XForce Mustang Exhaust systems are the pinnacle of quality performance for a deep muscle car sound. Complete cat back or axle back kits available for 2005-2023 Mustang GT and Ecoboost models. XForce uses their own VAREX Mufflers for a unique exhaust sound for late model performance applications. The VAREX muffler allows the user to be in control of the sound. Authorized Dealer call 1-855-827-7223