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The ST XTA coilover kit for 2003–2008 BMW Z4 (Z85) brings adjustable ride height and damper control to tune driving dynamics. It pairs a linear race spring system with adjustable dampers and aluminum unibal top mounts to refine steering feel and allow camber adjustment. Composite spring perches with stainless inserts prevent corrosion, while 16‑click rebound, shock‑dyno testing, dust protection and a damper setup manual help dial in the ride.
ST Coilover Kit 03-08 BMW Z4 (Z85)
