Made in the USA and engineered to last, for those seeking increased performance and better economy, MagnaFlow Touring Series Performance Exhaust systems deliver the smooth deep sound you want and the wide-open performance power you need. Our exhaust systems feature straight-through flow designs for the ultimate in unrestricted horsepower and torque for big power while maintaining exhaust efficiency. These systems are an engineered balance of interior and exterior noise levels and are tested against SAE j1169 standards. Touring Series Performance Cat-Back Exhaust System; 3 in.; Incl. Tubing/Resonator/5x8x18 in. Muffler/Dual 4 in. Round Tips; Straight Driver Side Rear Exit; Stainless; The Touring Series Stainless Performance Exhaust system delivers dyno proven power with a comfortable interior sound and performance exterior sound. Fitment: 2012 BMW 328i Base 2013 BMW 328i Base 2013 BMW 328i xDrive Base 2014 BMW 328i Base 2014 BMW 328i GT xDrive Base 2014 BMW 328i xDrive Base 2014 BMW 428i Base 2014 BMW 428i xDrive Base 2015 BMW 328i Base 2015 BMW 328i GT xDrive Base 2015 BMW 328i xDrive Base 2015 BMW 428i Base 2015 BMW 428i xDrive Base 2016 BMW 328i Base 2016 BMW 328i GT xDrive Base 2016 BMW 328i xDrive Base 2016 BMW 428i Base