The Bilstein B8 Performance Plus series is a high-performance monotube gas pressure shock absorber specifically designed to be paired with lowering springs for improved handling and sporting comfort. Engineered for the BMW Z3 M models, this 46mm monotube shock delivers precision control and stability. Features include: Monotube gas pressure technology, application-specific valve settings, and a shortened stroke for optimized suspension travel. This SKU includes: 1x Rear Shock Absorber (Part Number: 24-027304). Recommended to be replaced in pairs.