The HKS Hipermax R Series coilovers are the culmination of coilover technology that HKS has developed over the past 9 years, offering enhanced vehicle handling, traction and comfort. They have achieved unrivaled performance that is unmatched by any other brand. Dual PVS: Dual Preload Valve System Features the Dual Preload Valve System originally designed for the HIPERMAX S. By carefully selecting valve shims for each vehicle model, the settings are tailored to the vehicle to provide direct handling and reliable stability. WR Needle: Wide range damping force adjustment mechanism The improved shape of the needle expands the oil relief channel. Each step of the 30 steps adjustment is now more prominent. Having softer adjustment options gives more options for street driving. ADVANCED BUMP RUBBER The advanced bump rubber newly featured for HIPERMAX S is utilized. The shape aims for an early bump touch, gradually damping the load and suppressing abrupt changes in movement. Single Tube System The Mono-Tube design of the HIPERMAX series is adopted. The structure allows the gas and oil chambers to be separated, and the use of a large-diameter piston provides high quality and stable damping force characteristics. Inverted Type Damper for Strut Type Firm rigidity against stress has been achieved. It works to the advantage of various performances when driving, and provides excellent handling and ride comfort. PNE Coating Prevents sticking due to rust, which is the bottleneck of full-length adjustable dampers. Also, the smooth surface reduces the force required for vehicle height adjustment. Pillow Upper Mount The genuine rubber upper eliminates unnecessary movement, making more precise and sharper handling. HKS suspension generates optimum damping force, delivers optimum traction in any driving situation and responds linearly to any road conditions to achieve both ride comfort and driving performance. Note: Rear suspension is a separate spring and shock setup