Designed by a joint engineering staff from Germany and the USA, the S1 coilover is built for the enthusiast thatis looking for an ideal balance of ride quality and performance. In the front the S1 coilover for the MK5/6 VW/Audi Group platform features a specially designed progressive springrate matched to a twin tube low pressure gas damper mounted in a new heavy silver zinc platedthreaded coilover housing that provides not only great handling, but also exceptionalcorrosion resistance. The rear features a progressive coil spring and adjustable threadedperch system with a specially tuned sport damper that ismatched to the lowering range of the coil/perch combination.