If you're looking to lower your Mustang while also improving your ride quality, you've come to the right place. Roush has been at the forefront of Mustang Racing for years and has designed their Roush Performance Lowering Springs with just the right combination of ride and handling. Rear jounce bumpers are also included with this kit. Roush has designed these springs to be used without having to upgrade or modify your existing shocks/struts. The part number for this item is and it fits 2005-2014 Ford Mustang V6 and GT V8 Models. They will lower your Mustang 1" in the front and 1.25" in the rear.