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. Mercedes-Benz C230 2007-2002; C240 2005-2001; C280 2007-2006; C320 2005-2001; C350 2007-2006; CLK63 AMG 2009-2007; CLK320 2005-2003; CLK350 2009-2006; CLK500 2006-2003; CLK550 2009-2007 Mercedes-Benz C55 AMG 2006-2005, C230 2007-2002, C240 2005-2001, C280 2007-2006, C320 2005-2001, C350 2007-2006, CLK320 2005-2003, CLK350 2009-2006, CLK500 2006-2003, CLK550 2009-2007