This Arnott air suspension conversion kit is built with Eibach front and rear monotube sport shock absorbers custom valved for Arnott to provide your vehicle with the comfort and handling S-Class owners expect. Arnott's new design features steel springs made by Eibach in Germany. Arnott also includes a special patented Electronic Bypass Module (EBM) (U.S. Pat. No. 9,329,917) to disarm the Airmatic system and eliminate dash panel error lights.