HKS Hipermax 4 GT Coilovers for 2011-20 Subaru BRZ/86/FR-S [ZN6/ZC6] 80230-AT001



2011-20 Subaru BRZ/86/FR-S [ZN6/ZC6]

Hipermax 4 GT FR-S / BRZ / FT86 by HKS for the Scion ZN6 FR-S

HKS PN# 80230-AT001

This product is discontinued and no longer available.
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MAX IV GT Code No. 80230-AT001


80230 at001 kit
▲The above photo is an item for ZN6.
80230 at001

Awesome control and comfort ride on the street for a sporty drive. The new Max IV sporty suspension.

The Hipermax IV GT coilovers are designed and manufactured specifically for the Scion FRS. This product is designed to both lower the vehicle and stiffen up the vehicle’s suspension. A lower vehicle ride height aid in a lower center of gravity, which helps out with increase traction at high speeds. A stiffer suspension provides additional traction during aggressive cornering.


  • Single tube damper design
  • Used dust boot
  • PNE Coating
  • “M Shaft”
  • New design needle
  • Reduction of unsprung weight
  • 30 level of dampening adjustments

This is the street version damper for 86/BRZ.
Although this is a product designed for comfort and stylish appearance it is able to hold its own with regards to road performance. 18 inch tires were chosen for settings.
This product is recommended to those who would use the vehicle daily and look for better ride comfort as much as possible for both drivers and passengers and who want to reduce arch gap or lower the vehicles’ height. This damper has been developed to provide high ride quality through its supple yet stable setup. Once out at the race track, a twist of the adjustment dials can provide the performance necessary to enjoy the circuit.
Max 4 dampers utilize analysis data and perform tests on each vehicle to determine not just spring and damper rate, but also front/rear balance and stroke for people to enjoy this product safely. The concept is to try and see things from the viewpoint of the user as much as possible.
This product has many revised and newly made internal parts and includes stabilizer to achieve high levels of comfort handling and low stance without compromising.
In refining the low speed dampening, which is the key to ride comfort and handling, also the mid to high speed dampening properties, a new needle has been developed. Improved low speed dampening gives stable dampening which allows for the supple yet stable ride. It has also allowed the mid/high speed dampening to be cut which has increased performance over bumps and ridges in the road. The adjustment dial operation has been revised to allow oil to flow better to prevent the dial from locking up at under the dial 10.
※5 The bump rubber must be changed to L=10.

Application Specification
Engine FA20
Model Year 12/04 –
Remarks Applied E, GT”Limited”, Manual transmission
Damping force adjustment 30 steps 30 steps
Base valve
Height adjustable lower bracket
Upper mount Spherical bearing Rubber
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)
○ ( 4.7 )


Ride Height mm
Factory *2 Test data Adjustable range
High – Low *3
Drivable range
High – Low *4
FRONT Ride height *1 654 642 670 ~ 610 670 ~ 620
Against stock -16 -28 0 ~ -60 0 ~ -50
REAR Ride height *1 657 645 671 ~ 592 671 ~ 596
Against stock -14 -26 0 ~ -79 0 ~ -75
*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
Spring rate N/mm(kgf/mm) 59 ( 6 ) 38 ( 4 )
Free height (mm) 170 170
Spring type Straight Straight
Recommended range to change spring rate N/mm(kgf/mm) ±20 ( 2 ) ±20 ( 2 )
Specification of damper
Damping force (Rebound/Damping)N* 900 / 300 720 / 150
Default position of dial 15 15
Remaining damper stroke (Rebound/Damping)mm 41 / 46 53 / 47
* The value of the damping force is at piston speed of 0.1m/sec.
Setting data
Default Test Drivable limit
High *
Drivable limit
Low *
Default Test Drivable limit
High *
Drivable limit
Low *
Length of
case (mm)
230 220 245 204 265 254 276 234
Set length(mm)
164 164 170 189 189 206
Length to ride hight
adjuster (mm)
47 37 62 15 51 40 62 3
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
Vehicle weight kg 0 0
Tire size (Air pressure) kPa 215 / 45 – 17 ( 240 ) 215 / 45 – 17 ( 240 )
Wheel size 7.0 JJ × 17 off +48 7.0 JJ × 17 off +48
Test data 0 mm / -1°12′ IN 1 mm / -2°24′
Standard value 0 ± 3 mm / 0°00′ ± 45′ IN 2 ± 3 mm / -1°12′ ± 45′
* Test data at HKS.


Parts List * It may be changed without prior notice.
80230 at001 zu1 en

80230 at001 zu2 en


●Slitting a part of rear interior is required in order to install the rear adjustment dial.

If interested, please contact us at Bulletproof Automotive for more information regarding pricing, fitment, shipping costs, as well as installation recommendations.

Part #: 80230-AT001

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