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The Bilstein B12 (Pro‑Kit) complete suspension kit for BMW 640i Gran Coupe (2013–2017) pairs Bilstein Performance dampers with Eibach Pro‑Kit springs to provide a fixed, moderate lowering between 24–40mm depending on application. Tuned per chassis with B8 Performance Plus dampers and progressive springs, the kit aims to improve stance and driving dynamics while retaining predictable control.
Bilstein B12 (Pro-Kit) 13-17 BMW 640i Gran Coupe Base L6 3.0L Front and Rear Suspension Kit
