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HKS Hipermax IV SP Suspension Toyota GT86 & Subaru BRZ 80250-AT001

Application ‹ÛÛ Specification
Engine FA20
Model Year 12/04 - 
Damping force adjustment 30 steps 30 steps
Base valve - -
Height adjustable lower bracket 䄆 䄆
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)
- 䄆 ( 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 •__‹ÛÛ623 675 •__‹ÛÛ623
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) å±20 ( 2 ) å±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
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 ÌÑ 18 off +40 9.0 JJ ÌÑ 18 off +52
Test data -0å¡00' / -1å¡00'•_´-3å¡00' å±0å¡ / -2å¡30'
Standard value - -
* Test data at HKS.

Parts List * It may be changed without prior notice.

‹ÄÈThe perfect sporty suspension for 86/BRZ.
‹ÄÈFor both of street and to circuit drive with high grip radial tire.
‹ÄÈWe 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.
‰яModification for installation
‹ÄÈNeed a hole to put through the rear damping force adjustment cable.
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