The Bilstein B8 Performance Plus series is a high-performance, monotube gas pressure shock absorber specifically designed to be paired with lowering springs. This 36mm Monotube shock offers improved safety and sportiness for your BMW E30, providing better handling and increased stability without sacrificing comfort. Features include: Monotube gas pressure technology, Bilstein upside-down technology, and precise handling under high loads. This product contains: 1x Shock Absorber (Part No: 24-020275), 1x Mounting Nut, 1x Bushing Set.