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The Bilstein B4 rear twin‑tube shock absorber for a 1980 Audi 4000 Base is an OE replacement aimed at restoring factory ride quality and handling. Engineered to meet OE standards, the B4 brings back original comfort and vehicle control. Its twin‑tube construction and precise build deliver reliable damping and high reserves, providing consistent performance that mirrors the factory shock characteristics.
Bilstein B4 1980 Audi 4000 Base Rear Twintube Shock Absorber
