KW’s Variant 3 suspension for the F80/F82 M3/M4 offers a comfortable ride quality with progressive rate springs, a wide range of height adjustment, and adjustable compression and rebound damping. The damper housings are constructed from stainless steel for corrosion resistance and high strength. An EDC compatible model is available which includes a module to defeat the M3’s built-in electronic damping control, and prevent any check engine light when removing the system from the car.