Bilstein B8 Performance Plus dampers are a performance upgrade to OE dampers designed to be paired with aftermarket lowering springs. 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. B8 Performance Plus dampers are the ideal solution for pairing with a lowering spring for improved handling and sportier look with the added benefit of world-famous Bilstein quality. BMW 528e 1988-1982; 533i 1984-1983; 535i 1988-1985; 535is 1988; 633CSi 1984-1983; 635CSi 1989-1985; M5 1988 BMW 528e 1988-1982, 533i 1984-1983, 535i 1988-1985, 535is 1988, 633CSi 1984-1983, 635CSi 1989-1985