The ST X coilover kit for 2000–2003 BMW M5 E39 provides a blend of sporty control and street comfort with broad ride-height adjustability. It uses a friction-optimized polyamide composite spring perch with stainless-steel insert to prevent corrosion, galvanized zinc-coated struts, elastomer bump stops and an integrated dust protection system. Dampers are vehicle-tuned, hand-built and dyno-tested by KW in Germany; a 5-year limited warranty applies.
ST Coilover Kit 00-03 BMW M5 E39