HKS Coilover Spring and Shock Assembly

HKS Hipermax Coilover Spring and Shock Assemblies

When it comes to coilover spring and shock assemblies that bridge the gap between track performance and street usability, few names carry more weight than HKS. Founded in 1973 in the shadow of Mount Fuji, HKS has spent over five decades refining suspension technology through real-world motorsport competition — and that heritage flows directly into every Hipermax coilover assembly the brand produces.

The Hipermax Lineup: Built for Every Driving Style

HKS organizes its coilover spring and shock assembly offerings under the well-regarded Hipermax series, with distinct tiers to match how and where you drive. The Hipermax S series focuses on superior street driving comfort with advanced damping technology, while the Hipermax R is purpose-built for circuit use with high-grip tires. The Hipermax R features a front camber adjustment mechanism adjustable up to approximately 4 degrees, and its rear damping force can be adjusted without removing the shock absorbers — a meaningful convenience for track-day regulars who dial in settings between sessions.

At the core of HKS coilover assemblies is a gas-charged monotube damper design. The threaded damper body — typically housed in an anodized billet aluminum lower mount — allows ride height adjustment that is fully independent of spring preload. This means you can set your ride height for aesthetics or aerodynamics without inadvertently stiffening or softening the spring rate, a key advantage over simpler coilover designs. Front assemblies are engineered with both a main spring and a tender spring, and OEM-like dust shields are included for long service life across all weather conditions.

Damping Adjustability and Tuning Depth

Damping adjustment on HKS Hipermax units is biased toward the rebound side, though adjustments do influence compression behavior as well, giving drivers a wide but intuitive tuning window. Whether you're chasing lap times at a local circuit or simply wanting a more composed ride on imperfect roads, the ability to fine-tune damping force without specialized tools makes the Hipermax system approachable for enthusiasts at every level.

HKS's suspension development is validated through real competition. The Hipermax R line, for example, has been tested with specific damping dial settings developed at circuits like Fuji Speedway, giving customers a proven baseline setup right out of the box. Vehicle applications span a wide range of performance platforms — from iconic Japanese sports cars to modern hot hatches — with fitment-specific tuning built into each kit.

Why Choose HKS for Your Suspension Upgrade?

HKS is a publicly traded company headquartered in Fujinomiya, Shizuoka, Japan, and remains one of the most recognized aftermarket brands globally. With engineering resources that span turbochargers, electronics, and exhaust systems in addition to suspension, HKS approaches coilover design as part of a total vehicle performance philosophy rather than as an isolated product. The result is a coilover spring and shock assembly that integrates predictably with other performance modifications, making HKS a natural choice for enthusiasts building a cohesive performance package.

Browse the full selection of HKS coilover spring and shock assemblies to find the Hipermax kit engineered for your specific vehicle, or explore the complete HKS brand catalog to see the full range of performance upgrades available.