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.\nBMW 525i 2003-2001; 528i 2000-1997; 530i 2003-2001; 540i 2003-1997; M5 2003-2000\nBMW 525i 2003-2001, 528i 2000-1997, 530i 2003-2001, 540i 2003-1997, M5 2003-2000