Description

Restore OEM-level ride quality and roadholding to your Alfa Romeo Z1 (Roadster, 1989–1991) with this Bilstein B4 Front Shock Absorber (Part No. 21‑030505). Originally engineered for the BMW Z1/Roadster platform (1988–1991), the Z1 uses front strut housings with an outer diameter of 51 mm, matching the Bilstein B4 specification perfectly. This twin‑tube gas-pressure shock delivers consistent damping, long-term reliability, and direct-fit installation without modifying factory components. Designed for standard chassis (no lowering springs), it improves ride comfort, handling, and remains easy to fit, making it a practical upgrade over aging OEM dampers. Built in Germany with corrosion-resistant finishing and backed by Bilstein’s OEM-level quality.Reddit+15bsrtuning.com.au+15AUTODOC+15