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. Twintube Strut Assembly What's Included: Bilstein Mercedes-Benz 14-16 E250/10-16 E350/13-16 E400/10-11 E550 Front B8 Series Strut Assembly Vehicle Fitment: 2010-2016 Mercedes-Benz E350 Base 2011-2013 Mercedes-Benz E350 Bluetec 2010-2011 Mercedes-Benz E550 Base 2014-2016 Mercedes-Benz E250 Bluetec 2015-2016 Mercedes-Benz E400 Base 2013-2015 Mercedes-Benz E400 Hybrid