Fits: 1977–1978 BMW 630CSi 1978–1983 BMW 633CSi Bilstein34-002292Shocks and StrutsBilstein B6 Performance dampers are a performance upgrade to OE dampers designed to be paired with the OE factory spring. These dampers offer application specific valve settings with a monotube design to bring out the best handling performance of a vehicle. Each damper is rigorously tested for quality that meets or exceeds OE standards. B6 Performance dampers will provide improved safety and handling performance with the added benefit of world-famous Bilstein quality.Bilstein B6 Performance suspension strut cartridges are performance upgrades to your OE dampers, and they're designed to be paired with the original factory springs. These cartridges offer application-specific valve settings with a monotube design to bring out the best handling performance of your vehicle. Each damper is rigorously tested for quality that meets or exceeds OE standards. B6 Performance dampers will provide improved safety and handling with the added benefit of world-famous Bilstein quality.