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 2007-2004; 528i 2010-2008; 530i 2007-2004; 535i 2010-2008; 545i 2005-2004; 550i 2010-2006\nBMW 525i 2007-2004, 528i 2010-2008, 530i 2007-2004, 535i 2010-2008, 545i 2005-2004, 550i 2010-2006