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HKS Hipermax IV GT Suspension Nissan Silvia S14 & S15 80230-AN002

MAX IV GT Code No. 80230-AN002

‰Ð_The above photo is an item for ZN6.

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

Application ‹ÛÛ Specification
Engine SR20DE(T)
Model Year 99/01 - 02/08
Remarks Height data is based on S15(SR20DET).
Damping force adjustment 30 steps 30 steps
Base valve - -
Height adjustable lower bracket 䄆 䄆
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)
- 䄆 ( 19.8 )

Ride Height mm
  Factory *2 Test data Adjustable range
High - Low *3
Drivable range
High - Low *4
FRONT Ride height *1 630 ‰ � 677 •__ 596 677 •__ 619
Against stock -47 ‰ � 0 •__ -81 0 •__ -58
REAR Ride height *1 637 ‰ � 682 •__‹ÛÛ602 682 •__‹ÛÛ611
Against stock -45 ‰ � 0 •__ -80 0 •__ -71
*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) 59 ( 6 ) 49 ( 5 )
Free height (mm) 220 250
Spring type Straight Barrel type 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* 839 / 382 211 / 137
Default position of dial 15 15
Remaining damper stroke (Rebound/Damping)mm 32 / 81 79 / 85
* 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)
230 ‰ � 271 230 486 ‰ � 516 469
Set length(mm)
207 ‰ � 207 220 316 ‰ � 301 325
Length to ride hight
adjuster (mm)
30 ‰ � 71 17 171 ‰ � 201 145
Lever ratio 1.14 1.00
* Refer to the above explanation *3 of ride height information for drivable high and low limitations.

Test vehicle information
  F R
Vehicle weight kg 692 577
Tire size (Air pressure) kPa 225 / 40 - 18 ( 220 ) 235 / 40 - 18 ( 220 )
Wheel size 8 JJ ÌÑ 18 off 35 9 JJ ÌÑ 18 off 38
Test data - -
Standard value in 2 å± 1 mm / -1å¡00' å± 45' in 2.6 å± 2.6 mm / -1å¡25' å± 30'
* Test data at HKS.

Parts List * It may be changed without prior notice.

‹ÄÈIf you shorten more than the limit length, it‰۪s the limit of movable space for ABS harness for steering wheel operation.
‹ÄÈWe have developed the MAX IV on the comfort in riding, better damper characteristics and controllability of the vehicle from MAX III.
‹ÄÈWith our new inner design let you have improved roadholding and eliminated the uncomfortable push from the suspension.
‹ÄÈRecommended town drive dial is 25 steps and for sporty drive such as winding drive course is around 15 steps.
* Modification for installation
‹ÄÈNeed to make a hole for rear damping adjustment cable(rear interior)
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