Bilstein B6 Performance (DampTronic) 36mm Monotube Suspension Rear Shock Absorber for 2013-2020 Mercedes-Benz SL550 (R231) eibach-single-coil-spring-rubber-insert SF Racing Sport Coilovers for

SF Racing Sport Coilovers for the 2014-2020 BMW M4 (F82/F83) are the best coilovers available for street-driven cars

0in) Spring Rate - Front 5

5 kg/mm Spring Size - Front 62-220-5K Spring Size - Rear 62-230-2

1999 BMW 3 Series RWD

Bilstein B6 Performance (DampTronic) 36mm Monotube Suspension Rear Shock Absorber for 2013-2020 Mercedes-Benz SL550 (R231) eibach-single-coil-spring-rubber-insert SF Racing Sport Coilovers forBilstein B6 Performance (DampTronic) Dampers to your 2013 2020 Mercedes Benz SL550 (R231) are a performance upgrade to OE Dampers designed to be paired with OE factory springs. All of the active features of the factory electronic suspension, along with the factory controls, will be retained with the installation of these Dampers. Each damper is rigorously tested for quality that meets or exceeds OE standards and features application specific valve