Take your Ford Mustang S550/S650 (Fits all models and trims except S650 GT Performance Package) to the next level—down low—with Air Lift Performance rear air suspension. Designed to match the aggressive look and feel of today's Mustang, this rear kit ensures your stance is on point without compromising on comfort or handling. With air spring end caps crafted from silver-anodized T6061 aluminum and progressive-rate bellows over performance shocks, you'll drive low and look good doing it. Drop your Mustang S550/S650 up to 5.1 in. (129.54mm) from stock in the rear while retaining street-ability and comfort. Engineered for real-world conditions, our suspension components are torture-tested to over 1 million cycles in extreme climates. Backed by a limited warranty and Air Lift's commitment to support, this rear suspension system is built to perform and to last. Air Lift Performance has led the air suspension market for over 75 years. To ensure quality, all major suspension components are torture-tested for over 1 million cycles on our hydraulic test rigs under temperature extremes from -30°F to 150°F. Ready to redefine your ride? Find a dealer and experience the new standard in lowered Mustang performance.