Finally, a way to lower BMWs that have rear air suspensions! If you've always wanted to lower your X5 with air rear suspension, now you can. This kit includes a pair of lowering springs for the front and a pair of adjustable end links for the rear. These end links slightly modify the suspension geometry, which causes the self leveling system to believe that your BMW's rear end is riding to high, so it lets some air out of the suspension and voila!-the rear of the car is lowered to match the front. Please note: Only for vehicles with rear air suspension