Description
Overview
The Flowmaster Outlaw Axle-back Exhaust System is engineered to transform the sound and stance of the 2015-2023 Ford Mustang. Purpose-built for coupes and convertibles equipped with the 2.3L EcoBoost or 3.7L engine, this complete axle-back kit swaps out the restrictive factory rear section and replaces it with race-proven Outlaw mufflers, mandrel-bent tubing, and bold polished tips that deliver the unmistakable Flowmaster attitude.
At the heart of the system are a pair of Outlaw mufflers—the same race-proven design trusted for serious performance builds. These mufflers produce a very aggressive exterior sound level while keeping the interior tone moderate, so you get an intimidating presence at wide-open throttle without droning fatigue on the daily commute.
Design & Flow
The kit begins with 2.25-inch connections that mate easily to the stock mid pipe, then quickly expand to full 3.00-inch mandrel-bent inlet tubing. That smooth, mandrel-bent path feeds directly into the dual Outlaw mufflers for maximum flow, performance, and sound. Each muffler features a center inlet and center outlet, a 3.00-inch outlet diameter, and a compact 10.50-inch overall length, all finished with a black muffler body for a purposeful under-car look.
The system is capped off with large 4.00-inch highly polished stainless steel tips featuring an embossed logo, giving your Mustang the performance appearance to match its new voice. Silver pipe finish and a dual tail pipe layout complete the aggressive, factory-plus-attitude presentation.
Easy, Bolt-On Installation
Because the Outlaw axle-back mounts using the factory hanger locations, installation is straightforward and hassle-free—a job that can be tackled at home in the driveway with basic tools. There’s no need to modify or relocate hangers, making this an ideal upgrade for enthusiasts who want a big change without a shop visit.
- Race-proven dual Outlaw mufflers for aggressive exterior sound with a moderate interior tone
- 2.25-inch connections expand to full 3.00-inch mandrel-bent inlet tubing for maximum flow
- Large 4.00-inch highly polished stainless steel tips with embossed logo
- Center inlet / center outlet mufflers, 10.50-inch overall length, black muffler finish
- Uses factory hanger locations for easy, at-home installation
- CARB (California) compliant and covered by Flowmaster’s Lifetime Limited Warranty
Fitment
This axle-back system is specifically designed for 2015-2023 Ford Mustang coupes and convertibles with the 2.3L EcoBoost or 3.7L engine. Before ordering, confirm your model year and engine to ensure correct fitment. Please note this kit fits coupes and convertibles.
Whether you’re chasing a more assertive exhaust note, a cleaner rear-end look, or both, the Flowmaster Outlaw Axle-back delivers the performance sound and appearance you’ve come to expect from Flowmaster.
