SR Performance Axle-Back Exhaust for 2011-14 Mustang GT - like new, only used for 3 months - removed in winter and haven't had a chance to get them power washed - bought from American Muscle by Balgonie, can deliver to Regina Features & Specs Classic Muscle Car Sound Improves Exhaust Flow for More Power Chambered Muffler Design Aluminized Steel Construction Three Inch Diameter Mandrel-Bent Tubing Four Inch Slant Cut Polished Exhaust Tips Simple Bolt-on Installation Fits 2011-2014 GT Mustang Models Brand SR Performance Exhaust System Type Axle-Back System Exhaust System Material Aluminized Steel Exhaust System Tip Finish Chrome, Polished Exhaust System Tubing Diameter 3.00 Inch Exhaust Loudness Moderate Sound and Power. Now you can give your Coyote powered Mustang the aggressive exhaust note of a true muscle car with a SR Performance Axle-Back Exhaust System. Specifically tuned to get the optimal sound from your 5.0L V8 engine, this Axle-Back features two chambered mufflers that will produce an aggressive rumble that your 2011-2014 GT Mustang should have had straight from the factory. Aluminized Steel Construction. SR Performance manufactures their Axle-Back from mandrel bent, 3-inch diameter, aluminized steel tubing for durability and corrosion resistance. This SR Performance Axle-Back exhaust system features two chambered mufflers that end with 4-inch polished stainless steel slant cut exhaust tips for impressive good looks and sound. Direct Bolt-On Installation. SR Performance engineered their Axle-Back Exhaust to be a direct upgrade replacement for your Mustangs factory rear axle-back exhaust. This Axle-Back Exhaust Kit easily bolts up in the stock location with no cutting, drilling or modifications required for a straight forward install that can be completed in about 2 hours. Application. This SR Performance Axle-Back Exhaust Kit is specifically designed to fit the 2011-2014 GT Mustang models equipped with the 5.0L Coyote V8 engine.