Explanation of the product Application chart

MAX IV GT Code No. 80230-AT002

▲The above photo is an item for USE20.

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

Application   Specification
Engine 2UR-GSE
Model Year 07/10 - 
Damping force adjustment 30 steps 30 steps
Base valve - -
Height adjustable lower bracket
Upper mount Rubber Rubber
Inverted/Normal type Normal Normal
Damper/Spring layout Coilover Coilover
Spring rate change at factory Possible Possible
Damping force adjustment with wire -
Helper spring
(Spring rate N/mm)
○ ( 19.8 ) ○ ( 19.8 )

Ride Height mm
  Factory *2 Test data Adjustable range
High - Low *3
Drivable range
High - Low *4
FRONT Ride height *1 670 687 ~ 628 687 ~ 635
Against stock -17 0 ~ -59 0 ~ -52
REAR Ride height *1 648 667 ~ 550 667 ~ 625
Against stock -19 0 ~ -117 0 ~ -42
*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) 157 ( 16 ) 98 ( 10 )
Free height (mm) 200 220
Spring type Straight Straight Barrel type
Recommended range to change spring rate N/mm(kgf/mm) ±20 ( 2 ) ±20 ( 2 )
Specification of damper
  F R
Damping force (Rebound/Damping)N* 1834 / 432 1285 / 235
Default position of dial 15 15
Remaining damper stroke (Rebound/Damping)mm 58 / 57 72 / 82
* 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)
395 407 393 384 397 368
Set length(mm)
255 255 277 284 284 284
Length to ride hight
adjuster (mm)
42 54 18 41 54 25
Lever ratio 1.46 1.44
* Refer to the above explanation *3 of ride height information for drivable high and low limitations.

Test vehicle information
  F R
Vehicle weight kg 943 769
Tire size (Air pressure) kPa 225 / 40 - 19 ( 250 ) 255 / 35 - 19 ( 250 )
Wheel size 8.5 JJ × 19 off 43 9.5 JJ × 19 off 45
Test data 0 mm / -2°18' in 3.8 mm / -2°06'
Standard value 0 ± 2 mm / -0°50' ± 45' 3 ± 2 mm / -0°45' ± 45'
* Test data at HKS.

Parts List * It may be changed without prior notice.

・We have improved the damping decay characteristics by inherit the big size main shaft from the M1 and also the design of niddle for MAX IV GT.
・Stock's rear doeesn't move smoothly and feels hard and bouncing. So we have made it better by smooth movement with comfort for the fun driving. For street drive, we have rated up and still has better ride than the stock by moving smoothly at the start. Secondly, steering got better with smooth roll and stability in the winding roads and fun to drive from street to circuit. And for the comfortable drive at a high speed crusing on the highway, we have tested from 100km to 150km and 200km to 250km range to analyze and check the gap for absorbability or flat characteristics to adapt the pitching and vertical G force. We have tested several times on this high speed drive. Enjoy the MAX IV GT that has the newest technology for the comfortable drive at the street driving to the highest speed drive.
*Tire is bigger than the IS, so if you lower the vehicle the front tire house’s inner cover and tire will interfere. To avoid this problem please set the height rate up.
*Please do not adjust the front case to shorter than 393mm, or the upper arm and body will interfere for full bump.
*Please do not adjust the rear case to shorter than 367mm, or the side brake wire might be damaged for full bump.
●Notice for installation
・Need a hole for rear damping adjustment cable(inside the trunk).
・When the spring interference occurs, you need to take out the rear inner fender.