HKS Max 4 SP JZA80 Full Kit

SKU: 0QKHV | MPN:  80250-AT002
Sale price$1,883.50 USD Regular price$1,980.00 USD
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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 (?46 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.

Specification:

  FRONT REAR
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 )

Kit Information

  • Spring of Full Kit
  F R
Spring rate N/mm(kgf/mm) 216 ( 22 ) 157 ( 16 )
Free height (mm) 170 200
Spring type Straight Straight
Recommended range to change spring rate N/mm(kgf/mm) ±20 ( 2 ) ±20 ( 2 )
  • Specification of damper
  F R
Damping force (Rebound/Damping)N* 1600 / 450 800 / 400
Default position of dial 15 15
Remaining damper stroke (Rebound/Damping)mm 37 / 62 ( 12 ) 59 / 77 ( 27 )
  • Setting Data
  F R
Default Test Drivable limit
High *
Drivable limit
Low *
Default Test Drivable limit
High *
Drivable limit
Low *
Length of
case (mm)
364 362 390 362 349 346 368 346
Spring
Set length(mm)
209 ? ? 219 264 ? ? 272
Length to ride hight
adjuster (mm)
42 40 68 30 94 91 113 83
Lever ratio 1.78 1.31
Point
Sports type suspension design based on MAX ? GT for high-grip radial tires is available for JAZ80 Supra.
The product has been designed through the full use of HKS' latest technologies. To determine the final specification, extensive product testing was performed to ensure compatibility in both high ride quality for everyday driving and better handling for circuit driving. A new valve combined with the latest piston design and an all new low resistance and compliant bump rubber all work together to produce a ride which is at a new level from previous designs. While unnecessary movement is minimized on the high ways or winding roads, the smoothness on gaps and bumps on the road maintains high driving comfort and excellent grounded feeling, which invites drivers step on the accelerator with confidence. The product was tested on the public roads, which were not only the smooth surface roads but also rough and undulating surface roads, and Fuji International Speed Way to finalize the settings.
Under everyday driving conditions, its proper damping force to the piston speed enables the damper movement to be soft and obedient; but reliable damping is provided in necessary condition. The gentle and non-fluffy vehicle movement is provided as well. The damper movement is obedient and smooth even on gaps and bumps on the highways or winding roads.
For circuit driving, making a full use of the tires' performance by smooth stroke was focused on. The movement with adequate damping characteristics enables more aggressive driving with better ground-contact feeling in the critical area of cornering. The stability in rear upon entering a corner, control performance in the critical area of cornering, traction and controllability at start were examined during the development process, and feedback by time measuring was conducted to contribute to time attack. 
Newly designed bump rubbers are included, and this bump rubbers act as low resilient sub-springs assisting at bumps. The assist amount can be adjusted by changing the case length.
The default setting is focusing on easy handling. To reduce the vertical movement of the rear at gaps, etc., extend the case length approximately by 5mm.
To adjust the vehicle height, change the case length. Only when changing the point where the bump rubber touches the case, change the ratio of the case length and thread length.
The value in ( ) of the compression stroke is the point where the bump rubber touches the case.

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