Increase horsepower and torque through the entire RPM range with a Borla cat back exhaust. Borla′s cat back exhaust is made from 2.50″ mandrel bent, 300-series, austenitic stainless steel tubing and features multiple mufflers for different sound levels. Turn heads and put the distinctive Borla sound of power on your 2011-2014 Dodge Charger and Chrysler 300C R/T.