The Bilstein B8 Performance Plus shock absorber is a high-performance pressure monotube damper specifically designed to be paired with lowering springs. This shock delivers sport-tuned handling characteristics while maintaining daily driving comfort. Engineered for the BMW F30 platform, it provides improved stability and enhanced safety. Each purchase includes (1) Rear Shock Absorber. Part Number: 24-264563. Technology: Gas Pressure Monotube. Recommended for vehicles with lowered suspension.