Description

Supra HKS Hipermax IV GT Suspension Kit

Here’s the latest coilover street suspension kit for A90 / GR Supra.

	Code No. 80230-AT023AC

▲The above photo is an item for DB42.

An updated MAX IV GT with improved handling and comfort, an ulimate street suspension.

Application

Specification

Engine	B48
Model Year	19/05 –
Remarks	Note: When height is adjusted various parts will be misaligned. Including Radar, Camera, wheel alignment, and can cause the Toyota Supra Safety system to malfunction.

	FRONT	REAR
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	Separated
Spring rate change at factory	〇	○
Damping force adjustment with wire	–	‐
Helper spring (Spring rate N/mm)	–	–

Ride Height

		Factory *2	Test data	Adjustable range High – Low *3	Drivable range High – Low *4
FRONT	Ride height *1	654	662	676 ～ 631	676 ～ 631
FRONT	Against stock	-33	-25	-11 ～ -56	-11 ～ -56
REAR	Ride height *1	668	673	691 ～　635	691 ～　635
REAR	Against stock	-30	-25	-7 ～ -63	-7 ～ -63

*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)	69 ( 7 )	118 ( 12 )
Free height (mm)	200	250
Spring type	Straight	Straight
Recommended range to change spring rate N/mm(kgf/mm)	±10(1)	±20 ( 2 )

Specification of damper

	F	R
Damping force (Rebound/Damping)N*	1133 / 515	633 / 417
Default position of dial	15	15
Remaining damper stroke (Rebound/Damping)mm	39 / 50	54 / 60

* 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)	279	←	289	264	319	←	339	291
Spring Set length(mm)	195	188	186	200	–	–	–	–
Length to ride hight adjuster (mm)	20	27	39	0	42	45	56	22
Lever ratio	1.18				1.69(spg) , 1.20(dmp)

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

Test vehicle information

		F	R
Vehicle weight kg		785.5	744
Tire size (Air pressure) kPa		255 / 35 – 19 ( 220 )	275 / 35 – 19 ( 220 )
Wheel size		9.5J × 19	10.5J × 19
Alignment (Toe/Camber)	Test data	in 0.4 mm / -2°23′	in 1.2 mm / -2°34′
Alignment (Toe/Camber)	Standard value	in 3.1 mm ± 2.3 mm / -1°45′ ± 0°30′	in 2.7 mm ± 2.3 mm / -2°00′ ± 0°25′

* Test data at HKS.

Parts List * It may be changed without prior notice.

Point

・This is a special combination kit with HIPERMAX IV GT and SEC (suspension error canceler) for GR Supra.
・This kit is packaged with the suspension error canceller which is required when the stock electric control shock absorber of GR Supra is removed.
・This package offers a better price compared to purchasing products separately.
SEC: https://www.hks-power.co.jp/en/product_db/suspension/db/23945

For info on Supra HKS Hipermax IV GT Suspension Kit please go to http://www.hks-power.co.jp

For info on our full range of goods and services please go to http://www.tdi-plc.com