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HKS Hipermax IV SP Suspension Nissan 350Z Z33 80250-AN005

MAX IV SP Code No. 80250-AN005

‰Ð_The above photo is an item for GRB.

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

Application ‹ÛÛ Specification
Engine VQ35DE, VQ35HR
Model Year 02/07 - 08/11
Damping force adjustment 30 steps 30 steps
Base valve - -
Height adjustable lower bracket 䄆 䄆
Upper mount Spherical bearing Spherical bearing
Inverted/Normal type Normal Normal
Damper/Spring layout Coilover Separated
Spring rate change at factory 䄆 䄆
Damping force adjustment with wire - 䄆
Helper spring
(Spring rate N/mm)
䄆 ( 19.8 ) 䄆 ( 19.8 )

Ride Height mm
  Factory *2 Test data Adjustable range
High - Low *3
Drivable range
High - Low *4
FRONT Ride height *1 667 638‹ÛۉÛÈ1 677 •__ 638 677 •__ 638
Against stock -10 -39‹ÛۉÛÈ1 0 •__ -39 0 •__ -39
REAR Ride height *1 677 644‹ÛۉÛÈ1 699 •__‹ÛÛ645 699 •__‹ÛÛ645
Against stock -22 -55‹ÛۉÛÈ1 0 •__ -54 0 •__ -54
*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) 137 ( 14 ) 157 ( 16 )
Free height (mm) 200 170
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* 2800 / 600 1200 / 350
Default position of dial 15 15
Remaining damper stroke (Rebound/Damping)mm 57 / 33 63 / 73
* 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)
485 471 491 471 350 320 368 315
Set length(mm)
236 236 236 236 - - - -
Length to ride hight
adjuster (mm)
48 34 54 34 37 24 51 20
Lever ratio 1.54 1.59(spg) , 1.18(dmp)
* Refer to the above explanation *3 of ride height information for drivable high and low limitations.

Test vehicle information
  F R
Vehicle weight kg 844 701
Tire size (Air pressure) kPa 225 / 45 - 18 ( 230 ) 245 / 45 - 18 ( 230 )
Wheel size 8 JJ ÌÑ 18 inset 30 8.5 JJ ÌÑ 18 inset 33
Test data 0 mm / -1å¡30' 0 mm / -2å¡30'
Standard value in 0•__2 mm / -0å¡40' å± 45' in 1•__3 mm / -1å¡35' å± 30'
* Test data at HKS.

Parts List * It may be changed without prior notice.

We have developed a sport damper of MAX IV SP for Z33 from the scratch. 
Plan 1. Changeable rear rate. 
Plan 2. Easy damping force adjustment
To have rear stability for turn-in, we setì 65 series-wound spring with helper and enough bump stroke. Also we set the rear damping force adjustment dial inside the car for fast and easy setting, so that you don‰۪t have to get your hands dirty (need interior works). We set it smooth but firm for the comfortable drive. It‰۪s tight but not uncomfortable and there isn‰۪t bad up and down movement. It also recovers fast.
Preferred dial setting
0-10: Circuit or high speed drive, 11 -20: Winding roads or highway, 21 ‰ÛÒ 30: Normal drive
We recommend spring rate of 14k for rear if you don‰۪t go to circuit. Set F16k/R18k for circuit drive. (Settings are for high-grip radial tires)
* Test tire (front & rear): 265/35-18
‰яModification for installation
‹ÄÈNeed a hole to put through the rear damping force adjustment cable.

This product is compatible with the following vehicles

Vehicle Make Vehicle Model Vehicle Variant From To Engine Notes
Nissan 300 Series 350Z 2003 2005 VQ35DE 3.5L Z33 - RWD Petrol
Nissan 300 Series 350Z 2005 2005 VQ35DE 3.5L Gran Turismo Z33 - RWD Petr
Nissan 300 Series 350Z 2005 2007 VQ35DE 3.5L Roadster Z33 - RWD Petrol
Nissan 300 Series 350Z 2005 2007 VQ35DE 3.5L Z33 - RWD Petrol
Nissan 300 Series 350Z 2005 2005 VQ35DE 3.5L Roadster Z33 - RWD Petrol
Nissan 300 Series 350Z 2007 2009 VQ35HR 3.5L Roadster Z33 - RWD Petrol
Nissan 300 Series 350Z 2007 2009 VQ35DE 3.5L Z33 - RWD Petrol
Nissan 300 Series 350Z 2007 2009 VQ35HR 3.5L Z33 - RWD Petrol
Nissan 300 Series 350Z 2007 2009 VQ35DE 3.5L Roadster Z33 - RWD Petrol
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