HKS Hipermax S Coilover Kit – 2008-2014 Subaru WRX STi

$2,838.82$3,052.83

SKU: 80300-AF001x Category: Tags: , , , , , Brand:

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 centre 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.

Specification
EngineEJ25(TURBO)
Model Year14/** –
RemarksUSDM EJ256MT
FRONTREAR
Damping force adjustment30 steps30 steps
Base valve
Height adjustable lower bracket
Upper mountRubberRubber
Inverted/Normal typeInvertedNormal
Damper/Spring layoutCoiloverCoilover
Spring rate change at factoryPossiblePossible
Damping force adjustment with wire
Helper spring
(Spring rate N/mm)
○ ( 4.7 )○ ( 4.7 )
Ride Heightmm
Factory *2Test dataAdjustable range
High – Low *3
Drivable range
High – Low *4
FRONTRide height *1655675 ~ 627675 ~ 632
Against stock-200 ~ -480 ~ -43
REARRide height *1654680 ~ 604680 ~ 604
Against stock-260 ~ -760 ~ -76
*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
FR
Spring rate N/mm(kgf/mm)78 ( 8 )59 ( 6 )
Free height (mm)220170
Spring typeStraight Barrel typeStraight
Recommended range to change spring rate N/mm(kgf/mm)±20 ( 2 )±20 ( 2 )
Specification of damper
FR
Damping force (Rebound/Damping)N*971 / 412392 / 147
Default position of dial1515
Remaining damper stroke (Rebound/Damping)mm60 / 5364 / 52
* The value of the damping force is at piston speed of 0.1m/sec.
Setting data
FR
DefaultTestDrivable limit
High *
Drivable limit
Low *
DefaultTestDrivable limit
High *
Drivable limit
Low *
Length of
case (mm)
269278269253274235
Spring
Set length(mm)
249238272206206228
Length to ride hight
adjuster (mm)
2848544654
Lever ratio1.001.26
* Refer to the above explanation *3 of ride height information for drivable high and low limitations.

“Natural steering feeling” so that a driver can trace the line as desired was pursued as STI’s unique handling characteristic.
Focusing on driving stability during cornering to match the vehicle’s characteristics, the helper springs in the front and rear maintain the stroke amount on the extension side so the tires can continuously contact even on rough road surfaces.
Management of VPS improves the driving comfort and sportiness. Driving comfort can be maintained under long-distance driving much better than the stock suspension.
Utilizing the helper springs in both front and rear dampers enables to secure the stroke of the extension side as possible.
The default setting is the dial 15 so the suspension can actively work. For highly stability, set the dial to 20 to 25.
The alignment data shows the value when the camber adjusting bolt under the front strut is turned to the full negative side.
* This product was tested in the U.S.

Additional information

Weight24 kg
Dimensions80 × 50 × 30 cm
Pillow Ball Front Strut Mount?

No, Yes

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Applications

Models suitable for this product

MakeModelYearSubmodel
MakeModelYearSubmodel
SubaruImpreza2008 - 2014WRX STi
SubaruWRX STi2008 - 2014

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