MACH Force-Xp 3 IN to 2-1/2 IN Stainless Steel Cat-Back Exhaust w/ Black Tip Ford Mustang 15-19 L4-2.3L (t)aFe is proud to introduce our Mach Force-Xp cat-back exhaust systems. In recent testing, this system produced +16 horsepower and +17 lbs. x ft. of torque on our in house dyno. This cat-back exhaust system utilizes 3in into 2-1/2in tubing with a clamp-on reduction tube to fit the stock connections. Remove them and combine with the aFe Power Twisted Steel down-pipes (P/N: 48-33017-HC or 48-33017-HN) for added flow and performance. This system incorporates dual, high-flow mufflers to improve performance across the power band while maintaining an aggressive sound. To finish off the exhaust, dual 4 diameter gloss black 304 stainless steel tips are included. This system includes hardware for a hassle-free installation.