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The Bilstein B12 (Pro-Kit) suspension kit for 2004 BMW 545i is a complete front-and-rear solution pairing Bilstein B8 Performance Plus dampers with Eibach Pro-Kit springs. Tuned for the application, it provides moderate lowering of roughly 24–40mm and progressive spring characteristics that enhance response, stability and predictable control while maintaining OE-style driving dynamics and safety reserves.
Bilstein B12 2004 BMW 545i Base Front and Rear Suspension Kit
