FEATURES:

• 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
• 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.
• 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
• 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
• 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
• 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.
• Dual PVS: Dual Preload Valve System - The rebound characteristics are refined for smoother response while suppressing unnecessary movement. To 
  realize the further-evolved FLAT RIDE CONCEPT of the new-generation HIPERMAX S, the system is optimized individually for each vehicle application. By optimizing damping force characteristics, a new dimension of driving comfort is achieved.
• WR Needle: Wide-Range Damping Adjustment Mechanism - The shape of the damping adjustment needle has been redesigned to vary oil flow more effectively, incorporating an increased relief passage and a needle profile with a wider range of adjustment. By expanding the adjustment range toward the softer side, greater flexibility in soft-setting tuning is achieved. From a wide selection of needles with different characteristics, the optimal specification is selected for each vehicle. This enables highly adaptable suspension settings that perform consistently across a broad range of driving situations.
• Advanced Bump Rubber Plus - The design retains its characteristic of engaging bump contact early in the suspension stroke, gradually increasing load in a controlled manner. With an expanded range of shapes now available, the optimal specification is selected from a broad lineup to match each vehicle 
  application.
• Monotube Damper Design - Continuing the HIPERMAX series tradition, a monotube damper design is employed. This structure separates the gas chamber from the oil chamber and allows the use of a largediameter piston, resulting in refined and highly stable damping force characteristics.

FITS:

2013-2020 Subaru BRZ, Scion FR-S, Toyota 86

WARRANTY:

1-Year Warranty

Built to a high-durability specification, the system is backed by a 1-year warranty against defects in materials and workmanship. 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.

Dust Boots and Stabilizer Links Now Covered Under Warranty

Dust Boots - The dust boots have been developed from the ground up with a carefully selected new material offering outstanding heat resistance, weather resistance, and ozone resistance. This significant improvement in durability over conventional designs makes the 1-year warranty possible. *1 Designed to protect the suspension even under harsh operating conditions, these are truly tough dust boots engineered for longterm reliability.

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 1-year warranty possible

*1 Tested in 2024 by the Japan Chemical Substance Evaluation and Research Organization (based on JIS K 6259-1).Static ozone degradation tests were conducted using Method A on both flexed components and elongated strip specimens. Performance may vary under actual operating conditions.