This MBRP exhaust system is perfect for Mustang owners from 2011 - 2014 who want to boost their car's performance and sound. Whether you're cruising on the highway or taking your Mustang to the track, this exhaust system will enhance your driving experience. It's made of T409 Stainless Steel and has a 3 - inch dual muffler axle - back split rear design, which is easy to clean and offers great exhaust flow.