Description
Overview
The Flowmaster Outlaw Axle-back Exhaust System Kit is engineered specifically for the 2018-2023 Ford Mustang GT coupes and convertibles equipped with the 5.0L engine and the Factory Active Performance Exhaust Option. This is a purpose-built performance exhaust that swaps out the restrictive factory section for a race-proven design, giving your car exhaust a dramatically more aggressive attitude both outside and inside the cabin. If you’ve been searching to shop for exhaust upgrades that bolt on without cutting or fabrication, this Flowmaster kit delivers a complete, ready-to-install solution.
At the heart of the system is a pair of Outlaw Series mufflers, tuned to produce a very aggressive exterior sound level with a noticeable interior tone. These mufflers feed into large 3.00-inch mandrel-bent 409S stainless steel tubing, which maximizes flow while providing the durability and longevity you expect from a premium exhaust system. The kit is finished with quad 4.00-inch polished stainless steel tips carrying an embossed logo, so your Mustang looks as bold as it sounds.
Key Benefits
Unlike a generic borla exhaust or magnaflow exhaust swap, this Outlaw axle-back is designed to work with your Mustang’s factory active exhaust hardware. A pair of high-quality valves accommodate the factory exhaust actuators, letting you open up the sound on demand when you really want to unleash it. Because the system uses factory hangers, installation is straightforward and can be completed at home with the included parts, hardware, and detailed instructions.
- Axle-back configuration with dual tail pipes for an aggressive, full-bodied exhaust note
- Pair of race-proven Outlaw Series mufflers (black finish) for aggressive exterior sound and noticeable interior tone
- 3.00-inch mandrel-bent 409S stainless steel tubing (silver pipe color) for high flow and long-term durability
- Quad 4.00-inch polished stainless steel tips with embossed logo
- Includes valves to reuse the factory exhaust actuators for on-demand sound control
- Uses factory hangers with center inlet and center outlet mufflers (49.50-inch overall length, 3.00-inch outlet diameter)
Options & Configuration
This is a complete kit that includes both Outlaw mufflers, the exhaust and tail pipes, and all necessary mounting hardware. The valve actuators are not included in the box because the system is designed to reuse your OEM actuators, keeping the factory active-exhaust functionality intact. No heat shield is included. This makes it a clean, focused catback-style axle-back upgrade for owners who want a true performance exhaust without unnecessary extras.
Fitment
Designed exclusively for 2018-2023 Ford Mustang GT coupes and convertibles with the 5.0L engine and Factory Active Performance Exhaust Option. The system is CARB (California) compliant with Emission Code 5. Note the California Proposition 65 warning. Covered by Flowmaster’s Lifetime Limited Warranty.
