Bilstein 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.\nMazda 3 2013-2004; Volvo C30 2011-2008; C70 2011-2006; S40 2011-2004; V50 2011-2005\nMazda 3 2013-2004, Volvo C30 2011-2008, C70 2011-2006, S40 2011-2004, V50 2011-2005