Bourne HPP Exhaust Valve Spring Honda K20 Boosted

These valve springs are designed for boosted builds and will handle between 350-700 (boosted) & 200-350 (N/A) horsepower. Both sets are designed for standard fitment using original platform shims and retainer setups.

Features:

• Material: EN 10270-2 SiCr
• Wire Diameter: 4.10mm
• Outside Diameter: 29.90mm
• Free Length: 49.61mm
• Solid Length: 25.83mm
• Inside Diameter Min: 21.70mm

Please note that these are sold in a pack of 8.