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HKS Hipermax IV GT Suspension Nissan Skyline R34 GTR BNR34 & R33 GTR BCNR33 80230-AN007

MAX IV GT Code No. 80230-AN007

‰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 RB26DETT
Model Year 99/01 - 02/08
Remarks Normal(V-Spec diffuser installed at front and back)
Damping force adjustment 30 steps 30 steps
Base valve - -
Height adjustable lower bracket 䄆 䄆
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 - 䄆
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 *1 665 ‰ � 706 •__ 615 684 •__ 623
Against stock -41 ‰ � 0 •__ -91 -22 •__ -83
REAR Ride height *1 665 ‰ � 699 •__‹ÛÛ592 699 •__‹ÛÛ620
Against stock -34 ‰ � 0 •__ -107 0 •__ -79
*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) 78 ( 8 ) 69 ( 7 )
Free height (mm) 200 250
Spring type Straight 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* 961 / 206 657 / 196
Default position of dial 15 15
Remaining damper stroke (Rebound/Damping)mm 35 / 55 55 / 115
* 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)
289 ‰ � 305 269 492 ‰ � 526 474
Set length(mm)
182 ‰ � 181 200 297 ‰ � 297 324
Length to ride hight
adjuster (mm)
84 ‰ � 101 46 147 ‰ � 181 102
Lever ratio 1.11 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 - -
Tire size (Air pressure) kPa 265 / 35 - 18 ( 230 ) 265 / 35 - 18 ( 230 )
Wheel size 10.5 JJ ÌÑ 18 inset 10 10.5 JJ ÌÑ 18 inset 10
Test data out 1 mm / -3å¡54' in 4 mm / -3å¡45'
Standard value in 1 å± 1 mm / -0å¡50' å± 0å¡45' in 2.6 å± 2.6 mm / -1å¡05' å± 30'
* Test data at HKS.

Parts List * It may be changed without prior notice.

‹ÄÈWe have set it for comfort in everyday drive.
‹ÄÈTo reduce the attack on the body, we have set the lower rate.
‹ÄÈWhen driving mainly in the circuit or winding road, it is recommended to be used with increased rate of the spring.
‹ÄÈRecommended dial in town ride is the factory spring rate of 23 stage front and 18 stage for rear.
‹ÄÈIf your car is installed with rear diffuser and rear member color, the minimum vehicle height is less than 90mm even at the point of shipping.
‹ÄÈThe vehicle height data from other than the test is computational data.(The numbers does not guaranteeing the height)
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