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HKS Hipermax MAX IV SP Nissan GT-R

HKS Hipermax MAX IV SP Nissan GT-R



The sport model to have a comfortable drive even in the winding road.

This “MAX IV SP” is the ultimate sport model for such a high grip radial tire. It will transfer the feelings straight to driver all kinds of information such as tire, road surface condition and traction. It’s a perfect street sport model suspension for people who love to drive fast but still want comfort.

Single Tube Damper Design
Mono tube dampers allow for more accurate and stable control and adjustment of dampening. Lower ride height and center of gravity gives a more stable ride.
Dust Boot
Protect the shaft from the flying stones.
PNE Coating
Using this special surface coating provides 5 times better durability over standard galvanising. This prevents build-up around the threads of the adjustment areas allowing for easier height adjustment.
M Shaft (Φ46 normal type)
With the new design of cylinder shaft since the HIPERMAX M-1, MAX IV increased the cylinder shaft size to have a firm damping even at a little stroke range by optimizing the oil pressure characteristic. We mainly adopted this to the rear damper that can have a better driving experience.
Adopted Pillow Ball Upper Mount
For more accurate and sharp steering.
New Design Needle
Newly designed needle has been used to revise the very low speed and middle and high speed dampening which is key to a comfort ride.
Reduction of Unsprung Weight
In order to reduce unsprung weight, bracket, ride height adjusters and lock nuts are made from aluminium. (Not for all vehicles)
30 Step Damping Force Adjustment
30 levels of dampening adjustment allow fine tune adjustment for street, circuit winding roads, highway, or the weight of the vehicle.

In stock


MAX IV SP Code No. 80250-AN001


80250 an001 kit
▲The above photo is an item for R35.
80250 an001The sport model to have a comfortable drive even in the winding road.


Application Specification
Engine VR38DETT
Model Year 07/12 – 16/06
Damping force adjustment 30 steps 30 steps
Base valve
Height adjustable lower bracket
Upper mount Spherical bearing Spherical bearing
Inverted/Normal type Normal Normal
Damper/Spring layout Coilover Coilover
Spring rate change at factory
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 *1 704 723 ~ 632 723 ~ 650
Against stock -19 0 ~ -91 0 ~ -73
REAR Ride height *1 715 732 ~ 664 732 ~ 689
Against stock -17 0 ~ -68 0 ~ -43
*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
Spring rate N/mm(kgf/mm) 157 ( 16 ) 118 ( 12 )
Free height (mm) 200 250
Spring type Straight Straight
Recommended range to change spring rate N/mm(kgf/mm) ±20 ( 2 ) ±20 ( 2 )
Specification of damper
Damping force (Rebound/Damping)N* 3000 / 410 900 / 360
Default position of dial 15 15
Remaining damper stroke (Rebound/Damping)mm 50 / 49 85 / 74
* The value of the damping force is at piston speed of 0.1m/sec.
Setting data
Default Test Drivable limit
High *
Drivable limit
Low *
Default Test Drivable limit
High *
Drivable limit
Low *
Length of
case (mm)
481 492 472 410 422 386
Set length(mm)
238 238 272 326 326 326
Length to ride hight
adjuster (mm)
59 70 16 26 41 2
Lever ratio 1.69 1.12
* Refer to the above explanation *3 of ride height information for drivable high and low limitations.


Test vehicle information
Vehicle weight kg
Tire size (Air pressure) kPa 285 / 35 – 20 ( 200 ) 285 / 35 – 20 ( 200 )
Wheel size 10 JJ × 20 inset 42 11 JJ × 20 inset 25
Test data 0 mm / -1°30′ in 2 mm / -1°30′
Standard value
* Test data at HKS.


Parts List * It may be changed without prior notice.
80250 an001 zu1 en80250 an001 zu2 en


More advanced version of very famous HIPERMAX III Sport09 which supported many records in the circuit racing.
We have tested in circuit as well as the street and could have improved stability of rear which HIPERMAX III Sport09 lacked a little. Therefore rear tires have better grounding and roll stiffness which results in improved rear traction and absorption at a high speed driving. Once you experience the new MAX IV SP, we are sure that you can feel the difference from the Sport09.
However we also set for a comfortable ride in the street.
MAX IV SP is the perfect for the circuit and high speed driving.



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