Flow Fx Axle-Back Exhaust System Fits 2011-2014 Ford Mustang 3.7-Liter, Flow Fx Axle-Back 2.5-Inch Stainless Steel Exhaust System, 4.0-Inch Black Ceramic Tips, Dual Out Rear Exit - Flowmaster - 717877

Flowmaster introduces our Flow FX stainless steel axle-back exhaust system for the 2011-2014 Ford Mustang with the 3.7-liter engine. This system uses a Flow FX series muffler for a moderate to mild sound level and increased performance.

Mandrel bent 2.5-inch 409 stainless steel tubing allows for maximum exhaust flow and durability. The system uses larger 4.00-inch black ceramic-coated stainless steel tips for a custom look. Max dyno gains of 7 hp and 6 lb-ft at the rear wheels over stock. All of the necessary hardware is included, and factory-mounting locations are used for an easy installation. Backed by Flowmaster's Lifetime Limited Warranty.


FlowFX Series performance mufflers offers a moderate to mild sound level and increased performance

409 stainless steel construction delivers extra durability and improved long-term corrosion resistance

Max dyno gains of 7 hp and 6 lb-ft at the rear wheels

2.50-inch 16-gauge mandrel bent stainless steel tubing helps maintain maximum exhaust flow for better power

Includes all necessary hardware for an at home installation

4.00-inch black ceramic-coated stainless steel tips add a custom look to the vehicle

Uses factory hanger locations for easy installation

Lifetime Limited Warranty