894a704-e65c-4dbc-85fb-722f4be6d149.webp?v=1784422614"},{"product_id":"bc-racing-br-series-coilovers-audi-s1-8x-15-18","title":"BC Racing BR-Series Coilovers Audi S1 8X 15-18","description":"\u003cp\u003eThe BR series coilovers use a large 46mm diameter piston in a 53mm diameter damper body to maximise oil capacity.\u003c\/p\u003e \u003cp\u003eAs the damper unit operates the oil contained within heats up. The viscosity of oil changes as its temperature varies which can lead to changes in the damping characteristic of the unit.\u003c\/p\u003e \u003cp\u003eBC Racing only use a very high quality oil with their coilovers but go that extra mile to maximise performance and build their BR range with a large 53mm diameter damper body. This increases the capacity of the unit which increases the volume of oil contained which in turn reduces the peak temperature and so significantly improves damper performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCorner weight adjustment\u003c\/h2\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eRide height adjustment\u003c\/h2\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eDamping adjustment\u003c\/h2\u003e \u003cp\u003eBR coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePillowball (rose joint) upper mount\u003c\/h2\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCamber adjustment\u003c\/h2\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCorrosion protection\u003c\/h2\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality coil springs\u003c\/h2\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePatented concave lower locking collar\u003c\/h2\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality oil\u003c\/h2\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eNitrogen pressurised dampers\u003c\/h2\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eBearing mounted upper spring platform\u003c\/h2\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62759601701194,"sku":"BC-0050659","price":1049.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-br-series-coilovers-audi-s1-8x-15-18-519_0296c656-64b4-4d23-b05f-bf169cdf6103.webp?v=1784423222"},{"product_id":"bc-racing-rm-series-coilovers-bmw-1-series-e82-11-12-inc-1m","title":"BC Racing RM-Series Coilovers BMW 1-Series E82 11-12 - Inc 1M","description":"\u003cul\u003e \u003cli\u003eInverted monotube damper bodies\u003c\/li\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eInverted damper\u003c\/h3\u003e \u003cp\u003eThe BC Racing RM series feature high quality damping adjustable monotube inverted dampers at the front or front and rear, depending on vehicle. The RM coilovers offer the majority of the features of the BR series but with the additional benefit of the inverted damper unit. Inverting the damper unit brings with it a number of advantages.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced unsprung weight\u003c\/h3\u003e \u003cp\u003eUnsprung weight is reduced by moving the oil and gas reservoir way from the hub and attaching it to the shell. Unsprung weight is vital to a cars performance as a lighter wheel and hub assembly which readily moves in response to road bumps will have more grip when tracking over an imperfect road. A high unsprung weight can lead to wheel hop over bumpy ground and will reduce the quality of the ride and also untlimate handling as anything that impairs the suspension ability to maintain contact between road and tyre will be of detriment to the cars performance.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced heat transfer to the gas and oil reservoir\u003c\/h3\u003e \u003cp\u003eAny hard driven car with generate a lot of heat within its braking system. This heat is conducted through the hub to the damper unit. By inverting the oil and gas reservoir the oil and gas is moved away from the hub assembly . This reduces the amount of conducted heat being transferred from the braking system to the hub then to the damper and then on to the gas and oil. As the oil and gas is heated its properties change which has a knock on effect on the damping characteristics of the suspension. By keeping the gas and oil temperatures down BC Racing RM coilovers keep damping rates more consistant resulting in better performing suspension and ultimately allowing you to corner faster, which is the bottom line.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced flex\u003c\/h3\u003e \u003cp\u003eThe large 42mm damper rod and inverted design gives the inverted damper units much greater strength and resistance to side loadings. By reducing flex the RM inverted units lead to more consistant steering geometry resulting in more predicatable and responsive handling.\u003c\/p\u003e \u003ch3\u003eCorner weight adjustment\u003c\/h3\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRide height adjustment\u003c\/h3\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eDamping adjustment\u003c\/h3\u003e \u003cp\u003eThe RM Series coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003ePillowball (rose joint) upper mount\u003c\/h3\u003e \u003cp\u003eMany of the BC Racing RM coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCamber adjustment\u003c\/h3\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCorrosion protection\u003c\/h3\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eHigh quality coil springs\u003c\/h3\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePatented concave lower locking collar\u003c\/h3\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality oil\u003c\/h3\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn’t degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eNitrogen pressurised dampers\u003c\/h3\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eBearing mounted upper spring platform\u003c\/h3\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking’ down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62759839367498,"sku":"BC-0030764","price":1239.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-rm-series-coilovers-bmw-1-e82-11-12-inc-1m-190_3b2bdeb2-c4f6-4c3a-a7ad-396bdd03790e.webp?v=1784424769"},{"product_id":"bc-racing-br-series-coilovers-bmw-1-series-e82-11-12-inc-1m","title":"BC Racing BR-Series Coilovers BMW 1-Series E82 11-12 - Inc 1M","description":"\u003cp\u003eThe BR series coilovers use a large 46mm diameter piston in a 53mm diameter damper body to maximise oil capacity.\u003c\/p\u003e \u003cp\u003eAs the damper unit operates the oil contained within heats up. The viscosity of oil changes as its temperature varies which can lead to changes in the damping characteristic of the unit.\u003c\/p\u003e \u003cp\u003eBC Racing only use a very high quality oil with their coilovers but go that extra mile to maximise performance and build their BR range with a large 53mm diameter damper body. This increases the capacity of the unit which increases the volume of oil contained which in turn reduces the peak temperature and so significantly improves damper performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCorner weight adjustment\u003c\/h2\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eRide height adjustment\u003c\/h2\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eDamping adjustment\u003c\/h2\u003e \u003cp\u003eBR coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePillowball (rose joint) upper mount\u003c\/h2\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCamber adjustment\u003c\/h2\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCorrosion protection\u003c\/h2\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality coil springs\u003c\/h2\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePatented concave lower locking collar\u003c\/h2\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality oil\u003c\/h2\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eNitrogen pressurised dampers\u003c\/h2\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eBearing mounted upper spring platform\u003c\/h2\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62759839400266,"sku":"BC-0007947","price":1049.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-br-series-coilovers-bmw-1-e82-11-12-inc-1m-481_8de0acfd-1b8a-4b89-a63c-a984289183b8.webp?v=1784424769"},{"product_id":"bc-racing-br-series-coilovers-bmw-1-series-e81-e87-04-13","title":"BC Racing BR-Series Coilovers BMW 1-Series E81 E87 04-13","description":"\u003cp\u003eThe BR series coilovers use a large 46mm diameter piston in a 53mm diameter damper body to maximise oil capacity.\u003c\/p\u003e \u003cp\u003eAs the damper unit operates the oil contained within heats up. The viscosity of oil changes as its temperature varies which can lead to changes in the damping characteristic of the unit.\u003c\/p\u003e \u003cp\u003eBC Racing only use a very high quality oil with their coilovers but go that extra mile to maximise performance and build their BR range with a large 53mm diameter damper body. This increases the capacity of the unit which increases the volume of oil contained which in turn reduces the peak temperature and so significantly improves damper performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCorner weight adjustment\u003c\/h2\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eRide height adjustment\u003c\/h2\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eDamping adjustment\u003c\/h2\u003e \u003cp\u003eBR coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePillowball (rose joint) upper mount\u003c\/h2\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCamber adjustment\u003c\/h2\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCorrosion protection\u003c\/h2\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality coil springs\u003c\/h2\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePatented concave lower locking collar\u003c\/h2\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality oil\u003c\/h2\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eNitrogen pressurised dampers\u003c\/h2\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eBearing mounted upper spring platform\u003c\/h2\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62759839924554,"sku":"BC-0008647","price":1049.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-br-series-coilovers-bmw-1-e81-e87-04-13-970_4f3ea464-8223-4180-841b-16d729e103a8.webp?v=1784424775"},{"product_id":"bc-racing-rm-series-coilovers-bmw-1-series-e81-e87-04-13","title":"BC Racing RM-Series Coilovers BMW 1-Series E81 E87 04-13","description":"\u003cul\u003e \u003cli\u003eInverted monotube damper bodies\u003c\/li\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eInverted damper\u003c\/h3\u003e \u003cp\u003eThe BC Racing RM series feature high quality damping adjustable monotube inverted dampers at the front or front and rear, depending on vehicle. The RM coilovers offer the majority of the features of the BR series but with the additional benefit of the inverted damper unit. Inverting the damper unit brings with it a number of advantages.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced unsprung weight\u003c\/h3\u003e \u003cp\u003eUnsprung weight is reduced by moving the oil and gas reservoir way from the hub and attaching it to the shell. Unsprung weight is vital to a cars performance as a lighter wheel and hub assembly which readily moves in response to road bumps will have more grip when tracking over an imperfect road. A high unsprung weight can lead to wheel hop over bumpy ground and will reduce the quality of the ride and also untlimate handling as anything that impairs the suspension ability to maintain contact between road and tyre will be of detriment to the cars performance.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced heat transfer to the gas and oil reservoir\u003c\/h3\u003e \u003cp\u003eAny hard driven car with generate a lot of heat within its braking system. This heat is conducted through the hub to the damper unit. By inverting the oil and gas reservoir the oil and gas is moved away from the hub assembly . This reduces the amount of conducted heat being transferred from the braking system to the hub then to the damper and then on to the gas and oil. As the oil and gas is heated its properties change which has a knock on effect on the damping characteristics of the suspension. By keeping the gas and oil temperatures down BC Racing RM coilovers keep damping rates more consistant resulting in better performing suspension and ultimately allowing you to corner faster, which is the bottom line.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced flex\u003c\/h3\u003e \u003cp\u003eThe large 42mm damper rod and inverted design gives the inverted damper units much greater strength and resistance to side loadings. By reducing flex the RM inverted units lead to more consistant steering geometry resulting in more predicatable and responsive handling.\u003c\/p\u003e \u003ch3\u003eCorner weight adjustment\u003c\/h3\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRide height adjustment\u003c\/h3\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eDamping adjustment\u003c\/h3\u003e \u003cp\u003eThe RM Series coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003ePillowball (rose joint) upper mount\u003c\/h3\u003e \u003cp\u003eMany of the BC Racing RM coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCamber adjustment\u003c\/h3\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCorrosion protection\u003c\/h3\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eHigh quality coil springs\u003c\/h3\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePatented concave lower locking collar\u003c\/h3\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality oil\u003c\/h3\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn’t degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eNitrogen pressurised dampers\u003c\/h3\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eBearing mounted upper spring platform\u003c\/h3\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking’ down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62759854965066,"sku":"BC-0023512","price":1239.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-rm-series-coilovers-bmw-1-e81-e87-04-13-399_a815b8f6-c4ca-4a7f-b840-e421e0858da4.webp?v=1784424987"},{"product_id":"bc-racing-rm-series-coilovers-bmw-1-series-e81-e87-04-12","title":"BC Racing RM-Series Coilovers BMW 1-Series E81 E87 04-12","description":"\u003cul\u003e \u003cli\u003eInverted monotube damper bodies\u003c\/li\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eInverted damper\u003c\/h3\u003e \u003cp\u003eThe BC Racing RM series feature high quality damping adjustable monotube inverted dampers at the front or front and rear, depending on vehicle. The RM coilovers offer the majority of the features of the BR series but with the additional benefit of the inverted damper unit. Inverting the damper unit brings with it a number of advantages.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced unsprung weight\u003c\/h3\u003e \u003cp\u003eUnsprung weight is reduced by moving the oil and gas reservoir way from the hub and attaching it to the shell. Unsprung weight is vital to a cars performance as a lighter wheel and hub assembly which readily moves in response to road bumps will have more grip when tracking over an imperfect road. A high unsprung weight can lead to wheel hop over bumpy ground and will reduce the quality of the ride and also untlimate handling as anything that impairs the suspension ability to maintain contact between road and tyre will be of detriment to the cars performance.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced heat transfer to the gas and oil reservoir\u003c\/h3\u003e \u003cp\u003eAny hard driven car with generate a lot of heat within its braking system. This heat is conducted through the hub to the damper unit. By inverting the oil and gas reservoir the oil and gas is moved away from the hub assembly . This reduces the amount of conducted heat being transferred from the braking system to the hub then to the damper and then on to the gas and oil. As the oil and gas is heated its properties change which has a knock on effect on the damping characteristics of the suspension. By keeping the gas and oil temperatures down BC Racing RM coilovers keep damping rates more consistant resulting in better performing suspension and ultimately allowing you to corner faster, which is the bottom line.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced flex\u003c\/h3\u003e \u003cp\u003eThe large 42mm damper rod and inverted design gives the inverted damper units much greater strength and resistance to side loadings. By reducing flex the RM inverted units lead to more consistant steering geometry resulting in more predicatable and responsive handling.\u003c\/p\u003e \u003ch3\u003eCorner weight adjustment\u003c\/h3\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRide height adjustment\u003c\/h3\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eDamping adjustment\u003c\/h3\u003e \u003cp\u003eThe RM Series coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003ePillowball (rose joint) upper mount\u003c\/h3\u003e \u003cp\u003eMany of the BC Racing RM coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCamber adjustment\u003c\/h3\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCorrosion protection\u003c\/h3\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eHigh quality coil springs\u003c\/h3\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePatented concave lower locking collar\u003c\/h3\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality oil\u003c\/h3\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn’t degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eNitrogen pressurised dampers\u003c\/h3\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eBearing mounted upper spring platform\u003c\/h3\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking’ down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62759854997834,"sku":"BC-0030617","price":1239.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-rm-series-coilovers-bmw-1-e81-e87-04-12-240_0ed0e875-8d5c-44c1-ac9e-378338e58def.webp?v=1784424987"},{"product_id":"bc-racing-er-series-coilovers-bmw-1-series-e81-e87-04-13","title":"BC Racing ER-Series Coilovers BMW 1-Series E81 E87 04-13","description":"\u003cdiv class=\"bc-coilover-Info\"\u003e \u003cp\u003eOur External reservoir ER Series comes with separate compression and rebound damping adjustment. The ER Series coilovers bring with them the high quality and unique features seen on the BR and RM type but have the additional benefit of external reservoirs and the ability to allow the end user to individually adjust and set compression and rebound damping rates.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eExternal reservoir\u003c\/h3\u003e \u003cp\u003eThe external reservoir ER Series coilovers allow BC Racing to increase the oil capacity of the damper unit. The additional oil capacity reduces peak oil temperatures which decreases variations in damping rates due to oil viscosity changes. The reduction in damping rate variations improves handling and ultimate on road and track performance.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"bc-coilover-Info\"\u003e \u003ch3\u003eSeparate compression and rebound damping adjustment\u003c\/h3\u003e \u003cp\u003eBy separating the adjustment for damping compression and rebound the ER Series allows you to dial the vehicle in to your exact needs. When braking hard whilst approaching a corner you want the car to transfer weight to the front tyres to maximise grip for the braking effort and also to allow you to trail brake into the corner without the car understeering.\u003c\/p\u003e \u003cp\u003eAs you start to lift off the brakes on corner entry you don't want the suspension to snap back up too quickly as this will remove the loading from the front tyres too quickly and lead to understeer. As soon as the car starts to understeer you need to wind off the steering lock to reduce the work effort applied to the tyres to allow them to regain traction. This slows the vehicles ultimate speed.\u003c\/p\u003e \u003cp\u003eThe compression damping adjustment allows you to fine tune the way the car rolls onto its front tyres during braking and the separate rebound adjustment allows you to fine tune the way the car responds as you come off the brakes to enter the corner proper and keep the front end hooked up. This allows you to get back on the power sooner and maximise corner exit speed. Corner exit speed is vital because this determines you maximum speed achieved down the next straight.\u003c\/p\u003e \u003ch3\u003eCorner weight adjustment\u003c\/h3\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRide height adjustment\u003c\/h3\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePillowball (rose joint) upper mount\u003c\/h3\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCamber adjustment\u003c\/h3\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCorrosion protection\u003c\/h3\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality coil springs\u003c\/h3\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePatented concave lower locking collar\u003c\/h3\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality oil\u003c\/h3\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eNitrogen pressurised dampers\u003c\/h3\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eBearing mounted upper spring platform\u003c\/h3\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e \u003c\/div\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62759855030602,"sku":"BC-0040530","price":1749.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-er-series-coilovers-bmw-1-e81-e87-04-13-133_85a195de-4219-4ac1-8923-20764ce26dc1.webp?v=1784424989"},{"product_id":"bc-racing-br-series-coilovers-bmw-1-series-e81-e87-04-12","title":"BC Racing BR-Series Coilovers BMW 1-Series E81 E87 04-12","description":"\u003cp\u003eThe BR series coilovers use a large 46mm diameter piston in a 53mm diameter damper body to maximise oil capacity.\u003c\/p\u003e \u003cp\u003eAs the damper unit operates the oil contained within heats up. The viscosity of oil changes as its temperature varies which can lead to changes in the damping characteristic of the unit.\u003c\/p\u003e \u003cp\u003eBC Racing only use a very high quality oil with their coilovers but go that extra mile to maximise performance and build their BR range with a large 53mm diameter damper body. This increases the capacity of the unit which increases the volume of oil contained which in turn reduces the peak temperature and so significantly improves damper performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCorner weight adjustment\u003c\/h2\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eRide height adjustment\u003c\/h2\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eDamping adjustment\u003c\/h2\u003e \u003cp\u003eBR coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePillowball (rose joint) upper mount\u003c\/h2\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCamber adjustment\u003c\/h2\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCorrosion protection\u003c\/h2\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality coil springs\u003c\/h2\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePatented concave lower locking collar\u003c\/h2\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality oil\u003c\/h2\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eNitrogen pressurised dampers\u003c\/h2\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eBearing mounted upper spring platform\u003c\/h2\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62759855063370,"sku":"BC-0030616","price":1049.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-br-series-coilovers-bmw-1-e81-e87-04-12-531_d349eb1b-68cf-48d2-8bab-fa25dfb1f590.webp?v=1784424988"},{"product_id":"bc-racing-er-series-coilovers-bmw-1-series-f20-11-5-bolt","title":"BC Racing ER-Series Coilovers BMW 1-Series F20 11+ - 5 Bolt","description":"\u003cdiv class=\"bc-coilover-Info\"\u003e \u003cp\u003eOur External reservoir ER Series comes with separate compression and rebound damping adjustment. The ER Series coilovers bring with them the high quality and unique features seen on the BR and RM type but have the additional benefit of external reservoirs and the ability to allow the end user to individually adjust and set compression and rebound damping rates.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eExternal reservoir\u003c\/h3\u003e \u003cp\u003eThe external reservoir ER Series coilovers allow BC Racing to increase the oil capacity of the damper unit. The additional oil capacity reduces peak oil temperatures which decreases variations in damping rates due to oil viscosity changes. The reduction in damping rate variations improves handling and ultimate on road and track performance.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"bc-coilover-Info\"\u003e \u003ch3\u003eSeparate compression and rebound damping adjustment\u003c\/h3\u003e \u003cp\u003eBy separating the adjustment for damping compression and rebound the ER Series allows you to dial the vehicle in to your exact needs. When braking hard whilst approaching a corner you want the car to transfer weight to the front tyres to maximise grip for the braking effort and also to allow you to trail brake into the corner without the car understeering.\u003c\/p\u003e \u003cp\u003eAs you start to lift off the brakes on corner entry you don't want the suspension to snap back up too quickly as this will remove the loading from the front tyres too quickly and lead to understeer. As soon as the car starts to understeer you need to wind off the steering lock to reduce the work effort applied to the tyres to allow them to regain traction. This slows the vehicles ultimate speed.\u003c\/p\u003e \u003cp\u003eThe compression damping adjustment allows you to fine tune the way the car rolls onto its front tyres during braking and the separate rebound adjustment allows you to fine tune the way the car responds as you come off the brakes to enter the corner proper and keep the front end hooked up. This allows you to get back on the power sooner and maximise corner exit speed. Corner exit speed is vital because this determines you maximum speed achieved down the next straight.\u003c\/p\u003e \u003ch3\u003eCorner weight adjustment\u003c\/h3\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRide height adjustment\u003c\/h3\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePillowball (rose joint) upper mount\u003c\/h3\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCamber adjustment\u003c\/h3\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCorrosion protection\u003c\/h3\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality coil springs\u003c\/h3\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePatented concave lower locking collar\u003c\/h3\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality oil\u003c\/h3\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eNitrogen pressurised dampers\u003c\/h3\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eBearing mounted upper spring platform\u003c\/h3\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e \u003c\/div\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62759862337866,"sku":"BC-ER-I-81","price":1749.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-er-series-coilovers-bmw-1-f20-11-5-bolt-265_a1f64150-9632-4be7-8a24-64507c0dcfe0.webp?v=1784425082"},{"product_id":"bc-racing-rm-series-coilovers-bmw-1-series-f20-11-3-bolt","title":"BC Racing RM-Series Coilovers BMW 1-Series F20 11+ - 3 Bolt","description":"\u003cul\u003e \u003cli\u003eInverted monotube damper bodies\u003c\/li\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eInverted damper\u003c\/h3\u003e \u003cp\u003eThe BC Racing RM series feature high quality damping adjustable monotube inverted dampers at the front or front and rear, depending on vehicle. The RM coilovers offer the majority of the features of the BR series but with the additional benefit of the inverted damper unit. Inverting the damper unit brings with it a number of advantages.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced unsprung weight\u003c\/h3\u003e \u003cp\u003eUnsprung weight is reduced by moving the oil and gas reservoir way from the hub and attaching it to the shell. Unsprung weight is vital to a cars performance as a lighter wheel and hub assembly which readily moves in response to road bumps will have more grip when tracking over an imperfect road. A high unsprung weight can lead to wheel hop over bumpy ground and will reduce the quality of the ride and also untlimate handling as anything that impairs the suspension ability to maintain contact between road and tyre will be of detriment to the cars performance.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced heat transfer to the gas and oil reservoir\u003c\/h3\u003e \u003cp\u003eAny hard driven car with generate a lot of heat within its braking system. This heat is conducted through the hub to the damper unit. By inverting the oil and gas reservoir the oil and gas is moved away from the hub assembly . This reduces the amount of conducted heat being transferred from the braking system to the hub then to the damper and then on to the gas and oil. As the oil and gas is heated its properties change which has a knock on effect on the damping characteristics of the suspension. By keeping the gas and oil temperatures down BC Racing RM coilovers keep damping rates more consistant resulting in better performing suspension and ultimately allowing you to corner faster, which is the bottom line.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced flex\u003c\/h3\u003e \u003cp\u003eThe large 42mm damper rod and inverted design gives the inverted damper units much greater strength and resistance to side loadings. By reducing flex the RM inverted units lead to more consistant steering geometry resulting in more predicatable and responsive handling.\u003c\/p\u003e \u003ch3\u003eCorner weight adjustment\u003c\/h3\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRide height adjustment\u003c\/h3\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eDamping adjustment\u003c\/h3\u003e \u003cp\u003eThe RM Series coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003ePillowball (rose joint) upper mount\u003c\/h3\u003e \u003cp\u003eMany of the BC Racing RM coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCamber adjustment\u003c\/h3\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCorrosion protection\u003c\/h3\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eHigh quality coil springs\u003c\/h3\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePatented concave lower locking collar\u003c\/h3\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality oil\u003c\/h3\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn’t degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eNitrogen pressurised dampers\u003c\/h3\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eBearing mounted upper spring platform\u003c\/h3\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking’ down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62759880556874,"sku":"BC-RM MA-I-37","price":1239.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-rm-series-coilovers-bmw-1-f20-11-3-bolt-215_3399be80-8d43-4ca2-b4b7-2cb1c761664f.webp?v=1784425352"},{"product_id":"bc-racing-er-series-coilovers-bmw-1-series-f20-11-3-bolt","title":"BC Racing ER-Series Coilovers BMW 1-Series F20 11+ - 3 Bolt","description":"\u003cdiv class=\"bc-coilover-Info\"\u003e \u003cp\u003eOur External reservoir ER Series comes with separate compression and rebound damping adjustment. The ER Series coilovers bring with them the high quality and unique features seen on the BR and RM type but have the additional benefit of external reservoirs and the ability to allow the end user to individually adjust and set compression and rebound damping rates.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eExternal reservoir\u003c\/h3\u003e \u003cp\u003eThe external reservoir ER Series coilovers allow BC Racing to increase the oil capacity of the damper unit. The additional oil capacity reduces peak oil temperatures which decreases variations in damping rates due to oil viscosity changes. The reduction in damping rate variations improves handling and ultimate on road and track performance.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"bc-coilover-Info\"\u003e \u003ch3\u003eSeparate compression and rebound damping adjustment\u003c\/h3\u003e \u003cp\u003eBy separating the adjustment for damping compression and rebound the ER Series allows you to dial the vehicle in to your exact needs. When braking hard whilst approaching a corner you want the car to transfer weight to the front tyres to maximise grip for the braking effort and also to allow you to trail brake into the corner without the car understeering.\u003c\/p\u003e \u003cp\u003eAs you start to lift off the brakes on corner entry you don't want the suspension to snap back up too quickly as this will remove the loading from the front tyres too quickly and lead to understeer. As soon as the car starts to understeer you need to wind off the steering lock to reduce the work effort applied to the tyres to allow them to regain traction. This slows the vehicles ultimate speed.\u003c\/p\u003e \u003cp\u003eThe compression damping adjustment allows you to fine tune the way the car rolls onto its front tyres during braking and the separate rebound adjustment allows you to fine tune the way the car responds as you come off the brakes to enter the corner proper and keep the front end hooked up. This allows you to get back on the power sooner and maximise corner exit speed. Corner exit speed is vital because this determines you maximum speed achieved down the next straight.\u003c\/p\u003e \u003ch3\u003eCorner weight adjustment\u003c\/h3\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRide height adjustment\u003c\/h3\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePillowball (rose joint) upper mount\u003c\/h3\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCamber adjustment\u003c\/h3\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCorrosion protection\u003c\/h3\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality coil springs\u003c\/h3\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePatented concave lower locking collar\u003c\/h3\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality oil\u003c\/h3\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eNitrogen pressurised dampers\u003c\/h3\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eBearing mounted upper spring platform\u003c\/h3\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e \u003c\/div\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62759880589642,"sku":"BC-ER-I-37","price":1749.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-er-series-coilovers-bmw-1-f20-11-3-bolt-231_f2775d4d-43d9-4b42-a239-7ac637bfc3c0.webp?v=1784425353"},{"product_id":"bc-racing-br-series-coilovers-bmw-1-series-f20-11-5-bolt","title":"BC Racing BR-Series Coilovers BMW 1-Series F20 11+ - 5 Bolt","description":"\u003cp\u003eThe BR series coilovers use a large 46mm diameter piston in a 53mm diameter damper body to maximise oil capacity.\u003c\/p\u003e \u003cp\u003eAs the damper unit operates the oil contained within heats up. The viscosity of oil changes as its temperature varies which can lead to changes in the damping characteristic of the unit.\u003c\/p\u003e \u003cp\u003eBC Racing only use a very high quality oil with their coilovers but go that extra mile to maximise performance and build their BR range with a large 53mm diameter damper body. This increases the capacity of the unit which increases the volume of oil contained which in turn reduces the peak temperature and so significantly improves damper performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCorner weight adjustment\u003c\/h2\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eRide height adjustment\u003c\/h2\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eDamping adjustment\u003c\/h2\u003e \u003cp\u003eBR coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePillowball (rose joint) upper mount\u003c\/h2\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCamber adjustment\u003c\/h2\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCorrosion protection\u003c\/h2\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality coil springs\u003c\/h2\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePatented concave lower locking collar\u003c\/h2\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality oil\u003c\/h2\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eNitrogen pressurised dampers\u003c\/h2\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eBearing mounted upper spring platform\u003c\/h2\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62759880622410,"sku":"BC-0022999","price":1099.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-br-series-coilovers-bmw-1-f20-11-5-bolt-937_fd2a41fe-9001-46d7-9d0f-7671a02a86d9.webp?v=1784425353"},{"product_id":"bc-racing-br-series-coilovers-bmw-1-series-f20-11-3-bolt","title":"BC Racing BR-Series Coilovers BMW 1-Series F20 11+ - 3 Bolt","description":"\u003cp\u003eThe BR series coilovers use a large 46mm diameter piston in a 53mm diameter damper body to maximise oil capacity.\u003c\/p\u003e \u003cp\u003eAs the damper unit operates the oil contained within heats up. The viscosity of oil changes as its temperature varies which can lead to changes in the damping characteristic of the unit.\u003c\/p\u003e \u003cp\u003eBC Racing only use a very high quality oil with their coilovers but go that extra mile to maximise performance and build their BR range with a large 53mm diameter damper body. This increases the capacity of the unit which increases the volume of oil contained which in turn reduces the peak temperature and so significantly improves damper performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCorner weight adjustment\u003c\/h2\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eRide height adjustment\u003c\/h2\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eDamping adjustment\u003c\/h2\u003e \u003cp\u003eBR coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePillowball (rose joint) upper mount\u003c\/h2\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCamber adjustment\u003c\/h2\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCorrosion protection\u003c\/h2\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality coil springs\u003c\/h2\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePatented concave lower locking collar\u003c\/h2\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality oil\u003c\/h2\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eNitrogen pressurised dampers\u003c\/h2\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eBearing mounted upper spring platform\u003c\/h2\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62759880655178,"sku":"BC-0008610","price":1099.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-br-series-coilovers-bmw-1-f20-11-3-bolt-546_3fcf7cdc-14b2-4bd9-8e0c-bf68ed142b28.webp?v=1784425353"},{"product_id":"bc-racing-br-series-coilovers-bmw-2-series-f22-14-m235i-3-bolt","title":"BC Racing BR-Series Coilovers BMW 2-Series F22 14+ - M235i 3 Bolt","description":"\u003cp\u003eThe BR series coilovers use a large 46mm diameter piston in a 53mm diameter damper body to maximise oil capacity.\u003c\/p\u003e \u003cp\u003eAs the damper unit operates the oil contained within heats up. The viscosity of oil changes as its temperature varies which can lead to changes in the damping characteristic of the unit.\u003c\/p\u003e \u003cp\u003eBC Racing only use a very high quality oil with their coilovers but go that extra mile to maximise performance and build their BR range with a large 53mm diameter damper body. This increases the capacity of the unit which increases the volume of oil contained which in turn reduces the peak temperature and so significantly improves damper performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCorner weight adjustment\u003c\/h2\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eRide height adjustment\u003c\/h2\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eDamping adjustment\u003c\/h2\u003e \u003cp\u003eBR coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePillowball (rose joint) upper mount\u003c\/h2\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCamber adjustment\u003c\/h2\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCorrosion protection\u003c\/h2\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality coil springs\u003c\/h2\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePatented concave lower locking collar\u003c\/h2\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality oil\u003c\/h2\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eNitrogen pressurised dampers\u003c\/h2\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eBearing mounted upper spring platform\u003c\/h2\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62759928561994,"sku":"BC-0027213","price":1099.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-br-series-coilovers-bmw-2-f22-14-m235i-3-bolt-670_06713d31-e5eb-434f-9dbb-c1f5cf753261.webp?v=1784425847"},{"product_id":"bc-racing-br-series-coilovers-bmw-2-series-f22-14-m235i-5-bolt","title":"BC Racing BR-Series Coilovers BMW 2-Series F22 14+ - M235i 5 Bolt","description":"\u003cp\u003eThe BR series coilovers use a large 46mm diameter piston in a 53mm diameter damper body to maximise oil capacity.\u003c\/p\u003e \u003cp\u003eAs the damper unit operates the oil contained within heats up. The viscosity of oil changes as its temperature varies which can lead to changes in the damping characteristic of the unit.\u003c\/p\u003e \u003cp\u003eBC Racing only use a very high quality oil with their coilovers but go that extra mile to maximise performance and build their BR range with a large 53mm diameter damper body. This increases the capacity of the unit which increases the volume of oil contained which in turn reduces the peak temperature and so significantly improves damper performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCorner weight adjustment\u003c\/h2\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eRide height adjustment\u003c\/h2\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eDamping adjustment\u003c\/h2\u003e \u003cp\u003eBR coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePillowball (rose joint) upper mount\u003c\/h2\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCamber adjustment\u003c\/h2\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCorrosion protection\u003c\/h2\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality coil springs\u003c\/h2\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePatented concave lower locking collar\u003c\/h2\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality oil\u003c\/h2\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eNitrogen pressurised dampers\u003c\/h2\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eBearing mounted upper spring platform\u003c\/h2\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62759947469130,"sku":"BC-0032272","price":1099.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-br-series-coilovers-bmw-2-f22-14-m235i-5-bolt-242_53137e04-14bb-4e6f-bc4d-79d0172aee91.webp?v=1784425997"},{"product_id":"bc-racing-zr-series-coilovers-bmw-3-series-e36-92-98-saloon","title":"BC Racing ZR-Series Coilovers BMW 3-Series E36 92-98 - Saloon","description":"\u003cdiv class=\"bc-coilover-Info\"\u003e \u003cp\u003eBC Racing's new ZR Series Coilovers bring a 3-way adjustable track ready coilover system to racers from novice to pro for a price not seen before in the performance suspension market. Each ZR Series Coilover system offers independent low speed and high speed compression adjustment and separate rebound adjustment. They also offer full height adjustability independent of piston travel and spring preload.\u003c\/p\u003e \u003cp\u003eOn cars with McPherson struts the ZR Series comes standard with an inverted monotube damper with the steel braided Teflon coated line exiting the top of the damper to the external reservoirs that can be remotely mounted in the engine bay or boot. The ZR Series kits offer 30 clicks of rebound adjustment, 15 clicks of low speed compression adjustment, and 12 clicks of high speed compression.\u003c\/p\u003e \u003ch3\u003eExternal reservoir\u003c\/h3\u003e \u003cp\u003e* 3-way adjustable damping controls \u003c\/p\u003e \u003cp\u003e* Engineered for 100% track use \u003c\/p\u003e \u003cp\u003e* Inverted damper design. (depending on models) \u003c\/p\u003e \u003cp\u003e* Dual Piston design. (1 in res., 1 in shock) \u003c\/p\u003e \u003cp\u003e* Teflon coated steel braided lines for external reservoir on inverted dampers and solid stem for double A-arm cars \u003c\/p\u003e \u003cp\u003e* Custom spring rates available \u003c\/p\u003e \u003cp\u003e* Completely rebuildable\u003c\/p\u003e \u003cp\u003e* Monotube damper design\u003c\/p\u003e \u003cp\u003e* Patented concave lower locking collar\u003c\/p\u003e \u003cul\u003e \u003cli\u003e1 year manufacturer warranty\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eCorner weight adjustment\u003c\/h3\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRide height adjustment\u003c\/h3\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePillowball (rose joint) upper mount\u003c\/h3\u003e \u003cp\u003eMany of the BC Racing ZR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCamber adjustment\u003c\/h3\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCorrosion protection\u003c\/h3\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality coil springs\u003c\/h3\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePatented concave lower locking collar\u003c\/h3\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality oil\u003c\/h3\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eNitrogen pressurised dampers\u003c\/h3\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eBearing mounted upper spring platform\u003c\/h3\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e \u003c\/div\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763192811850,"sku":"BC-0009256","price":2159.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-zr-series-coilovers-bmw-3-e36-92-98-saloon-881.webp?v=1784490515"},{"product_id":"bc-racing-rm-series-coilovers-bmw-3-series-e36-92-98-saloon","title":"BC Racing RM-Series Coilovers BMW 3-Series E36 92-98 - Saloon","description":"\u003cul\u003e \u003cli\u003eInverted monotube damper bodies\u003c\/li\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eInverted damper\u003c\/h3\u003e \u003cp\u003eThe BC Racing RM series feature high quality damping adjustable monotube inverted dampers at the front or front and rear, depending on vehicle. The RM coilovers offer the majority of the features of the BR series but with the additional benefit of the inverted damper unit. Inverting the damper unit brings with it a number of advantages.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced unsprung weight\u003c\/h3\u003e \u003cp\u003eUnsprung weight is reduced by moving the oil and gas reservoir way from the hub and attaching it to the shell. Unsprung weight is vital to a cars performance as a lighter wheel and hub assembly which readily moves in response to road bumps will have more grip when tracking over an imperfect road. A high unsprung weight can lead to wheel hop over bumpy ground and will reduce the quality of the ride and also untlimate handling as anything that impairs the suspension ability to maintain contact between road and tyre will be of detriment to the cars performance.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced heat transfer to the gas and oil reservoir\u003c\/h3\u003e \u003cp\u003eAny hard driven car with generate a lot of heat within its braking system. This heat is conducted through the hub to the damper unit. By inverting the oil and gas reservoir the oil and gas is moved away from the hub assembly . This reduces the amount of conducted heat being transferred from the braking system to the hub then to the damper and then on to the gas and oil. As the oil and gas is heated its properties change which has a knock on effect on the damping characteristics of the suspension. By keeping the gas and oil temperatures down BC Racing RM coilovers keep damping rates more consistant resulting in better performing suspension and ultimately allowing you to corner faster, which is the bottom line.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced flex\u003c\/h3\u003e \u003cp\u003eThe large 42mm damper rod and inverted design gives the inverted damper units much greater strength and resistance to side loadings. By reducing flex the RM inverted units lead to more consistant steering geometry resulting in more predicatable and responsive handling.\u003c\/p\u003e \u003ch3\u003eCorner weight adjustment\u003c\/h3\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRide height adjustment\u003c\/h3\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eDamping adjustment\u003c\/h3\u003e \u003cp\u003eThe RM Series coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003ePillowball (rose joint) upper mount\u003c\/h3\u003e \u003cp\u003eMany of the BC Racing RM coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCamber adjustment\u003c\/h3\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCorrosion protection\u003c\/h3\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eHigh quality coil springs\u003c\/h3\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePatented concave lower locking collar\u003c\/h3\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality oil\u003c\/h3\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn’t degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eNitrogen pressurised dampers\u003c\/h3\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eBearing mounted upper spring platform\u003c\/h3\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking’ down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763192844618,"sku":"BC-0009675","price":1365.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-rm-series-coilovers-bmw-3-e36-92-98-saloon-858.webp?v=1784490516"},{"product_id":"bc-racing-rm-series-coilovers-bmw-3-series-e36-94-00-compact","title":"BC Racing RM-Series Coilovers BMW 3-Series E36 94-00 - Compact","description":"\u003cul\u003e \u003cli\u003eInverted monotube damper bodies\u003c\/li\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eInverted damper\u003c\/h3\u003e \u003cp\u003eThe BC Racing RM series feature high quality damping adjustable monotube inverted dampers at the front or front and rear, depending on vehicle. The RM coilovers offer the majority of the features of the BR series but with the additional benefit of the inverted damper unit. Inverting the damper unit brings with it a number of advantages.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced unsprung weight\u003c\/h3\u003e \u003cp\u003eUnsprung weight is reduced by moving the oil and gas reservoir way from the hub and attaching it to the shell. Unsprung weight is vital to a cars performance as a lighter wheel and hub assembly which readily moves in response to road bumps will have more grip when tracking over an imperfect road. A high unsprung weight can lead to wheel hop over bumpy ground and will reduce the quality of the ride and also untlimate handling as anything that impairs the suspension ability to maintain contact between road and tyre will be of detriment to the cars performance.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced heat transfer to the gas and oil reservoir\u003c\/h3\u003e \u003cp\u003eAny hard driven car with generate a lot of heat within its braking system. This heat is conducted through the hub to the damper unit. By inverting the oil and gas reservoir the oil and gas is moved away from the hub assembly . This reduces the amount of conducted heat being transferred from the braking system to the hub then to the damper and then on to the gas and oil. As the oil and gas is heated its properties change which has a knock on effect on the damping characteristics of the suspension. By keeping the gas and oil temperatures down BC Racing RM coilovers keep damping rates more consistant resulting in better performing suspension and ultimately allowing you to corner faster, which is the bottom line.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced flex\u003c\/h3\u003e \u003cp\u003eThe large 42mm damper rod and inverted design gives the inverted damper units much greater strength and resistance to side loadings. By reducing flex the RM inverted units lead to more consistant steering geometry resulting in more predicatable and responsive handling.\u003c\/p\u003e \u003ch3\u003eCorner weight adjustment\u003c\/h3\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRide height adjustment\u003c\/h3\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eDamping adjustment\u003c\/h3\u003e \u003cp\u003eThe RM Series coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003ePillowball (rose joint) upper mount\u003c\/h3\u003e \u003cp\u003eMany of the BC Racing RM coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCamber adjustment\u003c\/h3\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCorrosion protection\u003c\/h3\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eHigh quality coil springs\u003c\/h3\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePatented concave lower locking collar\u003c\/h3\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality oil\u003c\/h3\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn’t degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eNitrogen pressurised dampers\u003c\/h3\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eBearing mounted upper spring platform\u003c\/h3\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking’ down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763192877386,"sku":"BC-0004936","price":1239.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-rm-series-coilovers-bmw-3-e36-94-00-compact-454.webp?v=1784490517"},{"product_id":"bc-racing-hm-series-coilovers-bmw-3-series-e36-92-98-saloon","title":"BC Racing HM-Series Coilovers BMW 3-Series E36 92-98 - Saloon","description":"\u003cdiv class=\"bc-coilover-Info\"\u003e \u003cp\u003e* Engineered for 100% track use\u003c\/p\u003e \u003cp\u003e* 30 levels of separate rebound and compression adjustment\u003c\/p\u003e \u003cp\u003e* Inverted damper design (depending on models) \u003c\/p\u003e \u003cp\u003e* Dual Piston design (1 res., 1 in shock)\u003c\/p\u003e \u003cp\u003e * Teflon coated steel braided lines for external reservoir on inverted dampers and solid stem for double A-arm cars Custom spring rates available\u003c\/p\u003e \u003cp\u003e * Completely rebuild-able\u003c\/p\u003e \u003cp\u003e * Monotube damper design\u003c\/p\u003e \u003cp\u003e * Patented concave lower locking collar\u003c\/p\u003e \u003cp\u003e * 1 year manufacturer warranty \u003c\/p\u003e \u003cp\u003eBC Racing's HM Coilover system offers the same great benefits of the RM Series with the addition of 2 way damping adjustment. Each HM Coilover system features inverted mono-tube dampers with independently adjustable compression and rebound. The inverted damper design moves vital damper fluid away from detrimental heat sources to avoid overheating which can cause damper fade under extreme track use.\u003c\/p\u003e \u003cp\u003eThe inverted damper also allows for decreased unsprung weight by moving the majority of the coilover mass up to the chassis improving ride quality, wheel control and steering feel. With the combination of inverted mono-tube dampers and external reservoirs the HM Series is suited for the most demanding users on the track.\u003c\/p\u003e \u003ch3\u003eCorner weight adjustment\u003c\/h3\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRide height adjustment\u003c\/h3\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePillowball (rose joint) upper mount\u003c\/h3\u003e \u003cp\u003eMany of the BC Racing HM coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCamber adjustment\u003c\/h3\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCorrosion protection\u003c\/h3\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality coil springs\u003c\/h3\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePatented concave lower locking collar\u003c\/h3\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality oil\u003c\/h3\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eNitrogen pressurised dampers\u003c\/h3\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eBearing mounted upper spring platform\u003c\/h3\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e \u003c\/div\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763192910154,"sku":"BC-HM-I-01","price":2159.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-hm-series-coilovers-bmw-3-e36-92-98-saloon-654.webp?v=1784490518"},{"product_id":"bc-racing-er-series-coilovers-bmw-3-series-e36-92-98-saloon","title":"BC Racing ER-Series Coilovers BMW 3-Series E36 92-98 - Saloon","description":"\u003cdiv class=\"bc-coilover-Info\"\u003e \u003cp\u003eOur External reservoir ER Series comes with separate compression and rebound damping adjustment. The ER Series coilovers bring with them the high quality and unique features seen on the BR and RM type but have the additional benefit of external reservoirs and the ability to allow the end user to individually adjust and set compression and rebound damping rates.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eExternal reservoir\u003c\/h3\u003e \u003cp\u003eThe external reservoir ER Series coilovers allow BC Racing to increase the oil capacity of the damper unit. The additional oil capacity reduces peak oil temperatures which decreases variations in damping rates due to oil viscosity changes. The reduction in damping rate variations improves handling and ultimate on road and track performance.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"bc-coilover-Info\"\u003e \u003ch3\u003eSeparate compression and rebound damping adjustment\u003c\/h3\u003e \u003cp\u003eBy separating the adjustment for damping compression and rebound the ER Series allows you to dial the vehicle in to your exact needs. When braking hard whilst approaching a corner you want the car to transfer weight to the front tyres to maximise grip for the braking effort and also to allow you to trail brake into the corner without the car understeering.\u003c\/p\u003e \u003cp\u003eAs you start to lift off the brakes on corner entry you don't want the suspension to snap back up too quickly as this will remove the loading from the front tyres too quickly and lead to understeer. As soon as the car starts to understeer you need to wind off the steering lock to reduce the work effort applied to the tyres to allow them to regain traction. This slows the vehicles ultimate speed.\u003c\/p\u003e \u003cp\u003eThe compression damping adjustment allows you to fine tune the way the car rolls onto its front tyres during braking and the separate rebound adjustment allows you to fine tune the way the car responds as you come off the brakes to enter the corner proper and keep the front end hooked up. This allows you to get back on the power sooner and maximise corner exit speed. Corner exit speed is vital because this determines you maximum speed achieved down the next straight.\u003c\/p\u003e \u003ch3\u003eCorner weight adjustment\u003c\/h3\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRide height adjustment\u003c\/h3\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePillowball (rose joint) upper mount\u003c\/h3\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCamber adjustment\u003c\/h3\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCorrosion protection\u003c\/h3\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality coil springs\u003c\/h3\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePatented concave lower locking collar\u003c\/h3\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality oil\u003c\/h3\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eNitrogen pressurised dampers\u003c\/h3\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eBearing mounted upper spring platform\u003c\/h3\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e \u003c\/div\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763192975690,"sku":"BC-0032314","price":1849.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-er-series-coilovers-bmw-3-e36-92-98-saloon-646.webp?v=1784490518"},{"product_id":"bc-racing-br-series-coilovers-bmw-3-series-e36-92-98-saloon","title":"BC Racing BR-Series Coilovers BMW 3-Series E36 92-98 - Saloon","description":"\u003cp\u003eThe BR series coilovers use a large 46mm diameter piston in a 53mm diameter damper body to maximise oil capacity.\u003c\/p\u003e \u003cp\u003eAs the damper unit operates the oil contained within heats up. The viscosity of oil changes as its temperature varies which can lead to changes in the damping characteristic of the unit.\u003c\/p\u003e \u003cp\u003eBC Racing only use a very high quality oil with their coilovers but go that extra mile to maximise performance and build their BR range with a large 53mm diameter damper body. This increases the capacity of the unit which increases the volume of oil contained which in turn reduces the peak temperature and so significantly improves damper performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCorner weight adjustment\u003c\/h2\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eRide height adjustment\u003c\/h2\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eDamping adjustment\u003c\/h2\u003e \u003cp\u003eBR coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePillowball (rose joint) upper mount\u003c\/h2\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCamber adjustment\u003c\/h2\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCorrosion protection\u003c\/h2\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality coil springs\u003c\/h2\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePatented concave lower locking collar\u003c\/h2\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality oil\u003c\/h2\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eNitrogen pressurised dampers\u003c\/h2\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eBearing mounted upper spring platform\u003c\/h2\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763193008458,"sku":"BC-0003283","price":1049.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-br-series-coilovers-bmw-3-e36-92-98-saloon-244.webp?v=1784490519"},{"product_id":"bc-racing-br-series-coilovers-bmw-3-series-e36-94-00-compact","title":"BC Racing BR-Series Coilovers BMW 3-Series E36 94-00 - Compact","description":"\u003cp\u003eThe BR series coilovers use a large 46mm diameter piston in a 53mm diameter damper body to maximise oil capacity.\u003c\/p\u003e \u003cp\u003eAs the damper unit operates the oil contained within heats up. The viscosity of oil changes as its temperature varies which can lead to changes in the damping characteristic of the unit.\u003c\/p\u003e \u003cp\u003eBC Racing only use a very high quality oil with their coilovers but go that extra mile to maximise performance and build their BR range with a large 53mm diameter damper body. This increases the capacity of the unit which increases the volume of oil contained which in turn reduces the peak temperature and so significantly improves damper performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCorner weight adjustment\u003c\/h2\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eRide height adjustment\u003c\/h2\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eDamping adjustment\u003c\/h2\u003e \u003cp\u003eBR coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePillowball (rose joint) upper mount\u003c\/h2\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCamber adjustment\u003c\/h2\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCorrosion protection\u003c\/h2\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality coil springs\u003c\/h2\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePatented concave lower locking collar\u003c\/h2\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality oil\u003c\/h2\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eNitrogen pressurised dampers\u003c\/h2\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eBearing mounted upper spring platform\u003c\/h2\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763196580170,"sku":"BC-0006690","price":1049.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-br-series-coilovers-bmw-3-e36-94-00-compact-435.webp?v=1784490524"},{"product_id":"bc-racing-zr-series-coilovers-bmw-3-series-e46-98-06-saloon","title":"BC Racing ZR-Series Coilovers BMW 3-Series E46 98-06 - Saloon","description":"\u003cdiv class=\"bc-coilover-Info\"\u003e \u003cp\u003eBC Racing's new ZR Series Coilovers bring a 3-way adjustable track ready coilover system to racers from novice to pro for a price not seen before in the performance suspension market. Each ZR Series Coilover system offers independent low speed and high speed compression adjustment and separate rebound adjustment. They also offer full height adjustability independent of piston travel and spring preload.\u003c\/p\u003e \u003cp\u003eOn cars with McPherson struts the ZR Series comes standard with an inverted monotube damper with the steel braided Teflon coated line exiting the top of the damper to the external reservoirs that can be remotely mounted in the engine bay or boot. The ZR Series kits offer 30 clicks of rebound adjustment, 15 clicks of low speed compression adjustment, and 12 clicks of high speed compression.\u003c\/p\u003e \u003ch3\u003eExternal reservoir\u003c\/h3\u003e \u003cp\u003e* 3-way adjustable damping controls \u003c\/p\u003e \u003cp\u003e* Engineered for 100% track use \u003c\/p\u003e \u003cp\u003e* Inverted damper design. (depending on models) \u003c\/p\u003e \u003cp\u003e* Dual Piston design. (1 in res., 1 in shock) \u003c\/p\u003e \u003cp\u003e* Teflon coated steel braided lines for external reservoir on inverted dampers and solid stem for double A-arm cars \u003c\/p\u003e \u003cp\u003e* Custom spring rates available \u003c\/p\u003e \u003cp\u003e* Completely rebuildable\u003c\/p\u003e \u003cp\u003e* Monotube damper design\u003c\/p\u003e \u003cp\u003e* Patented concave lower locking collar\u003c\/p\u003e \u003cul\u003e \u003cli\u003e1 year manufacturer warranty\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eCorner weight adjustment\u003c\/h3\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRide height adjustment\u003c\/h3\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePillowball (rose joint) upper mount\u003c\/h3\u003e \u003cp\u003eMany of the BC Racing ZR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCamber adjustment\u003c\/h3\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCorrosion protection\u003c\/h3\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality coil springs\u003c\/h3\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePatented concave lower locking collar\u003c\/h3\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality oil\u003c\/h3\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eNitrogen pressurised dampers\u003c\/h3\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eBearing mounted upper spring platform\u003c\/h3\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e \u003c\/div\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763431887178,"sku":"BC-0009257","price":2159.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-zr-series-coilovers-bmw-3-e46-98-06-saloon-980.webp?v=1784491231"},{"product_id":"bc-racing-rm-series-coilovers-bmw-z4-e85-02-08","title":"BC Racing RM-Series Coilovers BMW Z4 E85 02-08","description":"\u003cul\u003e \u003cli\u003eInverted monotube damper bodies\u003c\/li\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eInverted damper\u003c\/h3\u003e \u003cp\u003eThe BC Racing RM series feature high quality damping adjustable monotube inverted dampers at the front or front and rear, depending on vehicle. The RM coilovers offer the majority of the features of the BR series but with the additional benefit of the inverted damper unit. Inverting the damper unit brings with it a number of advantages.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced unsprung weight\u003c\/h3\u003e \u003cp\u003eUnsprung weight is reduced by moving the oil and gas reservoir way from the hub and attaching it to the shell. Unsprung weight is vital to a cars performance as a lighter wheel and hub assembly which readily moves in response to road bumps will have more grip when tracking over an imperfect road. A high unsprung weight can lead to wheel hop over bumpy ground and will reduce the quality of the ride and also untlimate handling as anything that impairs the suspension ability to maintain contact between road and tyre will be of detriment to the cars performance.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced heat transfer to the gas and oil reservoir\u003c\/h3\u003e \u003cp\u003eAny hard driven car with generate a lot of heat within its braking system. This heat is conducted through the hub to the damper unit. By inverting the oil and gas reservoir the oil and gas is moved away from the hub assembly . This reduces the amount of conducted heat being transferred from the braking system to the hub then to the damper and then on to the gas and oil. As the oil and gas is heated its properties change which has a knock on effect on the damping characteristics of the suspension. By keeping the gas and oil temperatures down BC Racing RM coilovers keep damping rates more consistant resulting in better performing suspension and ultimately allowing you to corner faster, which is the bottom line.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced flex\u003c\/h3\u003e \u003cp\u003eThe large 42mm damper rod and inverted design gives the inverted damper units much greater strength and resistance to side loadings. By reducing flex the RM inverted units lead to more consistant steering geometry resulting in more predicatable and responsive handling.\u003c\/p\u003e \u003ch3\u003eCorner weight adjustment\u003c\/h3\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRide height adjustment\u003c\/h3\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eDamping adjustment\u003c\/h3\u003e \u003cp\u003eThe RM Series coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003ePillowball (rose joint) upper mount\u003c\/h3\u003e \u003cp\u003eMany of the BC Racing RM coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCamber adjustment\u003c\/h3\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCorrosion protection\u003c\/h3\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eHigh quality coil springs\u003c\/h3\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePatented concave lower locking collar\u003c\/h3\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality oil\u003c\/h3\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn’t degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eNitrogen pressurised dampers\u003c\/h3\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eBearing mounted upper spring platform\u003c\/h3\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking’ down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763431952714,"sku":"BC-RM MA-I-12","price":1239.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-rm-series-coilovers-bmw-z4-e85-02-08-162.webp?v=1784491232"},{"product_id":"bc-racing-rm-series-coilovers-bmw-3-series-e46-98-06-saloon","title":"BC Racing RM-Series Coilovers BMW 3-Series E46 98-06 - Saloon","description":"\u003cul\u003e \u003cli\u003eInverted monotube damper bodies\u003c\/li\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eInverted damper\u003c\/h3\u003e \u003cp\u003eThe BC Racing RM series feature high quality damping adjustable monotube inverted dampers at the front or front and rear, depending on vehicle. The RM coilovers offer the majority of the features of the BR series but with the additional benefit of the inverted damper unit. Inverting the damper unit brings with it a number of advantages.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced unsprung weight\u003c\/h3\u003e \u003cp\u003eUnsprung weight is reduced by moving the oil and gas reservoir way from the hub and attaching it to the shell. Unsprung weight is vital to a cars performance as a lighter wheel and hub assembly which readily moves in response to road bumps will have more grip when tracking over an imperfect road. A high unsprung weight can lead to wheel hop over bumpy ground and will reduce the quality of the ride and also untlimate handling as anything that impairs the suspension ability to maintain contact between road and tyre will be of detriment to the cars performance.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced heat transfer to the gas and oil reservoir\u003c\/h3\u003e \u003cp\u003eAny hard driven car with generate a lot of heat within its braking system. This heat is conducted through the hub to the damper unit. By inverting the oil and gas reservoir the oil and gas is moved away from the hub assembly . This reduces the amount of conducted heat being transferred from the braking system to the hub then to the damper and then on to the gas and oil. As the oil and gas is heated its properties change which has a knock on effect on the damping characteristics of the suspension. By keeping the gas and oil temperatures down BC Racing RM coilovers keep damping rates more consistant resulting in better performing suspension and ultimately allowing you to corner faster, which is the bottom line.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced flex\u003c\/h3\u003e \u003cp\u003eThe large 42mm damper rod and inverted design gives the inverted damper units much greater strength and resistance to side loadings. By reducing flex the RM inverted units lead to more consistant steering geometry resulting in more predicatable and responsive handling.\u003c\/p\u003e \u003ch3\u003eCorner weight adjustment\u003c\/h3\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRide height adjustment\u003c\/h3\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eDamping adjustment\u003c\/h3\u003e \u003cp\u003eThe RM Series coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003ePillowball (rose joint) upper mount\u003c\/h3\u003e \u003cp\u003eMany of the BC Racing RM coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCamber adjustment\u003c\/h3\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCorrosion protection\u003c\/h3\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eHigh quality coil springs\u003c\/h3\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePatented concave lower locking collar\u003c\/h3\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality oil\u003c\/h3\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn’t degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eNitrogen pressurised dampers\u003c\/h3\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eBearing mounted upper spring platform\u003c\/h3\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking’ down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763432018250,"sku":"BC-0008654","price":1239.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-rm-series-coilovers-bmw-3-e46-98-06-saloon-625.webp?v=1784491232"},{"product_id":"bc-racing-hm-series-coilovers-bmw-3-series-e46-98-06-saloon","title":"BC Racing HM-Series Coilovers BMW 3-Series E46 98-06 - Saloon","description":"\u003cdiv class=\"bc-coilover-Info\"\u003e \u003cp\u003e* Engineered for 100% track use\u003c\/p\u003e \u003cp\u003e* 30 levels of separate rebound and compression adjustment\u003c\/p\u003e \u003cp\u003e* Inverted damper design (depending on models) \u003c\/p\u003e \u003cp\u003e* Dual Piston design (1 res., 1 in shock)\u003c\/p\u003e \u003cp\u003e * Teflon coated steel braided lines for external reservoir on inverted dampers and solid stem for double A-arm cars Custom spring rates available\u003c\/p\u003e \u003cp\u003e * Completely rebuild-able\u003c\/p\u003e \u003cp\u003e * Monotube damper design\u003c\/p\u003e \u003cp\u003e * Patented concave lower locking collar\u003c\/p\u003e \u003cp\u003e * 1 year manufacturer warranty \u003c\/p\u003e \u003cp\u003eBC Racing's HM Coilover system offers the same great benefits of the RM Series with the addition of 2 way damping adjustment. Each HM Coilover system features inverted mono-tube dampers with independently adjustable compression and rebound. The inverted damper design moves vital damper fluid away from detrimental heat sources to avoid overheating which can cause damper fade under extreme track use.\u003c\/p\u003e \u003cp\u003eThe inverted damper also allows for decreased unsprung weight by moving the majority of the coilover mass up to the chassis improving ride quality, wheel control and steering feel. With the combination of inverted mono-tube dampers and external reservoirs the HM Series is suited for the most demanding users on the track.\u003c\/p\u003e \u003ch3\u003eCorner weight adjustment\u003c\/h3\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRide height adjustment\u003c\/h3\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePillowball (rose joint) upper mount\u003c\/h3\u003e \u003cp\u003eMany of the BC Racing HM coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCamber adjustment\u003c\/h3\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCorrosion protection\u003c\/h3\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality coil springs\u003c\/h3\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePatented concave lower locking collar\u003c\/h3\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality oil\u003c\/h3\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eNitrogen pressurised dampers\u003c\/h3\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eBearing mounted upper spring platform\u003c\/h3\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e \u003c\/div\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763432083786,"sku":"BC-0032552","price":2059.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-hm-series-coilovers-bmw-3-e46-98-06-saloon-585.webp?v=1784491233"},{"product_id":"bc-racing-er-series-coilovers-bmw-3-series-e46-98-06-saloon","title":"BC Racing ER-Series Coilovers BMW 3-Series E46 98-06 - Saloon","description":"\u003cdiv class=\"bc-coilover-Info\"\u003e \u003cp\u003eOur External reservoir ER Series comes with separate compression and rebound damping adjustment. The ER Series coilovers bring with them the high quality and unique features seen on the BR and RM type but have the additional benefit of external reservoirs and the ability to allow the end user to individually adjust and set compression and rebound damping rates.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eExternal reservoir\u003c\/h3\u003e \u003cp\u003eThe external reservoir ER Series coilovers allow BC Racing to increase the oil capacity of the damper unit. The additional oil capacity reduces peak oil temperatures which decreases variations in damping rates due to oil viscosity changes. The reduction in damping rate variations improves handling and ultimate on road and track performance.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"bc-coilover-Info\"\u003e \u003ch3\u003eSeparate compression and rebound damping adjustment\u003c\/h3\u003e \u003cp\u003eBy separating the adjustment for damping compression and rebound the ER Series allows you to dial the vehicle in to your exact needs. When braking hard whilst approaching a corner you want the car to transfer weight to the front tyres to maximise grip for the braking effort and also to allow you to trail brake into the corner without the car understeering.\u003c\/p\u003e \u003cp\u003eAs you start to lift off the brakes on corner entry you don't want the suspension to snap back up too quickly as this will remove the loading from the front tyres too quickly and lead to understeer. As soon as the car starts to understeer you need to wind off the steering lock to reduce the work effort applied to the tyres to allow them to regain traction. This slows the vehicles ultimate speed.\u003c\/p\u003e \u003cp\u003eThe compression damping adjustment allows you to fine tune the way the car rolls onto its front tyres during braking and the separate rebound adjustment allows you to fine tune the way the car responds as you come off the brakes to enter the corner proper and keep the front end hooked up. This allows you to get back on the power sooner and maximise corner exit speed. Corner exit speed is vital because this determines you maximum speed achieved down the next straight.\u003c\/p\u003e \u003ch3\u003eCorner weight adjustment\u003c\/h3\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRide height adjustment\u003c\/h3\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePillowball (rose joint) upper mount\u003c\/h3\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCamber adjustment\u003c\/h3\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCorrosion protection\u003c\/h3\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality coil springs\u003c\/h3\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePatented concave lower locking collar\u003c\/h3\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality oil\u003c\/h3\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eNitrogen pressurised dampers\u003c\/h3\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eBearing mounted upper spring platform\u003c\/h3\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e \u003c\/div\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763432149322,"sku":"BC-0022284","price":1849.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-er-series-coilovers-bmw-3-e46-98-06-saloon-988.webp?v=1784491234"},{"product_id":"bc-racing-br-series-coilovers-bmw-z4-e85-02-08","title":"BC Racing BR-Series Coilovers BMW Z4 E85 02-08","description":"\u003cp\u003eThe BR series coilovers use a large 46mm diameter piston in a 53mm diameter damper body to maximise oil capacity.\u003c\/p\u003e \u003cp\u003eAs the damper unit operates the oil contained within heats up. The viscosity of oil changes as its temperature varies which can lead to changes in the damping characteristic of the unit.\u003c\/p\u003e \u003cp\u003eBC Racing only use a very high quality oil with their coilovers but go that extra mile to maximise performance and build their BR range with a large 53mm diameter damper body. This increases the capacity of the unit which increases the volume of oil contained which in turn reduces the peak temperature and so significantly improves damper performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCorner weight adjustment\u003c\/h2\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eRide height adjustment\u003c\/h2\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eDamping adjustment\u003c\/h2\u003e \u003cp\u003eBR coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePillowball (rose joint) upper mount\u003c\/h2\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCamber adjustment\u003c\/h2\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCorrosion protection\u003c\/h2\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality coil springs\u003c\/h2\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePatented concave lower locking collar\u003c\/h2\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality oil\u003c\/h2\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eNitrogen pressurised dampers\u003c\/h2\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eBearing mounted upper spring platform\u003c\/h2\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763432247626,"sku":"BC-0027154","price":1049.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-br-series-coilovers-bmw-z4-e85-02-08-237.webp?v=1784491235"},{"product_id":"bc-racing-br-series-coilovers-bmw-3-series-e46-98-06-saloon","title":"BC Racing BR-Series Coilovers BMW 3-Series E46 98-06 - Saloon","description":"\u003cp\u003eThe BR series coilovers use a large 46mm diameter piston in a 53mm diameter damper body to maximise oil capacity.\u003c\/p\u003e \u003cp\u003eAs the damper unit operates the oil contained within heats up. The viscosity of oil changes as its temperature varies which can lead to changes in the damping characteristic of the unit.\u003c\/p\u003e \u003cp\u003eBC Racing only use a very high quality oil with their coilovers but go that extra mile to maximise performance and build their BR range with a large 53mm diameter damper body. This increases the capacity of the unit which increases the volume of oil contained which in turn reduces the peak temperature and so significantly improves damper performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCorner weight adjustment\u003c\/h2\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eRide height adjustment\u003c\/h2\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eDamping adjustment\u003c\/h2\u003e \u003cp\u003eBR coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePillowball (rose joint) upper mount\u003c\/h2\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCamber adjustment\u003c\/h2\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCorrosion protection\u003c\/h2\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality coil springs\u003c\/h2\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePatented concave lower locking collar\u003c\/h2\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality oil\u003c\/h2\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eNitrogen pressurised dampers\u003c\/h2\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eBearing mounted upper spring platform\u003c\/h2\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763432313162,"sku":"BC-0008359","price":1049.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-br-series-coilovers-bmw-3-e46-98-06-saloon-530.webp?v=1784491236"},{"product_id":"bc-racing-rm-series-coilovers-bmw-3-series-f30-f31-12-3-bolt","title":"BC Racing RM-Series Coilovers BMW 3-Series F30 F31 12+ - 3 Bolt","description":"\u003cul\u003e \u003cli\u003eInverted monotube damper bodies\u003c\/li\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eInverted damper\u003c\/h3\u003e \u003cp\u003eThe BC Racing RM series feature high quality damping adjustable monotube inverted dampers at the front or front and rear, depending on vehicle. The RM coilovers offer the majority of the features of the BR series but with the additional benefit of the inverted damper unit. Inverting the damper unit brings with it a number of advantages.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced unsprung weight\u003c\/h3\u003e \u003cp\u003eUnsprung weight is reduced by moving the oil and gas reservoir way from the hub and attaching it to the shell. Unsprung weight is vital to a cars performance as a lighter wheel and hub assembly which readily moves in response to road bumps will have more grip when tracking over an imperfect road. A high unsprung weight can lead to wheel hop over bumpy ground and will reduce the quality of the ride and also untlimate handling as anything that impairs the suspension ability to maintain contact between road and tyre will be of detriment to the cars performance.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced heat transfer to the gas and oil reservoir\u003c\/h3\u003e \u003cp\u003eAny hard driven car with generate a lot of heat within its braking system. This heat is conducted through the hub to the damper unit. By inverting the oil and gas reservoir the oil and gas is moved away from the hub assembly . This reduces the amount of conducted heat being transferred from the braking system to the hub then to the damper and then on to the gas and oil. As the oil and gas is heated its properties change which has a knock on effect on the damping characteristics of the suspension. By keeping the gas and oil temperatures down BC Racing RM coilovers keep damping rates more consistant resulting in better performing suspension and ultimately allowing you to corner faster, which is the bottom line.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced flex\u003c\/h3\u003e \u003cp\u003eThe large 42mm damper rod and inverted design gives the inverted damper units much greater strength and resistance to side loadings. By reducing flex the RM inverted units lead to more consistant steering geometry resulting in more predicatable and responsive handling.\u003c\/p\u003e \u003ch3\u003eCorner weight adjustment\u003c\/h3\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRide height adjustment\u003c\/h3\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eDamping adjustment\u003c\/h3\u003e \u003cp\u003eThe RM Series coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003ePillowball (rose joint) upper mount\u003c\/h3\u003e \u003cp\u003eMany of the BC Racing RM coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCamber adjustment\u003c\/h3\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCorrosion protection\u003c\/h3\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eHigh quality coil springs\u003c\/h3\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePatented concave lower locking collar\u003c\/h3\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality oil\u003c\/h3\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn’t degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eNitrogen pressurised dampers\u003c\/h3\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eBearing mounted upper spring platform\u003c\/h3\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking’ down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763480580426,"sku":"BC-RM MA-I-41","price":1289.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-rm-series-coilovers-bmw-3-f30-f31-12-bolt-266.webp?v=1784491739"},{"product_id":"bc-racing-er-series-coilovers-bmw-3-series-f30-f31-12-saloon-5-bolt","title":"BC Racing ER-Series Coilovers BMW 3-Series F30 F31 12+ - Saloon 5 Bolt","description":"\u003cdiv class=\"bc-coilover-Info\"\u003e \u003cp\u003eOur External reservoir ER Series comes with separate compression and rebound damping adjustment. The ER Series coilovers bring with them the high quality and unique features seen on the BR and RM type but have the additional benefit of external reservoirs and the ability to allow the end user to individually adjust and set compression and rebound damping rates.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eExternal reservoir\u003c\/h3\u003e \u003cp\u003eThe external reservoir ER Series coilovers allow BC Racing to increase the oil capacity of the damper unit. The additional oil capacity reduces peak oil temperatures which decreases variations in damping rates due to oil viscosity changes. The reduction in damping rate variations improves handling and ultimate on road and track performance.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"bc-coilover-Info\"\u003e \u003ch3\u003eSeparate compression and rebound damping adjustment\u003c\/h3\u003e \u003cp\u003eBy separating the adjustment for damping compression and rebound the ER Series allows you to dial the vehicle in to your exact needs. When braking hard whilst approaching a corner you want the car to transfer weight to the front tyres to maximise grip for the braking effort and also to allow you to trail brake into the corner without the car understeering.\u003c\/p\u003e \u003cp\u003eAs you start to lift off the brakes on corner entry you don't want the suspension to snap back up too quickly as this will remove the loading from the front tyres too quickly and lead to understeer. As soon as the car starts to understeer you need to wind off the steering lock to reduce the work effort applied to the tyres to allow them to regain traction. This slows the vehicles ultimate speed.\u003c\/p\u003e \u003cp\u003eThe compression damping adjustment allows you to fine tune the way the car rolls onto its front tyres during braking and the separate rebound adjustment allows you to fine tune the way the car responds as you come off the brakes to enter the corner proper and keep the front end hooked up. This allows you to get back on the power sooner and maximise corner exit speed. Corner exit speed is vital because this determines you maximum speed achieved down the next straight.\u003c\/p\u003e \u003ch3\u003eCorner weight adjustment\u003c\/h3\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRide height adjustment\u003c\/h3\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePillowball (rose joint) upper mount\u003c\/h3\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCamber adjustment\u003c\/h3\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCorrosion protection\u003c\/h3\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality coil springs\u003c\/h3\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePatented concave lower locking collar\u003c\/h3\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality oil\u003c\/h3\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eNitrogen pressurised dampers\u003c\/h3\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eBearing mounted upper spring platform\u003c\/h3\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e \u003c\/div\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763480613194,"sku":"BC-ER-I-80","price":1749.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-er-series-coilovers-bmw-3-f30-f31-12-saloon-5-bolt-922.webp?v=1784491740"},{"product_id":"bc-racing-er-series-coilovers-bmw-3-series-f30-f31-12-saloon-3-bolt","title":"BC Racing ER-Series Coilovers BMW 3-Series F30 F31 12+ - Saloon 3 Bolt","description":"\u003cdiv class=\"bc-coilover-Info\"\u003e \u003cp\u003eOur External reservoir ER Series comes with separate compression and rebound damping adjustment. The ER Series coilovers bring with them the high quality and unique features seen on the BR and RM type but have the additional benefit of external reservoirs and the ability to allow the end user to individually adjust and set compression and rebound damping rates.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eExternal reservoir\u003c\/h3\u003e \u003cp\u003eThe external reservoir ER Series coilovers allow BC Racing to increase the oil capacity of the damper unit. The additional oil capacity reduces peak oil temperatures which decreases variations in damping rates due to oil viscosity changes. The reduction in damping rate variations improves handling and ultimate on road and track performance.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"bc-coilover-Info\"\u003e \u003ch3\u003eSeparate compression and rebound damping adjustment\u003c\/h3\u003e \u003cp\u003eBy separating the adjustment for damping compression and rebound the ER Series allows you to dial the vehicle in to your exact needs. When braking hard whilst approaching a corner you want the car to transfer weight to the front tyres to maximise grip for the braking effort and also to allow you to trail brake into the corner without the car understeering.\u003c\/p\u003e \u003cp\u003eAs you start to lift off the brakes on corner entry you don't want the suspension to snap back up too quickly as this will remove the loading from the front tyres too quickly and lead to understeer. As soon as the car starts to understeer you need to wind off the steering lock to reduce the work effort applied to the tyres to allow them to regain traction. This slows the vehicles ultimate speed.\u003c\/p\u003e \u003cp\u003eThe compression damping adjustment allows you to fine tune the way the car rolls onto its front tyres during braking and the separate rebound adjustment allows you to fine tune the way the car responds as you come off the brakes to enter the corner proper and keep the front end hooked up. This allows you to get back on the power sooner and maximise corner exit speed. Corner exit speed is vital because this determines you maximum speed achieved down the next straight.\u003c\/p\u003e \u003ch3\u003eCorner weight adjustment\u003c\/h3\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRide height adjustment\u003c\/h3\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePillowball (rose joint) upper mount\u003c\/h3\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCamber adjustment\u003c\/h3\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCorrosion protection\u003c\/h3\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality coil springs\u003c\/h3\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePatented concave lower locking collar\u003c\/h3\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality oil\u003c\/h3\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eNitrogen pressurised dampers\u003c\/h3\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eBearing mounted upper spring platform\u003c\/h3\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e \u003c\/div\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763480645962,"sku":"BC-ER-I-29","price":1849.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-er-series-coilovers-bmw-3-f30-f31-12-saloon-bolt-731.webp?v=1784491740"},{"product_id":"bc-racing-br-series-coilovers-bmw-3-series-f34-13-gt-50mm-strut","title":"BC Racing BR-Series Coilovers BMW 3-Series F34 13+ - GT 50mm Strut","description":"\u003cp\u003eThe BR series coilovers use a large 46mm diameter piston in a 53mm diameter damper body to maximise oil capacity.\u003c\/p\u003e \u003cp\u003eAs the damper unit operates the oil contained within heats up. The viscosity of oil changes as its temperature varies which can lead to changes in the damping characteristic of the unit.\u003c\/p\u003e \u003cp\u003eBC Racing only use a very high quality oil with their coilovers but go that extra mile to maximise performance and build their BR range with a large 53mm diameter damper body. This increases the capacity of the unit which increases the volume of oil contained which in turn reduces the peak temperature and so significantly improves damper performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCorner weight adjustment\u003c\/h2\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eRide height adjustment\u003c\/h2\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eDamping adjustment\u003c\/h2\u003e \u003cp\u003eBR coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePillowball (rose joint) upper mount\u003c\/h2\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCamber adjustment\u003c\/h2\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCorrosion protection\u003c\/h2\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality coil springs\u003c\/h2\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePatented concave lower locking collar\u003c\/h2\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality oil\u003c\/h2\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eNitrogen pressurised dampers\u003c\/h2\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eBearing mounted upper spring platform\u003c\/h2\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763480678730,"sku":"BC-0050648","price":1049.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-br-series-coilovers-bmw-3-f34-13-gt-50mm-strut-408.webp?v=1784491741"},{"product_id":"bc-racing-br-series-coilovers-bmw-3-series-f30-f31-12-saloon-5-bolt-awd","title":"BC Racing BR-Series Coilovers BMW 3-Series F30 F31 12+ - Saloon 5 Bolt AWD","description":"\u003cp\u003eThe BR series coilovers use a large 46mm diameter piston in a 53mm diameter damper body to maximise oil capacity.\u003c\/p\u003e \u003cp\u003eAs the damper unit operates the oil contained within heats up. The viscosity of oil changes as its temperature varies which can lead to changes in the damping characteristic of the unit.\u003c\/p\u003e \u003cp\u003eBC Racing only use a very high quality oil with their coilovers but go that extra mile to maximise performance and build their BR range with a large 53mm diameter damper body. This increases the capacity of the unit which increases the volume of oil contained which in turn reduces the peak temperature and so significantly improves damper performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCorner weight adjustment\u003c\/h2\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eRide height adjustment\u003c\/h2\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eDamping adjustment\u003c\/h2\u003e \u003cp\u003eBR coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePillowball (rose joint) upper mount\u003c\/h2\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCamber adjustment\u003c\/h2\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCorrosion protection\u003c\/h2\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality coil springs\u003c\/h2\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePatented concave lower locking collar\u003c\/h2\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality oil\u003c\/h2\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eNitrogen pressurised dampers\u003c\/h2\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eBearing mounted upper spring platform\u003c\/h2\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763480711498,"sku":"BC-0040383","price":1099.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-br-series-coilovers-bmw-3-f30-f31-12-saloon-5-bolt-awd-433.webp?v=1784491742"},{"product_id":"bc-racing-br-series-coilovers-bmw-3-series-f30-f31-12-saloon-5-bolt","title":"BC Racing BR-Series Coilovers BMW 3-Series F30 F31 12+ - Saloon 5 Bolt","description":"\u003cp\u003eThe BR series coilovers use a large 46mm diameter piston in a 53mm diameter damper body to maximise oil capacity.\u003c\/p\u003e \u003cp\u003eAs the damper unit operates the oil contained within heats up. The viscosity of oil changes as its temperature varies which can lead to changes in the damping characteristic of the unit.\u003c\/p\u003e \u003cp\u003eBC Racing only use a very high quality oil with their coilovers but go that extra mile to maximise performance and build their BR range with a large 53mm diameter damper body. This increases the capacity of the unit which increases the volume of oil contained which in turn reduces the peak temperature and so significantly improves damper performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCorner weight adjustment\u003c\/h2\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eRide height adjustment\u003c\/h2\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eDamping adjustment\u003c\/h2\u003e \u003cp\u003eBR coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePillowball (rose joint) upper mount\u003c\/h2\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCamber adjustment\u003c\/h2\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCorrosion protection\u003c\/h2\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality coil springs\u003c\/h2\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePatented concave lower locking collar\u003c\/h2\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality oil\u003c\/h2\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eNitrogen pressurised dampers\u003c\/h2\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eBearing mounted upper spring platform\u003c\/h2\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763480744266,"sku":"BC-0023607","price":1099.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-br-series-coilovers-bmw-3-f30-f31-12-saloon-5-bolt-195.webp?v=1784491743"},{"product_id":"bc-racing-br-series-coilovers-bmw-3-series-f30-f31-12-saloon-3-bolt","title":"BC Racing BR-Series Coilovers BMW 3-Series F30 F31 12+ - Saloon 3 Bolt","description":"\u003cp\u003eThe BR series coilovers use a large 46mm diameter piston in a 53mm diameter damper body to maximise oil capacity.\u003c\/p\u003e \u003cp\u003eAs the damper unit operates the oil contained within heats up. The viscosity of oil changes as its temperature varies which can lead to changes in the damping characteristic of the unit.\u003c\/p\u003e \u003cp\u003eBC Racing only use a very high quality oil with their coilovers but go that extra mile to maximise performance and build their BR range with a large 53mm diameter damper body. This increases the capacity of the unit which increases the volume of oil contained which in turn reduces the peak temperature and so significantly improves damper performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCorner weight adjustment\u003c\/h2\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eRide height adjustment\u003c\/h2\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eDamping adjustment\u003c\/h2\u003e \u003cp\u003eBR coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePillowball (rose joint) upper mount\u003c\/h2\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCamber adjustment\u003c\/h2\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCorrosion protection\u003c\/h2\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality coil springs\u003c\/h2\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePatented concave lower locking collar\u003c\/h2\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality oil\u003c\/h2\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eNitrogen pressurised dampers\u003c\/h2\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eBearing mounted upper spring platform\u003c\/h2\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763480777034,"sku":"BC-0008609","price":1099.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-br-series-coilovers-bmw-3-f30-f31-12-saloon-bolt-102.webp?v=1784491744"},{"product_id":"bc-racing-br-series-coilovers-bmw-3-series-f30-f31-12-3-bolt","title":"BC Racing BR-Series Coilovers BMW 3-Series F30 F31 12+ - 3 Bolt","description":"\u003cp\u003eThe BR series coilovers use a large 46mm diameter piston in a 53mm diameter damper body to maximise oil capacity.\u003c\/p\u003e \u003cp\u003eAs the damper unit operates the oil contained within heats up. The viscosity of oil changes as its temperature varies which can lead to changes in the damping characteristic of the unit.\u003c\/p\u003e \u003cp\u003eBC Racing only use a very high quality oil with their coilovers but go that extra mile to maximise performance and build their BR range with a large 53mm diameter damper body. This increases the capacity of the unit which increases the volume of oil contained which in turn reduces the peak temperature and so significantly improves damper performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCorner weight adjustment\u003c\/h2\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eRide height adjustment\u003c\/h2\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eDamping adjustment\u003c\/h2\u003e \u003cp\u003eBR coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePillowball (rose joint) upper mount\u003c\/h2\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCamber adjustment\u003c\/h2\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCorrosion protection\u003c\/h2\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality coil springs\u003c\/h2\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePatented concave lower locking collar\u003c\/h2\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality oil\u003c\/h2\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eNitrogen pressurised dampers\u003c\/h2\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eBearing mounted upper spring platform\u003c\/h2\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763480809802,"sku":"BC-0027182","price":1099.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-br-series-coilovers-bmw-3-f30-f31-12-bolt-231.webp?v=1784491744"},{"product_id":"bc-racing-br-series-coilovers-bmw-3-series-g20-19-50mm-strut","title":"BC Racing BR-Series Coilovers BMW 3-Series G20 19+ - 50mm Strut","description":"\u003cp\u003eThe BR series coilovers use a large 46mm diameter piston in a 53mm diameter damper body to maximise oil capacity.\u003c\/p\u003e \u003cp\u003eAs the damper unit operates the oil contained within heats up. The viscosity of oil changes as its temperature varies which can lead to changes in the damping characteristic of the unit.\u003c\/p\u003e \u003cp\u003eBC Racing only use a very high quality oil with their coilovers but go that extra mile to maximise performance and build their BR range with a large 53mm diameter damper body. This increases the capacity of the unit which increases the volume of oil contained which in turn reduces the peak temperature and so significantly improves damper performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCorner weight adjustment\u003c\/h2\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eRide height adjustment\u003c\/h2\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eDamping adjustment\u003c\/h2\u003e \u003cp\u003eBR coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePillowball (rose joint) upper mount\u003c\/h2\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCamber adjustment\u003c\/h2\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCorrosion protection\u003c\/h2\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality coil springs\u003c\/h2\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePatented concave lower locking collar\u003c\/h2\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality oil\u003c\/h2\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eNitrogen pressurised dampers\u003c\/h2\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eBearing mounted upper spring platform\u003c\/h2\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763497193802,"sku":"BC-0050649","price":1049.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-br-series-coilovers-bmw-3-g20-19-50mm-strut-570.webp?v=1784491931"},{"product_id":"bc-racing-rm-series-coilovers-bmw-4-series-f32-14-5-bolt-awd","title":"BC Racing RM-Series Coilovers BMW 4-Series F32   14+ - 5 Bolt AWD","description":"\u003cul\u003e \u003cli\u003eInverted monotube damper bodies\u003c\/li\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eInverted damper\u003c\/h3\u003e \u003cp\u003eThe BC Racing RM series feature high quality damping adjustable monotube inverted dampers at the front or front and rear, depending on vehicle. The RM coilovers offer the majority of the features of the BR series but with the additional benefit of the inverted damper unit. Inverting the damper unit brings with it a number of advantages.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced unsprung weight\u003c\/h3\u003e \u003cp\u003eUnsprung weight is reduced by moving the oil and gas reservoir way from the hub and attaching it to the shell. Unsprung weight is vital to a cars performance as a lighter wheel and hub assembly which readily moves in response to road bumps will have more grip when tracking over an imperfect road. A high unsprung weight can lead to wheel hop over bumpy ground and will reduce the quality of the ride and also untlimate handling as anything that impairs the suspension ability to maintain contact between road and tyre will be of detriment to the cars performance.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced heat transfer to the gas and oil reservoir\u003c\/h3\u003e \u003cp\u003eAny hard driven car with generate a lot of heat within its braking system. This heat is conducted through the hub to the damper unit. By inverting the oil and gas reservoir the oil and gas is moved away from the hub assembly . This reduces the amount of conducted heat being transferred from the braking system to the hub then to the damper and then on to the gas and oil. As the oil and gas is heated its properties change which has a knock on effect on the damping characteristics of the suspension. By keeping the gas and oil temperatures down BC Racing RM coilovers keep damping rates more consistant resulting in better performing suspension and ultimately allowing you to corner faster, which is the bottom line.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced flex\u003c\/h3\u003e \u003cp\u003eThe large 42mm damper rod and inverted design gives the inverted damper units much greater strength and resistance to side loadings. By reducing flex the RM inverted units lead to more consistant steering geometry resulting in more predicatable and responsive handling.\u003c\/p\u003e \u003ch3\u003eCorner weight adjustment\u003c\/h3\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRide height adjustment\u003c\/h3\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eDamping adjustment\u003c\/h3\u003e \u003cp\u003eThe RM Series coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003ePillowball (rose joint) upper mount\u003c\/h3\u003e \u003cp\u003eMany of the BC Racing RM coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCamber adjustment\u003c\/h3\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCorrosion protection\u003c\/h3\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eHigh quality coil springs\u003c\/h3\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePatented concave lower locking collar\u003c\/h3\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality oil\u003c\/h3\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn’t degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eNitrogen pressurised dampers\u003c\/h3\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eBearing mounted upper spring platform\u003c\/h3\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking’ down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763524325706,"sku":"BC-RM MA-I-85","price":1289.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-rm-series-coilovers-bmw-4-f32-14-5-bolt-awd-663.webp?v=1784492237"},{"product_id":"bc-racing-rm-series-coilovers-bmw-4-series-f32-14-3-bolt-rwd","title":"BC Racing RM-Series Coilovers BMW 4-Series F32   14+ - 3 Bolt RWD","description":"\u003cul\u003e \u003cli\u003eInverted monotube damper bodies\u003c\/li\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eInverted damper\u003c\/h3\u003e \u003cp\u003eThe BC Racing RM series feature high quality damping adjustable monotube inverted dampers at the front or front and rear, depending on vehicle. The RM coilovers offer the majority of the features of the BR series but with the additional benefit of the inverted damper unit. Inverting the damper unit brings with it a number of advantages.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced unsprung weight\u003c\/h3\u003e \u003cp\u003eUnsprung weight is reduced by moving the oil and gas reservoir way from the hub and attaching it to the shell. Unsprung weight is vital to a cars performance as a lighter wheel and hub assembly which readily moves in response to road bumps will have more grip when tracking over an imperfect road. A high unsprung weight can lead to wheel hop over bumpy ground and will reduce the quality of the ride and also untlimate handling as anything that impairs the suspension ability to maintain contact between road and tyre will be of detriment to the cars performance.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced heat transfer to the gas and oil reservoir\u003c\/h3\u003e \u003cp\u003eAny hard driven car with generate a lot of heat within its braking system. This heat is conducted through the hub to the damper unit. By inverting the oil and gas reservoir the oil and gas is moved away from the hub assembly . This reduces the amount of conducted heat being transferred from the braking system to the hub then to the damper and then on to the gas and oil. As the oil and gas is heated its properties change which has a knock on effect on the damping characteristics of the suspension. By keeping the gas and oil temperatures down BC Racing RM coilovers keep damping rates more consistant resulting in better performing suspension and ultimately allowing you to corner faster, which is the bottom line.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced flex\u003c\/h3\u003e \u003cp\u003eThe large 42mm damper rod and inverted design gives the inverted damper units much greater strength and resistance to side loadings. By reducing flex the RM inverted units lead to more consistant steering geometry resulting in more predicatable and responsive handling.\u003c\/p\u003e \u003ch3\u003eCorner weight adjustment\u003c\/h3\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRide height adjustment\u003c\/h3\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eDamping adjustment\u003c\/h3\u003e \u003cp\u003eThe RM Series coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003ePillowball (rose joint) upper mount\u003c\/h3\u003e \u003cp\u003eMany of the BC Racing RM coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCamber adjustment\u003c\/h3\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCorrosion protection\u003c\/h3\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eHigh quality coil springs\u003c\/h3\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePatented concave lower locking collar\u003c\/h3\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality oil\u003c\/h3\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn’t degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eNitrogen pressurised dampers\u003c\/h3\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eBearing mounted upper spring platform\u003c\/h3\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking’ down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763524358474,"sku":"BC-RM MA-I-61","price":1289.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-rm-series-coilovers-bmw-4-f32-14-3-bolt-rwd-976.webp?v=1784492238"},{"product_id":"bc-racing-rm-series-coilovers-bmw-4-series-f32-14-3-bolt-awd","title":"BC Racing RM-Series Coilovers BMW 4-Series F32   14+ - 3 Bolt AWD","description":"\u003cul\u003e \u003cli\u003eInverted monotube damper bodies\u003c\/li\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eInverted damper\u003c\/h3\u003e \u003cp\u003eThe BC Racing RM series feature high quality damping adjustable monotube inverted dampers at the front or front and rear, depending on vehicle. The RM coilovers offer the majority of the features of the BR series but with the additional benefit of the inverted damper unit. Inverting the damper unit brings with it a number of advantages.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced unsprung weight\u003c\/h3\u003e \u003cp\u003eUnsprung weight is reduced by moving the oil and gas reservoir way from the hub and attaching it to the shell. Unsprung weight is vital to a cars performance as a lighter wheel and hub assembly which readily moves in response to road bumps will have more grip when tracking over an imperfect road. A high unsprung weight can lead to wheel hop over bumpy ground and will reduce the quality of the ride and also untlimate handling as anything that impairs the suspension ability to maintain contact between road and tyre will be of detriment to the cars performance.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced heat transfer to the gas and oil reservoir\u003c\/h3\u003e \u003cp\u003eAny hard driven car with generate a lot of heat within its braking system. This heat is conducted through the hub to the damper unit. By inverting the oil and gas reservoir the oil and gas is moved away from the hub assembly . This reduces the amount of conducted heat being transferred from the braking system to the hub then to the damper and then on to the gas and oil. As the oil and gas is heated its properties change which has a knock on effect on the damping characteristics of the suspension. By keeping the gas and oil temperatures down BC Racing RM coilovers keep damping rates more consistant resulting in better performing suspension and ultimately allowing you to corner faster, which is the bottom line.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced flex\u003c\/h3\u003e \u003cp\u003eThe large 42mm damper rod and inverted design gives the inverted damper units much greater strength and resistance to side loadings. By reducing flex the RM inverted units lead to more consistant steering geometry resulting in more predicatable and responsive handling.\u003c\/p\u003e \u003ch3\u003eCorner weight adjustment\u003c\/h3\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRide height adjustment\u003c\/h3\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eDamping adjustment\u003c\/h3\u003e \u003cp\u003eThe RM Series coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003ePillowball (rose joint) upper mount\u003c\/h3\u003e \u003cp\u003eMany of the BC Racing RM coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCamber adjustment\u003c\/h3\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCorrosion protection\u003c\/h3\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eHigh quality coil springs\u003c\/h3\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePatented concave lower locking collar\u003c\/h3\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality oil\u003c\/h3\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn’t degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eNitrogen pressurised dampers\u003c\/h3\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eBearing mounted upper spring platform\u003c\/h3\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking’ down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763524391242,"sku":"BC-RM MA-I-62","price":1289.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-rm-series-coilovers-bmw-4-f32-14-3-bolt-awd-577.webp?v=1784492239"},{"product_id":"bc-racing-er-series-coilovers-bmw-4-series-f32-14-3-bolt","title":"BC Racing ER-Series Coilovers BMW 4-Series F32   14+ - 3 Bolt","description":"\u003cdiv class=\"bc-coilover-Info\"\u003e \u003cp\u003eOur External reservoir ER Series comes with separate compression and rebound damping adjustment. The ER Series coilovers bring with them the high quality and unique features seen on the BR and RM type but have the additional benefit of external reservoirs and the ability to allow the end user to individually adjust and set compression and rebound damping rates.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eExternal reservoir\u003c\/h3\u003e \u003cp\u003eThe external reservoir ER Series coilovers allow BC Racing to increase the oil capacity of the damper unit. The additional oil capacity reduces peak oil temperatures which decreases variations in damping rates due to oil viscosity changes. The reduction in damping rate variations improves handling and ultimate on road and track performance.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"bc-coilover-Info\"\u003e \u003ch3\u003eSeparate compression and rebound damping adjustment\u003c\/h3\u003e \u003cp\u003eBy separating the adjustment for damping compression and rebound the ER Series allows you to dial the vehicle in to your exact needs. When braking hard whilst approaching a corner you want the car to transfer weight to the front tyres to maximise grip for the braking effort and also to allow you to trail brake into the corner without the car understeering.\u003c\/p\u003e \u003cp\u003eAs you start to lift off the brakes on corner entry you don't want the suspension to snap back up too quickly as this will remove the loading from the front tyres too quickly and lead to understeer. As soon as the car starts to understeer you need to wind off the steering lock to reduce the work effort applied to the tyres to allow them to regain traction. This slows the vehicles ultimate speed.\u003c\/p\u003e \u003cp\u003eThe compression damping adjustment allows you to fine tune the way the car rolls onto its front tyres during braking and the separate rebound adjustment allows you to fine tune the way the car responds as you come off the brakes to enter the corner proper and keep the front end hooked up. This allows you to get back on the power sooner and maximise corner exit speed. Corner exit speed is vital because this determines you maximum speed achieved down the next straight.\u003c\/p\u003e \u003ch3\u003eCorner weight adjustment\u003c\/h3\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRide height adjustment\u003c\/h3\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePillowball (rose joint) upper mount\u003c\/h3\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCamber adjustment\u003c\/h3\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCorrosion protection\u003c\/h3\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality coil springs\u003c\/h3\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePatented concave lower locking collar\u003c\/h3\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality oil\u003c\/h3\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eNitrogen pressurised dampers\u003c\/h3\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eBearing mounted upper spring platform\u003c\/h3\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e \u003c\/div\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763524424010,"sku":"BC-ER-I-61","price":1749.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-er-series-coilovers-bmw-4-f32-14-3-bolt-628.webp?v=1784492240"},{"product_id":"bc-racing-er-series-coilovers-bmw-4-series-f32-14-5-bolt","title":"BC Racing ER-Series Coilovers BMW 4-Series F32   14+ - 5 Bolt","description":"\u003cdiv class=\"bc-coilover-Info\"\u003e \u003cp\u003eOur External reservoir ER Series comes with separate compression and rebound damping adjustment. The ER Series coilovers bring with them the high quality and unique features seen on the BR and RM type but have the additional benefit of external reservoirs and the ability to allow the end user to individually adjust and set compression and rebound damping rates.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eExternal reservoir\u003c\/h3\u003e \u003cp\u003eThe external reservoir ER Series coilovers allow BC Racing to increase the oil capacity of the damper unit. The additional oil capacity reduces peak oil temperatures which decreases variations in damping rates due to oil viscosity changes. The reduction in damping rate variations improves handling and ultimate on road and track performance.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"bc-coilover-Info\"\u003e \u003ch3\u003eSeparate compression and rebound damping adjustment\u003c\/h3\u003e \u003cp\u003eBy separating the adjustment for damping compression and rebound the ER Series allows you to dial the vehicle in to your exact needs. When braking hard whilst approaching a corner you want the car to transfer weight to the front tyres to maximise grip for the braking effort and also to allow you to trail brake into the corner without the car understeering.\u003c\/p\u003e \u003cp\u003eAs you start to lift off the brakes on corner entry you don't want the suspension to snap back up too quickly as this will remove the loading from the front tyres too quickly and lead to understeer. As soon as the car starts to understeer you need to wind off the steering lock to reduce the work effort applied to the tyres to allow them to regain traction. This slows the vehicles ultimate speed.\u003c\/p\u003e \u003cp\u003eThe compression damping adjustment allows you to fine tune the way the car rolls onto its front tyres during braking and the separate rebound adjustment allows you to fine tune the way the car responds as you come off the brakes to enter the corner proper and keep the front end hooked up. This allows you to get back on the power sooner and maximise corner exit speed. Corner exit speed is vital because this determines you maximum speed achieved down the next straight.\u003c\/p\u003e \u003ch3\u003eCorner weight adjustment\u003c\/h3\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRide height adjustment\u003c\/h3\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePillowball (rose joint) upper mount\u003c\/h3\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCamber adjustment\u003c\/h3\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCorrosion protection\u003c\/h3\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality coil springs\u003c\/h3\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePatented concave lower locking collar\u003c\/h3\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality oil\u003c\/h3\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eNitrogen pressurised dampers\u003c\/h3\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eBearing mounted upper spring platform\u003c\/h3\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e \u003c\/div\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763524456778,"sku":"BC-ER-I-84","price":1749.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-er-series-coilovers-bmw-4-f32-14-5-bolt-575.webp?v=1784492244"},{"product_id":"bc-racing-br-series-coilovers-bmw-4-series-f32-14-5-bolt-awd","title":"BC Racing BR-Series Coilovers BMW 4-Series F32   14+ - 5 Bolt AWD","description":"\u003cp\u003eThe BR series coilovers use a large 46mm diameter piston in a 53mm diameter damper body to maximise oil capacity.\u003c\/p\u003e \u003cp\u003eAs the damper unit operates the oil contained within heats up. The viscosity of oil changes as its temperature varies which can lead to changes in the damping characteristic of the unit.\u003c\/p\u003e \u003cp\u003eBC Racing only use a very high quality oil with their coilovers but go that extra mile to maximise performance and build their BR range with a large 53mm diameter damper body. This increases the capacity of the unit which increases the volume of oil contained which in turn reduces the peak temperature and so significantly improves damper performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCorner weight adjustment\u003c\/h2\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eRide height adjustment\u003c\/h2\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eDamping adjustment\u003c\/h2\u003e \u003cp\u003eBR coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePillowball (rose joint) upper mount\u003c\/h2\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCamber adjustment\u003c\/h2\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCorrosion protection\u003c\/h2\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality coil springs\u003c\/h2\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePatented concave lower locking collar\u003c\/h2\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality oil\u003c\/h2\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eNitrogen pressurised dampers\u003c\/h2\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eBearing mounted upper spring platform\u003c\/h2\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763524489546,"sku":"BC-0033299","price":1049.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-br-series-coilovers-bmw-4-f32-14-5-bolt-awd-833.webp?v=1784492245"},{"product_id":"bc-racing-br-series-coilovers-bmw-4-series-f32-14-5-bolt","title":"BC Racing BR-Series Coilovers BMW 4-Series F32   14+ - 5 Bolt","description":"\u003cp\u003eThe BR series coilovers use a large 46mm diameter piston in a 53mm diameter damper body to maximise oil capacity.\u003c\/p\u003e \u003cp\u003eAs the damper unit operates the oil contained within heats up. The viscosity of oil changes as its temperature varies which can lead to changes in the damping characteristic of the unit.\u003c\/p\u003e \u003cp\u003eBC Racing only use a very high quality oil with their coilovers but go that extra mile to maximise performance and build their BR range with a large 53mm diameter damper body. This increases the capacity of the unit which increases the volume of oil contained which in turn reduces the peak temperature and so significantly improves damper performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCorner weight adjustment\u003c\/h2\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eRide height adjustment\u003c\/h2\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eDamping adjustment\u003c\/h2\u003e \u003cp\u003eBR coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePillowball (rose joint) upper mount\u003c\/h2\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCamber adjustment\u003c\/h2\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCorrosion protection\u003c\/h2\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality coil springs\u003c\/h2\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePatented concave lower locking collar\u003c\/h2\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality oil\u003c\/h2\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eNitrogen pressurised dampers\u003c\/h2\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eBearing mounted upper spring platform\u003c\/h2\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763524522314,"sku":"BC-0033298","price":1049.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-br-series-coilovers-bmw-4-f32-14-5-bolt-294.webp?v=1784492245"},{"product_id":"bc-racing-br-series-coilovers-bmw-4-series-f32-14-3-bolt-awd","title":"BC Racing BR-Series Coilovers BMW 4-Series F32   14+ - 3 Bolt AWD","description":"\u003cp\u003eThe BR series coilovers use a large 46mm diameter piston in a 53mm diameter damper body to maximise oil capacity.\u003c\/p\u003e \u003cp\u003eAs the damper unit operates the oil contained within heats up. The viscosity of oil changes as its temperature varies which can lead to changes in the damping characteristic of the unit.\u003c\/p\u003e \u003cp\u003eBC Racing only use a very high quality oil with their coilovers but go that extra mile to maximise performance and build their BR range with a large 53mm diameter damper body. This increases the capacity of the unit which increases the volume of oil contained which in turn reduces the peak temperature and so significantly improves damper performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCorner weight adjustment\u003c\/h2\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eRide height adjustment\u003c\/h2\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eDamping adjustment\u003c\/h2\u003e \u003cp\u003eBR coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePillowball (rose joint) upper mount\u003c\/h2\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCamber adjustment\u003c\/h2\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCorrosion protection\u003c\/h2\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality coil springs\u003c\/h2\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePatented concave lower locking collar\u003c\/h2\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality oil\u003c\/h2\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eNitrogen pressurised dampers\u003c\/h2\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eBearing mounted upper spring platform\u003c\/h2\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763524555082,"sku":"BC-0030625","price":1049.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-br-series-coilovers-bmw-4-f32-14-3-bolt-awd-110.webp?v=1784492246"},{"product_id":"bc-racing-br-series-coilovers-bmw-4-series-f32-14-3-bolt-rwd","title":"BC Racing BR-Series Coilovers BMW 4-Series F32   14+ - 3 Bolt RWD","description":"\u003cp\u003eThe BR series coilovers use a large 46mm diameter piston in a 53mm diameter damper body to maximise oil capacity.\u003c\/p\u003e \u003cp\u003eAs the damper unit operates the oil contained within heats up. The viscosity of oil changes as its temperature varies which can lead to changes in the damping characteristic of the unit.\u003c\/p\u003e \u003cp\u003eBC Racing only use a very high quality oil with their coilovers but go that extra mile to maximise performance and build their BR range with a large 53mm diameter damper body. This increases the capacity of the unit which increases the volume of oil contained which in turn reduces the peak temperature and so significantly improves damper performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCorner weight adjustment\u003c\/h2\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eRide height adjustment\u003c\/h2\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eDamping adjustment\u003c\/h2\u003e \u003cp\u003eBR coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePillowball (rose joint) upper mount\u003c\/h2\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCamber adjustment\u003c\/h2\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCorrosion protection\u003c\/h2\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality coil springs\u003c\/h2\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePatented concave lower locking collar\u003c\/h2\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality oil\u003c\/h2\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eNitrogen pressurised dampers\u003c\/h2\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eBearing mounted upper spring platform\u003c\/h2\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763524587850,"sku":"BC-0030624","price":1049.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-br-series-coilovers-bmw-4-f32-14-3-bolt-rwd-880.webp?v=1784492247"},{"product_id":"bc-racing-br-series-coilovers-bmw-5-series-e39-95-04-touring","title":"BC Racing BR-Series Coilovers BMW 5-Series E39 95-04 - Touring","description":"\u003cp\u003eThe BR series coilovers use a large 46mm diameter piston in a 53mm diameter damper body to maximise oil capacity.\u003c\/p\u003e \u003cp\u003eAs the damper unit operates the oil contained within heats up. The viscosity of oil changes as its temperature varies which can lead to changes in the damping characteristic of the unit.\u003c\/p\u003e \u003cp\u003eBC Racing only use a very high quality oil with their coilovers but go that extra mile to maximise performance and build their BR range with a large 53mm diameter damper body. This increases the capacity of the unit which increases the volume of oil contained which in turn reduces the peak temperature and so significantly improves damper performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCorner weight adjustment\u003c\/h2\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eRide height adjustment\u003c\/h2\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eDamping adjustment\u003c\/h2\u003e \u003cp\u003eBR coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePillowball (rose joint) upper mount\u003c\/h2\u003e \u003cp\u003eMany of the BC Racing BR coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCamber adjustment\u003c\/h2\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eCorrosion protection\u003c\/h2\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality coil springs\u003c\/h2\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003ePatented concave lower locking collar\u003c\/h2\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eHigh quality oil\u003c\/h2\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn't degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eNitrogen pressurised dampers\u003c\/h2\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch2\u003e \u003c\/h2\u003e \u003ch2\u003eBearing mounted upper spring platform\u003c\/h2\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking' down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763537727818,"sku":"BC-0027198","price":1049.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-br-series-coilovers-bmw-5-e39-95-04-touring-938.webp?v=1784492376"},{"product_id":"bc-racing-rm-series-coilovers-bmw-5-series-e39-95-04-touring","title":"BC Racing RM-Series Coilovers BMW 5-Series E39 95-04 - Touring","description":"\u003cul\u003e \u003cli\u003eInverted monotube damper bodies\u003c\/li\u003e \u003cli\u003ePillowball upper mount\u003c\/li\u003e \u003cli\u003eCamber adjustable top mounts\u003c\/li\u003e \u003cli\u003eAluminium top plates\u003c\/li\u003e \u003cli\u003e30 way adjustable damping\u003c\/li\u003e \u003cli\u003eAdjustable spring platform\u003c\/li\u003e \u003cli\u003eHeight adjustment via bottom mount to retain full damper travel\u003c\/li\u003e \u003cli\u003eBearing mounted upper front spring platform\u003c\/li\u003e \u003cli\u003eDust boot to protect damper seals\u003c\/li\u003e \u003cli\u003e* some features are dependent on model\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eInverted damper\u003c\/h3\u003e \u003cp\u003eThe BC Racing RM series feature high quality damping adjustable monotube inverted dampers at the front or front and rear, depending on vehicle. The RM coilovers offer the majority of the features of the BR series but with the additional benefit of the inverted damper unit. Inverting the damper unit brings with it a number of advantages.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced unsprung weight\u003c\/h3\u003e \u003cp\u003eUnsprung weight is reduced by moving the oil and gas reservoir way from the hub and attaching it to the shell. Unsprung weight is vital to a cars performance as a lighter wheel and hub assembly which readily moves in response to road bumps will have more grip when tracking over an imperfect road. A high unsprung weight can lead to wheel hop over bumpy ground and will reduce the quality of the ride and also untlimate handling as anything that impairs the suspension ability to maintain contact between road and tyre will be of detriment to the cars performance.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced heat transfer to the gas and oil reservoir\u003c\/h3\u003e \u003cp\u003eAny hard driven car with generate a lot of heat within its braking system. This heat is conducted through the hub to the damper unit. By inverting the oil and gas reservoir the oil and gas is moved away from the hub assembly . This reduces the amount of conducted heat being transferred from the braking system to the hub then to the damper and then on to the gas and oil. As the oil and gas is heated its properties change which has a knock on effect on the damping characteristics of the suspension. By keeping the gas and oil temperatures down BC Racing RM coilovers keep damping rates more consistant resulting in better performing suspension and ultimately allowing you to corner faster, which is the bottom line.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eReduced flex\u003c\/h3\u003e \u003cp\u003eThe large 42mm damper rod and inverted design gives the inverted damper units much greater strength and resistance to side loadings. By reducing flex the RM inverted units lead to more consistant steering geometry resulting in more predicatable and responsive handling.\u003c\/p\u003e \u003ch3\u003eCorner weight adjustment\u003c\/h3\u003e \u003cp\u003eThe lower spring platform of the BC Racing coilovers are adjustable. This allows the car to be set up for corner weighting to achieve perfect balance and ensures that maximum tyre efficiency is achieved.\u003c\/p\u003e \u003cp\u003eThe car needs to be placing equal weight on each tyre on an axle so both front tyres need to be taking equal loading as do both rears. This makes sure that both tyres are doing their equal share of work when cornering which increases overall grip, maximises corner speed and reduces lap times.\u003c\/p\u003e \u003cp\u003eOptional assister springs can be purchased to allow wheel droop to be dialled into the unit to suit specific needs.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRide height adjustment\u003c\/h3\u003e \u003cp\u003eRide height is determined by the position of the coilover bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment.\u003c\/p\u003e \u003cp\u003eBecause ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eDamping adjustment\u003c\/h3\u003e \u003cp\u003eThe RM Series coilovers feature 30 way damping adjustment that combines both rebound and compression in one adjuster for simplicity and ease of use. This adjustable facility allows you to fine tune the vehicle to meet the relevant conditions.\u003c\/p\u003e \u003cp\u003eBy tweaking front and rear damping you can adjust the way the car handles. Increasing damping force on the rear relative to the front, for example, will start moving the vehicle into a more oversteer orientated stance.\u003c\/p\u003e \u003cp\u003eIf you want to go drag racing in a rear wheel drive car then you want the back of the car to squat off the line to maximise weight transfer to the rear and therefore onto the rear tyres. This maximises traction and helps prevent wheel spin. To achieve this you would soften the rear dampers to allow faster compression. If you had the rear dampers set to hard, as you might run the car on a race track, then the car would be less inclined to squat so traction would be reduced.\u003c\/p\u003e \u003cp\u003eConversely, if you want to go drifting and are finding it hard to break traction and are having problems with understeer then making the rear dampers harder will help reduce traction whilst making the front dampers softer will give greater front traction. This will make the rear of the car looser whilst minimising understeer thus altering the vehicles handling characteristics more towards drift than drag, road or track.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003ePillowball (rose joint) upper mount\u003c\/h3\u003e \u003cp\u003eMany of the BC Racing RM coilovers come with pillowball upper mounts. The mount itself is made from aluminium alloy, anodised and then bead blasted to give a high quality, durable finish.\u003c\/p\u003e \u003cp\u003eThe pillowballs themselves are of Japanese manufacture and their solid nature eliminates any flex or play associated with the standard rubber mounts so improving response and handling.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCamber adjustment\u003c\/h3\u003e \u003cp\u003eIf its possible to include camber adjustment on your vehicle then the BC Racing coilovers automatically include camber adjustable aluminium pillowball top mounts. These feature the same high quality Japanese manufactured pillowball but give the added benefit of an adjustable top mount that allows camber to be set to suit your needs be it road, track or drift.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eCorrosion protection\u003c\/h3\u003e \u003cp\u003eThe damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eHigh quality coil springs\u003c\/h3\u003e \u003cp\u003eBC Racing coilovers only use the highest quality steel for their spring manufacturer. They are produced from SAE9254 high strength durable cold wound steel.\u003c\/p\u003e \u003cp\u003eThe springs are compression tested through over 500,000 cycles with less that 5% deformation.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003ePatented concave lower locking collar\u003c\/h3\u003e \u003cp\u003eCoilovers use a locking collar to prevent the bottom mount becoming loose. If the bottom mount becomes loose then the damper body can work its way down into the bottom mount so reducing ride height on that one corner which can lead to dangerous handling characteristics. This is a very common problem for coilovers in general. BC Racing utilise an innovative and patented designed lower locking collar with a bevelled edge that seats into a corresponding bevel in the coilover bottom mount. This vastly increases the surface area that the locking collar works on and so prevents the common and dangerous problem of the locking collars working loose.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eHigh quality oil\u003c\/h3\u003e \u003cp\u003eBC Racing dampers use a sophisticated shim stack design and high quality oil to consistently control the compression and rebound speed of the damper rod even under the most extreme conditions.\u003c\/p\u003e \u003cp\u003eAs the vehicles travels over rough ground the compression and rebound motion of the damper rod heats the oil. Poor quality dampers use cheap oil whose characteristics alter with varying temperatures. Its vital that high quality oil is used that can maintain consistent viscosity under a wide temperature operating range. Once the oil start to degrade, its properties change leading to damping changes leading to changes in the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eBC Racing ensures that only high quality oil is used so that damping rates are maintained not only for the moment in hand (i.e. whilst out for a back road blast on or track) but that long term longevity is maximised with oil that doesn’t degrade quickly over time thus extending the dampers operating life significantly.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eNitrogen pressurised dampers\u003c\/h3\u003e \u003cp\u003eWhen you work a damper hard on track or on high speed bumpy roads you can cause the oil to aerate and cavitation can occour. This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect. High quality oil goes a long way to help reduce this problem but BC Racing go one step further and pressurise the dampers with nitrogen. The nitrogen exerts a pressure on a floating piston which in turn exerts a permanent pressure on the oil dramatically reducing aeration and so improving the consistency and quality of the damping. The pressurised nitrogen also adds an additional element of effective spring rate to the damper unit.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003chr\u003e \u003ch3\u003eBearing mounted upper spring platform\u003c\/h3\u003e \u003cp\u003eBecause the spring twists as it compresses it is very important to minimise stiction between the spring and its seats. If this tension is not relieved then spring binding can occur leading to the spring rate effectively altering slightly as the spring compresses and extends. The tension generated can lead to rapid deterioration of the spring pearches and in extreme cases can cause the spring platform and locking collars to loosen. This can lead to the platform and locking collars ‘walking’ down the damper resulting in un even ride height and danger of the spring dislocating under full damper extension.\u003c\/p\u003e \u003cp\u003eThe friction between spring and seats also has an effect on steering effort as the springs are physically turned with the wheels. This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics.\u003c\/p\u003e \u003cp\u003eThe bearing mounted upper spring platform is one of BC Racings innovative designs. By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed.\u003c\/p\u003e","brand":"BC Racing","offers":[{"title":"Default Title","offer_id":62763572461898,"sku":"BC-RM MA-I-42","price":1239.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/6116\/1034\/files\/bc-racing-rm-series-coilovers-bmw-5-e39-95-04-touring-693.webp?v=1784492803"}],"url":"https:\/\/sansomsspecialistparts.co.uk\/collections\/bc-racing.oembed?page=3","provider":"Sansoms Specialist Parts","version":"1.0","type":"link"}