Add an aggressive new look to your 2015 Mustang with a set of H&R Super Sport springs. The Super Sport Springs feature all of the same features as the popular Sport Springs, but also provide additional lowering for those wanting a little more drop. The Super Sport Springs are designed to lower your Stang's center of gravity and reduce body roll for improved handling characteristics. With a progressive spring rate, your S550 will retain superior ride comfort for daily driving while closing up that unsightly fender gap! Pair it with a new set of wheels to really transform the look of your Mustang!