MAX IV GT 20SPEC
IMPREZA WRX STI
IMPREZA WRX STI GVB

MAX IV GT 20SPEC

Code No. 80230-AF001A

*Discontinued.

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

 

 




▲The above photo is an item for GVF

 

 

Application

Engine EJ20(TURBO)
Model Year 10/07 - 14/08
Remarks  

Specification

  FRONT REAR
Damping force adjustment 30 steps 30 steps
Base valve - -
Height adjustable lower bracket
Upper mount Rubber 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)
〇 (4.7) 〇 (4.7)
Ride Height mm
  Factory *2 Test data Adjustable range
High - Low *3
Drivable range
High - Low *4
FRONT Ride height *1 661 659 683 ~ 625 683 ~ 625
Against stock -22 -24 0 ~ -58 0 ~ -58
REAR Ride height *1 651 680 ~ 615 680 ~ 615
Against stock -29 0 ~ -65 0 ~ -65

*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) 88 ( 9.0 ) 69 ( 7.0 )
Free height (mm) 220 170
Spring type Straight Barrel type Straight
Recommended range to change spring rate N/mm(kgf/mm) ±10 ( 1 ) ±10 ( 1 )

Specification of damper

  F R
Damping force (Rebound/Damping)N* 667 / 549 353 / 382
Default position of dial 15 15
Remaining damper stroke (Rebound/Damping)mm 47 / 66 60 / 59

* 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)
273 271 293 265 262 283 236
Spring
Set length(mm)
243 243 268 220 220 220
Length to ride hight
adjuster (mm)
33 31 53 0 39 60 13
Lever ratio 1.10 1.38

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



Test vehicle information

  F R
Vehicle weight kg 904 (900) 628 (590)
Tire size (Air pressure) kPa 245 / 40 - 18 ( 230 ) 245 / 40 - 18 ( 190 )
Wheel size 9.0 JJ × 18 inset 45 9.5 JJ × 18 inset 45
Alignment
(Toe/Camber)
Test data in 0 mm / -2°36' in 0 mm / -1°54'
Standard value in 0 ± 3 mm / 0°45' ± 0°45' in 0 ± 3 mm / -1°30' ± 0°45'

* Test data at HKS.


Parts List  * It may be changed without prior notice.



 


Point

New MAXIV GT 20 SPEC for GVF is the updated product based on the latest know-how from MAXIV GT.
Revising a spring rate, stroke amount and damping force deliver the smooth suspension moving.
It is achieved not only comfortable riding but also improved the control in sports driving and easy to feel the weight transfer of the vehicle.
Experience the advanced MAXIV GT
 
 
 
 
 
 
 



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