Includes KONI externally rebound adjustable sport inserts for E36 M3 and KONI standard adjustable rear shocks with Sport springs. Sport Springs lower your car about 1.2" in the front and 1.0" in the rear and are approximately 25-30% stiffer than stock. This kit offers enhanced control over stock suspension without a harsh ride. Add TCKR special rear shock mounts for improved handling over stock mounts. (This kit does not include rear shock mounts)