Description
Overview
The Flowmaster Outlaw Cat-back Exhaust System is built for the driver who wants a bold, unmistakable presence from their Ford F-150. Engineered for 2015-2020 F-150 trucks equipped with the 2.7L, 3.3L, or 3.5L EcoBoost engines, this bolt-on system delivers an aggressive sound level both outside and inside the cab while providing the performance benefits Flowmaster is known for. It’s a complete kit that includes the muffler and all necessary parts and hardware, so you can transform your truck’s tone and flow in a single upgrade.
Sound & Performance
At the heart of the system is the race-proven Outlaw Series muffler, tuned to produce a deep, aggressive exhaust note that announces itself without hesitation. Paired with a large mandrel-bent 4.00-inch tailpipe, the Outlaw system keeps exhaust gases flowing smoothly for maximum performance and a commanding tone. Whether you’re cruising the highway or standing on the throttle, the sound is unapologetically bold.
Build Quality & Finish
Constructed from durable 409S stainless steel, this cat-back system is built to stand up to the elements and years of driving. The single tailpipe exits with a large 5.00-inch black ceramic coated stainless steel tip featuring an embossed logo, adding an aggressive finishing touch that matches the attitude of the exhaust note. The silver piping and mandrel-bent design reflect the quality you expect from an Outlaw Series build.
Key Highlights
- Race-proven Outlaw Series muffler included for an aggressive sound level inside and out
- Large 4.00-inch mandrel-bent single tailpipe for maximum flow and tone
- Durable 409S stainless steel construction
- 5.00-inch black ceramic coated stainless steel tip with embossed logo
- Uses factory hangers and includes all necessary parts and hardware
- CARB (California) compliant, emissions-legal bolt-on design
Easy, At-Home Installation
Designed for an easy fit, the Outlaw Cat-back system mounts using the factory hangers and includes all the hardware you need to complete the job at home. There’s no need for cutting or fabrication — this bolt-on system is engineered to slot right into place, making it a straightforward weekend upgrade for the DIY enthusiast.
Fitment
This system is custom built for 2015-2020 Ford F-150 trucks running the 2.7L, 3.3L, or 3.5L EcoBoost engine, and fits all 2WD and 4WD configurations. As an emissions-legal, CARB-compliant system, it’s a smart choice for drivers who want serious sound and flow while staying street-legal. The Flowmaster Outlaw Cat-back is also backed by Flowmaster’s Lifetime Limited Warranty for lasting peace of mind. Note: California Proposition 65 warning applies.









