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The Bilstein B6 Performance 36mm monotube rear shock for 2003–2008 BMW Z4 (E85) is a direct-fit performance upgrade that pairs with factory springs to enhance handling and road-holding. Using Bilstein gas-pressure technology and application-specific valving, the B6 improves grip and dynamic control while maintaining day-to-day comfort and OE-level quality for replacement and performance refinement.
Bilstein 03-08 BMW Z4 (E85) B6 Performance Monotube Shock - Rear
