Improve the exhaust flow on your 2013-14 Mustang GT with this Flowmaster American Thunder axle back. Flowmaster American thunder axle backs provide maximum exhaust flow with an aggressive throaty sound. This cat back provides better acceleration and increased horsepower by reducing back pressure through the mandrel bent tubing and specially tuned mufflers.

This Flowmaster American Thunder axle back is designed from 2.75" mandrel bent stainless steel tubing for maximum exhaust flow and long lasting durability. For 2013-14 this system places the 4" polished tips in a more visually pleasing position under the restyled rear bumper.

This axle back includes all necessary hardware and instructions to make installation easy. The system is made in the USA and is covered by Flowmaster's limited lifetime warranty.