Description
Overview
The Flowmaster Outlaw Axle-back Exhaust System is engineered specifically for the 2018-2023 Ford Mustang GT coupes and convertibles equipped with the 5.0L engine. Built around a pair of race-proven Outlaw Series mufflers, this system delivers an aggressive exterior sound level with noticeable interior tone, giving your Mustang GT the deep, unmistakable voice that matches its performance attitude. It’s the perfect bolt-on upgrade for drivers who want their exhaust to announce itself the moment they hit the throttle.
Constructed from 3.00-inch mandrel-bent 409S stainless steel tubing, this axle-back system is designed for smooth, restriction-free flow and long-lasting durability. The mandrel-bent construction preserves consistent pipe diameter through every bend, while the 409S stainless steel resists corrosion for reliable performance mile after mile. The setup retains the factory resonator mid-pipe and utilizes the factory hanger locations, making installation straightforward without cutting or custom fabrication.
Sound, Style & Fitment
Flowmaster finishes the system with quad 4.00-inch black ceramic-coated tips featuring an embossed logo, delivering an aggressive look that perfectly complements the aggressive sound. The dual tail pipe configuration and center-inlet, center-outlet Outlaw Series muffler design (49.50 inches overall length, 3.00-inch outlet diameter) bring genuine race-bred engineering to the street. This system is designed for vehicles without active exhaust valves and is CARB (California) compliant, making it a smart, legal upgrade for emissions-conscious owners.
Key Highlights
- Direct fit for 2018-2023 Ford Mustang GT coupes and convertibles with the 5.0L engine (non-active-valve exhaust)
- Race-proven Outlaw Series mufflers for an aggressive exterior sound with noticeable interior tone
- 3.00-inch mandrel-bent 409S stainless steel tubing for optimized flow and durability
- Quad 4.00-inch black ceramic-coated tips with embossed logo for an aggressive appearance
- Bolts to factory hanger locations and retains the factory resonator mid-pipe for easy installation
- CARB (California) compliant — legal in all 50 states
Complete Kit — Everything You Need
This axle-back system arrives complete with all the necessary parts, hardware, and installation instructions, so you can get your Mustang sounding and looking its best without hunting down extra components. Because it uses the factory hanger locations and retains the stock resonator mid-pipe, most enthusiasts can complete the install in their own garage with basic hand tools.
Want even more sound and power? Pair this axle-back with Flowmaster’s Scavenger Series no resonator X-Pipe kit, part #817817, to further open up the exhaust note and unlock additional performance. Whether you run the Outlaw axle-back on its own or combine it with the X-Pipe upgrade, you’ll transform the character of your 5.0L Mustang GT with a system that backs up its bold looks with genuine Flowmaster attitude.
Warning: This product can expose you to chemicals known to the State of California to cause cancer and/or reproductive harm — California Proposition 65.
