Mustang owners can get the most performance for their money with BBK CNC-series off-road and high flow cat x-pipes. From the early days of merged pipes used in circle track race applications, X-pipes have proved to be a great way to bolt-on more performance to most V8 applications. The unique high flow design merged junction on the BBK X-pipe delivers unrestrictive performance for the mildest to wildest Mustang applications. Fully Aluminized 2.5inch Diameter Tubing OEM Style Die-Stamped Flanges Direct Bolt-On Perfect Fit HP & Torque: 12-25 HP/20 ft lbs Torque