HKS Hipermax IV SP Suspension Toyota GT86 Subaru BRZ

Application

Specification

Engine

FA20

Model Year

12/04 -

Remarks

FRONT

REAR

Damping force adjustment

30 steps

30 steps

Base valve

-

-

Height adjustable lower bracket

â—‹

â—‹

Upper mount

Spherical bearing

Spherical bearing

Inverted/Normal type

Inverted

Normal

Damper/Spring layout

Coilover

Coilover

Spring rate change at factory

Possible

Possible

Damping force adjustment with wire

-

-

Helper spring
(Spring rate N/mm)

-

â—‹ ( 19.8 )





Ride Height

mm

Factory *2

Test data

Adjustable range
High - Low *3

Drivable range
High - Low *4

FRONT

Ride height *1

652

638

671 ～ 611

671 ～ 629

Against stock

-19

-33

0 ～ -60

0 ～ -42

REAR

Ride height *1

654

642

675 ～ 623

675 ～ 623

Against stock

-21

-33

0 ～ -52

0 ～ -52

*1. Height from road surface to fender arch.
*2. Height at factory is the data tested at HKS with the setting of Full Kit. (HKS' recommended setting.)
*3. Adjustable range (However, the lowest value may not be road legal.
Even within the adjustable range, car body, arm etc. may contact. In such case, it will be hard to drive.
Damper oil leakage or any other problems caused by low ride height setting from the factory setting will void the warranty of the product.)
*4. Drivable range that there is no contact of car body or arms etc. (However, change of tire/wheel size may cause a problem.)
Caution). Actual data depends on each vehicle.





Kit information

Spring of Full Kit

F

R

Spring rate N/mm(kgf/mm)

78 ( 8 )

78 ( 8 )

Free height (mm)

170

150

Spring type

Straight

Straight

Recommended range to change spring rate N/mm(kgf/mm)

±20 ( 2 )

±20 ( 2 )

Specification of damper

F

R

Damping force (Rebound/Damping)N*

1000 / 300

750 / 250

Default position of dial

15

15

Remaining damper stroke (Rebound/Damping)mm

33 / 54

46 / 54

* The value of the damping force is at piston speed of 0.1m/sec.

Setting data

F

R

Default

Test

Drivable limit
High *

Drivable limit
Low *

Default

Test

Drivable limit
High *

Drivable limit
Low *

Length of
case (mm)

225

212

243

204

255

245

271

235

Spring
Set length(mm)

168

168

168

168

199

199

199

204

Length to ride hight
adjuster (mm)

38

25

56

17

25

15

41

0

Lever ratio

1.06

1.28

* Refer to the above explanation *3 of ride height information for drivable high and low limitations.





Test vehicle information

F

R

Vehicle weight kg

669

507

Tire size (Air pressure) kPa

225 / 40 - 18 ( 200 )

255 / 35 - 18 ( 200 )

Wheel size

8.0 JJ × 18 off +40

9.0 JJ × 18 off +52

Alignment
(Toe/Camber)

Test data

-0 °00' / -1 °00'ï½¥-3 °00'

±0 ° / -2 °30'

Standard value

-

-

* Test data at HKS.





Parts List * It may be changed without prior notice.




Point

・The perfect sporty suspension for 86/BRZ.
・For both of street and to circuit drive with high grip radial tire.
・We have set it for the best performance in drivability. It’s not too stiff but have the stability and provide good performance of the tires and still have a comfortable ride.

●Modification for installation
・Need a hole to put through the rear damping force adjustment cable.