Description
Overview
The Flowmaster Outlaw Cat-back Exhaust System is engineered for the driver who wants a genuinely aggressive exterior sound while keeping a moderate, livable tone inside the cab. Built specifically for the 2015-2020 Ford F-150, this bolt-on upgrade delivers the performance benefits Flowmaster is known for, all wrapped in durable 409S stainless steel construction that stands up to the elements mile after mile.
At the heart of the system is the aggressive Super 10 Series performance muffler, fed by a 3.00-inch mandrel-bent inlet tube for smooth, efficient flow. From there, dual 2.50-inch mandrel-bent tailpipes carry the sound and airflow back through the truck, finished with large 4.00-inch black ceramic coated stainless steel tips that feature an embossed Flowmaster logo for a clean, purposeful look.
Key Benefits
This is a complete, flanged cat-back package designed to bolt on at home. It arrives with the muffler included and all the necessary parts and hardware for a straightforward installation, so you can hear and feel the difference without a trip to the shop. The Outlaw name means an unapologetically aggressive sound level outside, balanced against a moderate interior sound so it stays comfortable on daily drives and long hauls.
- Durable 409S stainless steel construction with a silver pipe finish
- 3.00-inch mandrel-bent inlet tube feeding an aggressive Super 10 Series muffler
- Dual 2.50-inch mandrel-bent tailpipes for balanced flow
- Large 4.00-inch black ceramic coated stainless steel tips with embossed logo
- Flanged mount design and all required hardware included for an easy at-home install
- CARB (California) compliant, Emission Code 5
Choose Your Exit
Configure the system to match how you drive. Select rear exit routing that exits under the bumper for a muscular street stance, or choose the side exit that routes behind the rear tires — ideal if you regularly tow an RV, boat or trailer and want the tailpipes clear of your hitch and towing setup. Pick the configuration that best fits your truck and your towing needs.
Fitment
This Outlaw Cat-back is built for the 2015-2020 Ford F-150 equipped with the 2.7L, 3.3L or 3.5L EcoBoost, the 3.5L TiVCT, or the 5.0L engine. It fits all 2WD and 4WD configurations and wheelbases, with the exception of Standard Cab / Short Bed models. The dual-outlet layout and mandrel-bent piping are designed for a proper, easy fit right out of the box.
Note: This product carries a California Proposition 65 warning. A heat shield is not included with the system.







