The Ksport Circuit Pro 3-Way Coilover Kit for Volkswagen Golf is our premium system for enthusiasts and professionals who demand maximum performance and durability. With years of engineering, testing and development, the Circuit Pro 3-Way Coilover system has been perfected in virtually every facet of motorsport, from drifting to time attack or track driving. . The system's uncompromising range of adjustment helps win on the trail while still being suitable for everyday riding. Spring rate(kg/mm) Front: 16 Rear: 18