The popular WRX S4 HIPERMAX S now features pillow upper mounts on the front, allowing for camber angle adjustment.
Our high-performance shock absorbers with large diameter single-cylinder pistons provide a high-quality ride even with the car lowered.
The damper has been set to move smoothly, absorbing small bumps in the road while generating a firm damping force for wavy roads and cornering turns, improving road compliance.
The HIPERMAX S is characterized by its dual preload valve system and wide range needle. Laser marking is used for the exterior, and spring insulators are standard equipment.
| FRONT | REAR | |
|---|---|---|
| Damping force adjustment | 30 steps | 30 steps |
| Base valve | - | - |
| Height adjustable lower bracket | 〇 | 〇 |
| Upper mount | Spherical bearing | Rubber |
| Inverted/Normal type | Inverted | Normal |
| Damper/Spring layout | Coilover | Coilover |
| Spring rate change at factory | Impossible | Impossible |
| Damping force adjustment with wire | - | - |
|
Helper spring (Spring rate N/mm) |
- | 〇 (19.8) |
Single Tube Damper Design
- The new HIPERMAX S series continues to employ the single-tube structure.
- The advantage of this structure is to be able to provide the gas and oil chamber separately, and then it allows to use of a large diameter piston. As a result, a quality and stable damping force is gained.
Inverted Shock Absorber (Strut)
- Large lateral forces are spread over a larger area increasing rigidity under high loads or with larger wheels.
- Damper is attached to body side reducing un-sprung weight for improved handling.
Dual PVS
- The Pre-load Valve System, introduced in the previous MAX IV GT 20 Spec,S-Style L,S-Style C, created a remarkable difference to handling performance. This has been further refined to introduce
- High speed damping is reduced while keeping unnecessary movement to a minimum.
WR Needle： Wide range damping force adjustment mechanism
The improved shape of the needle expands the oil relief channel. Each step of the 30 step adjustment is now more prominent. Having softer adjustment options gives more options for street driving.
ADVANCED BUMP RUBBER（Evolution of Bump stop rubber)
For HIPERMAX S, a further improved “ADVANCED BUMP RUBBER” was developed which pursues further softness and also shorter variations deliver a wide range of options for a variety of cars delivers a natural and smooth experience.
PNE Coating
HKS previously introduced SNOW EDITION versions to combat corrosion head on. The result of this development was PNE coating delivering 5x better durability compared to standard galvanizing.
Strengthened Rubber Upper Mount
Strengthened rubber upper mount is able to absorb small body vibrations whilst tightening up the mount over stock. Revised cross sectional design and material composition balance comfort and performance.
"KODAWARI" of Exterior
The aluminum top mount is chamfered by machining to enhance the beauty of the product.Delivering detail and quality which was not previously available through previous printing methods.
Peace of mind with 3 years warranty
The internal structure of the HIPERMAX IV GT series has been reviewed in HIPERMAX S to deliver a 3 year warranty over the existing 1 year.Extensive in-house durability testing and development have led to improved correlation between test bench and real road data. Additionally, in-house manufacturing allows for quality control of all components, providing the necessary evidence to confidently offer the 3-year warranty.
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