Description
Overview
The Flowmaster Outlaw® Cat-back Exhaust System is engineered for the 2013-2014 Ford Mustang GT with the 5.0L engine, delivering the deep, powerful exterior sound that muscle car owners crave while keeping the interior sound level moderate for daily driving. Built around the race-proven Outlaw® series, this cat-back system brings together aggressive tone and genuine performance in one complete, ready-to-install package.
At the heart of the system are dual 3.00-inch mandrel-bent stainless steel tubes that flow into a Scavenger Series® X-pipe. This design maximizes exhaust scavenging for stronger performance and gives the 5.0L its deep, unique muscle tone. From the X-pipe, spent gases move into a pair of Outlaw® mufflers and exit through dual 3.00-inch mandrel-bent tailpipes.
Key Benefits
Flowmaster designed this system to hit the sweet spot between attitude and livability. The Outlaw mufflers produce an aggressive exterior note, while the engineering keeps in-cabin drone in check. Because it’s a cat-back configuration with a 3.00-inch inlet diameter and mandrel-bent tubing throughout, airflow stays smooth from front to back to support the performance gains you expect from Flowmaster.
Fitment & Installation
This exhaust is built specifically for the 2013-2014 Ford Mustang GT 5.0L and fits both Coupes and Convertibles. The dual tailpipes use the factory hanger locations for a clean, bolt-on fit, and they’re capped with large 4.00-inch polished stainless steel tips that complement the factory rear cutouts. Every kit includes all necessary parts, hardware, and detailed instructions for a straightforward installation.
Highlights
- Dual 3.00-inch mandrel-bent stainless steel tubing for smooth, consistent flow
- Scavenger Series® X-pipe for maximum performance and a deep muscle tone
- Race-proven Outlaw® mufflers included in the kit
- Dual tailpipes with large 4.00-inch polished stainless steel tips
- Uses factory hanger locations for an easy, bolt-on installation
- CARB (California) compliant with Emission Code 5
The system carries an aggressive sound level, a silver pipe finish, and dual tail pipe configuration, with the Outlaw muffler included as part of the kit. Note that a heat shield is not included, and this system is designed for 2WD applications. As with many performance products, it carries a California Proposition 65 warning.
Whether you’re chasing a bolder soundtrack, sharper throttle response, or the finished look of polished 4.00-inch tips peeking through the factory cutouts, the Flowmaster Outlaw Cat-back Exhaust System delivers a complete, well-engineered upgrade for your S197 Mustang GT.










