1. Aluminum Upper Mounts

The aluminum upper mounts feature a carefully selected shot-blasted finish. Extensive prototyping was carried out to achieve a refined, matte texture that delivers a calm and premium appearance. To provide a more controlled feel than the factory upper mounts, reinforced rubber is used to strike the ideal balance between firmness and compliance. This helps absorb fine body vibrations, contributing to smooth, supple driving comfort. Depending on vehicle characteristics, both pillow-ball upper mounts and reinforced rubber mount options are available.

2. Dedicated Springs

The springs are manufactured using a high-grade material not found in standard industry specifications. Cold-formed in-house at HKS facilities, they deliver exceptional quality, consistency, and long-term durability. In addition, the spring rate is now clearly printed on each spring, providing improved identification and ease of setup.

3. Valve Shims

High-quality, Japan-made valve shims are used to ensure consistent performance. A special surface treatment is applied to prevent shim adhesion, allowing smooth operation and stable behavior. This design enables precise control of oil flow under all operating conditions, delivering reliable damping performance in any environment.

4. Inverted Monotube for Strut-type Applications

For strut-type suspensions, an inverted monotube design is employed to robustly support the loads acting on the suspension. This structure enhances rigidity and stability under driving loads, contributing positively to overall performance. As a result, the suspension delivers superior handling precision while maintaining excellent driving comfort across a wide range of driving conditions.

5. Spring Insulator

As a suspension spring compresses and extends, it is constantly subjected to rotational forces. If resistance is present, the spring cannot perform as intended. By incorporating a spring insulator, these rotational forces are relieved, allowing the spring to move freely and ensuring smooth, consistent compression and rebound.

6. PNE Coating

The PNE coating prevents thread seizure caused by corrosion—one of the common issues with full-length adjustable suspension systems. Its smooth surface finish also reduces friction, requiring less force when adjusting ride height.

3-Year / 60,000 km Warranty & Rebuildable Design

Built to a high-durability specification, the system is backed by a 3-year or 60,000 km warranty and is fully rebuildable. By expanding in-house development capabilities and introducing dedicated durability testing equipment, HKS is now able to conduct quantitative evaluations and establish strong correlation between bench testing and real-world vehicle testing. After successfully passing rigorous bench durability tests, the suspension has also completed over 60,000 km of real-world driving validation, providing clear internal evidence of enhanced durability. HKS takes pride in its fully integrated in-house production system, where strict quality control is ensured at every stage—one of the greatest advantages of complete in-house manufacturing.

NEW Stabilizer Links

Designed to achieve geometry optimized specifically for HIPERMAX S, the new stabilizer links feature ball joints that significantly reduce friction at the joint interface. This allows the suspension to move freely and smoothly, minimizing resistance and enhancing overall suspension response. The durability of the boot section is equivalent to that of OE components, making the 3-year / 60,000 km warranty possible.