Multiple U.S. Warehouse LocationsBroken ApexFree shipping on qualified orders over $100*
The Bilstein B4 rear twin-tube shock is an OE-replacement damper for 2001–2006 BMW M3 models, engineered to restore original ride quality. Its twin-tube construction meets or exceeds OE standards to return factory comfort, handling and safety. Built with precise construction and high power reserves, the B4 is a direct-fit option for drivers seeking to renew original suspension performance.
Bilstein B4 01-06 BMW M3 Base Rear Twintube Shock Absorber
