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The ST X coilover kit for 2008–2013 BMW 1 Series E88 Convertible (128i/135i) delivers a street-oriented suspension upgrade with broad ride-height adjustability and tuned damper characteristics. Each application-specific kit includes a durable composite spring perch with stainless insert to prevent corrosion, galvanized strut housings, and dust protection to preserve piston rods and seals. The result is a practical mix of improved handling and retained daily comfort.
ST X-Height Adjustable Coilovers 08-13 BMW 1Series E88 Convertible 128i/135i
