Roush Mustang exhaust kits are perfect for adding more horsepower, and getting an aggressive muscle car sound. With a variety of kits to fit different years, applications, and bumper types, Late Model Restoration has you covered for Roush performance exhaust kits! Shop our selection of Roush cat backs, axle backs, and active exhaust systems to wake up your Mustang. Choose from round tips, square tips, and even quad tips to change up the rear of your Mustang. These kits fit 2005-2017 Mustang.