The Bilstein B6 2006 BMW Z4 M Roadster Front Left 36mm Monotube Strut Assembly is a high-performance suspension strut designed specifically for the BMW Z4 M Roadster. It features a 36mm monotube design that provides superior damping performance, and is constructed from high-quality materials for reliable performance and long-lasting durability. The strut is designed to provide a smooth, comfortable ride, while also providing superior handling and stability. It is easy to install and comes with all necessary hardware and instructions.