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. Mercedes-Benz SLK55 AMG 2010-2005; SLK280 2008-2006; SLK300 2011-2009; SLK350 2011-2005 What's Included: Bilstein B8 2005 Mercedes-Benz SLK350 Base Rear 36mm Monotube Shock Absorber Vehicle Fitment: 2005-2011 Mercedes-Benz SLK350 Base 2005-2010 Mercedes-Benz SLK55 AMG Base 2006-2008 Mercedes-Benz SLK280 Base 2009-2011 Mercedes-Benz SLK300 Base