Description
The Bilstein B4 OE Replacement Rear Shock Absorber delivers factory-grade performance and comfort for your BMW 1 Series F20/F21 (2011–2019), including performance trims like the M135i and M240i. Engineered as a direct-fit replacement for standard suspension systems, it restores original ride dynamics and improves road control with Bilstein’s world-renowned gas-pressure technology.
Key features include:
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✅ Twin-tube gas-pressure technology: Ensures stable damping, reduced fade, and reliable traction under various driving conditions.
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✅ OE-level ride comfort: Matches the factory BMW valving for a smooth, quiet ride—even under performance loads.
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✅ Durable construction: Resistant to corrosion and wear with OEM-grade materials and Bilstein’s German engineering.
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✅ Direct bolt-on installation: Designed for quick and easy fitment with standard RWD setups (non-electronic suspension).
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✅ Compatible with M-Sport models: Works perfectly with M135i/M140i/M240i trims when using standard chassis setup.
Ideal for owners looking to refresh their suspension while retaining the comfort and feel of the original setup—whether for commuting, weekend drives, or mild sporty driving.
