HKS 80330-AF020 Hipermax S Full Coilover Kit

The HKS Hipermax S Full Coilover Kit (80330-AF020) represents the next generation of HKS street performance suspension. Born from nine years of development since the MAXIV GT, the Hipermax S series raises the bar in damping force characteristics, long-term durability, and refined exterior finish — all in pursuit of a new standard HKS calls "Driving Comfort."

This is not simply a carryover tune. Although the platform shares the same fundamental suspension geometry as its predecessor, HKS engineers fully re-developed the damping specifications to match the improved chassis rigidity of the application. The result is a coilover that delivers both supple everyday ride quality and confident, predictable handling when pushed harder.

Key Features:

• Single-Tube Monotube Damper Design — Separates the gas and oil chambers for a larger diameter piston, producing consistent, high-quality damping force across all conditions
• Pre-load Valve System (PVS) — Controls damping force with a smooth, linear feel throughout the entire adjustment range; gentle and steady from soft to firm
• Dual PVS & Improved Needle Jet — New to the Hipermax S series, dual PVS and a revised needle jet shape refine low-speed damping response and reduce friction for improved ride feel
• Inverted Front Shock Absorber (Strut) — Spreads lateral loads over a larger area for increased rigidity under high cornering loads or with larger wheel fitments; damper body mounts to the chassis to reduce unsprung weight
• 30-Step Damping Force Adjustment — Wide adjustment range allows tuning from a compliant daily-driver setup to a performance-oriented track setting
• Optimized Spring Rate Balance — Spring rates are carefully matched to the platform, with the rear rate set higher than the front to promote understeer-neutral handling and stability
• Strengthened Rubber Upper Mounts — Revised cross-section and material composition absorbs small road vibrations while providing a firmer, more direct feel than stock mounts
• Bump Stop Rubber Improvement — Updated bump stop rubber design improves behavior at full compression for a more controlled feel
• Low Friction Technology — Reduces internal resistance throughout the damper stroke for improved response to small road inputs
• "Kodawari" Exterior Finish — A Japanese philosophy of obsessive attention to detail and perfection applied to the visual design of every component
• 3-Year Limited Warranty — Backed by HKS's manufacturer warranty for peace of mind

The HKS Hipermax S coilover kit delivers an uncompromising balance of street comfort and driving confidence — engineered for enthusiasts who demand both performance and daily usability from their suspension.