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HKS Hypermax 4 Coilover Kit

HKS Hypermax 4 Coilover Kit


Out of stock


The new Max IV sporty suspension.

Awesome sporty drive with great control and comfortable ride in the street. It’s perfect for daily street drive with style and performance. You and your passenger can have a comfortable ride even with a low-down.

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”

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 because of the optimized oil pressure characteristic. We mainly adopted this to the rear damper that can have a better driving experience.

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 or circuit.



FRONT                     REAR

Damping force adjustment                       30 steps                    30 steps

Base valve                                                   –                                –

Height adjustable lower bracket                  ○                                ○

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            –                                   –

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             650                                 ←                                               692 ~ 577                                                     692 ~ 623

Against stock              -42                                  ←                                                0 ~ -115                                                        0 ~ -69

REAR                                            Ride height *1             645                                ←                                                668 – 563                                                        668 – 602

Against stock              -23                                 ←                                                0 ~ -105                                                        0 ~ -66



*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.


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