ST Suspensions ST XTA Coilover Kit BMW E9X M3 european auto source ST Suspensions ST XTA Coilover Kit BMW E9X M3 european auto source ST XA Coilover Kit 20 23 BMW M340i Kies Motorsports ST SUSPENSIONS ST X COILOVER KIT (WITH FIXED DAMPING) ST X By KW Coilover Suspension Kit BMW M135i M140i F20 F21. The ST X Coilover Suspension for the 2015 2016 BMW M235i was developed for the everyday driver who needs to hug the curves yet retain road comfort. Simple, uncomplicated road performance for those who just want to get in and drive. Add in our wide range of height adjustability; the ST X Coilover will look as perfect as it feels. ST X Coilover Kit deliver precise adjustment to your ride height and look of your car. We manufacture an adjustable spring perch made of durable and friction optimized polyamide composite material with a stainless steel insert. Thanks to the composite material corrosion is prevented between the strut and perch ensuring long lasting height adjustability. Galvanized zinc coated steel struts optimize corrosion protection for long lasting use.. We add a dust protection system to prevent unwanted dirt and particulate from coming in contact with the hardened chrome piston rod or getting into the valve packs. We reinforce the system with a multi layered pressure resistant sealing package, mono block guide system and a low friction piston band which works inside the pressure resistant internal damper housing. At ST Suspensions we do not accept compromises. As a matter of principle we rely on world class engineering delivered from KW for all our dampers. Why? To simply improve your driving experience! All ST X Coilover Kit are application specific for your car and perfectly adapted for everyday life. Standard Features ST X coilovers are the ideal mix of sporty yet simple. The dampers and spring rate come tuned by our vehicle dynamics engineering in Germany to perfectly match each vehicle specific application. ST coilovers are built by hand by the experts at KW in Fichtenberg, Germany. Each damper is tested on a shock dyno to verify it's making the proper forces before being put into the ST box. Composite spring perch made from wear resistant, friction optimized polyamide composite with an embedded stainless steel insert. The polyamide composite prevents oxidation while the stainless steel insert maximizes strength. Seamless Ride Height Adjustment ST's composite spring perch and unique trapezoidal thread pitch make ride height adjustability a breeze so you can dial in your preferred look. Elastomer Bump stop with integrated dust protection system prevents water and dirt particles reaching the piston rod and seals. The highly resilient bump stops act as dynamic load limiters while maintaining ride quality and durability. Galvanized steel housing for improved resistance to corrosion. Made in Germany 5 Year Limited Warranty Unlimited Mileage Specifications Part Number 1322000Q Part Name ST X Coilover Kit UPC 847691086599 Vehicle 2015 2016 BMW M235i Front Lowering Rate 0. 2 1. 2 in. Rear Lowering Rate 0. 0 1. 0 in. Ride Height Adjustable Yes Damping Adjustable No Front Spring Rates Progressive Rear Spring Rates 11. 25 Kg mm (630 lbs in) Notes At Vehicles Equipped with Electronic Damping, the Electronic Damping Control Needs to be Deactivated. Deactivation Kit KW Part No. 68510301. Vehicle Fitment 2015 BMW M235i 2016 BMW M235i