CORSAâ??s catback exhaust systems for the 2015 Ford Mustang GT feature 3â?? stainless steel mandrel bent tubing and dual exit configuration which is finished off with 4.5â?? polished or black Pro-Series tips. These catback systems are labeled with CORSAâ??s â??Xtremeâ?? sound level which produces a deep growl at idle and screams in the high RPMâ??s but creates no drone during cruising thanks to CORSAâ??s RSC Technology. Patented RSC Technology allows CORSA to acoustically style the sound of your vehicle to give you the true voice of performance without the annoying drone while cruising. Straight through nonrestrictive system design maximizes airflow improving performance and fuel economy. All components; even clamps and hangers; of the system are constructed of premium grade stainless steel to ensure the look and sound of your CORSA system that wonâ??t change over the life of your vehicle. Proudly designed and manufactured in Berea OH USA. Quickly enjoy the CORSA sound with an easy bolt on installation. No welding needed and all hardware and detailed instructions are included. Limited LIFETIME warranty for as long as you own your vehicle.