Description
Overview
The Flowmaster Outlaw cat-back exhaust system is engineered specifically for 2021-2026 Ford F-150 RCSB trucks equipped with the 2.7, 3.5, and 5.0-liter engines. Developed in collaboration with Waldoch Craft, this performance exhaust delivers a highly custom exit while keeping installation straightforward. If you’ve been searching to shop for exhaust upgrades that combine real dyno-proven power with an unmistakable street presence, this catback exhaust brings both to your F-150.
At the heart of the system is an Outlaw series muffler tuned for an aggressive sound level and increased performance. Built from durable 409 stainless steel with a silver pipe finish, the tubing resists corrosion and stands up to the demands of daily driving and hard use. The 3.00-inch mandrel-bent piping is designed to maximize exhaust flow, letting your engine breathe more freely from the muffler back through the tail pipe.
Key Benefits
This is a complete exhaust system kit, so everything you need to bolt on more attitude and airflow arrives together. Max dyno gains reach 21 horsepower and 25 lb-ft of torque at the rear wheels, giving you measurable performance you can feel every time you get on the throttle. The oval Outlaw muffler features a black finish, center inlet, and center outlet, all sized at 3.00 inches to keep the exhaust pipe flowing without restriction.
- 3.00-inch mandrel-bent 409 stainless steel tubing for maximum flow and long-term durability
- Outlaw series oval muffler with an aggressive sound level and 3.00-inch center inlet/outlet
- Max dyno gains of 21 hp and 25 lb-ft at the rear wheels
- Single tail pipe design with a 3.00-inch exhaust tip included
- New hangers included and factory-mounting locations used for an easy installation
- CARB (California) compliant with Emission Code 5
Options & What’s Included
Choose the Exhaust System configuration to receive the muffler, mandrel-bent piping, exhaust tip, and all necessary hardware in one kit. The muffler is included, the exhaust tip is included, and new hangers come in the box, so you have what’s required to complete the job. A heat shield is not included with this car exhaust kit.
Fitment
This exhaust system fits 2021-2026 Ford F-150 RCSB models with the 2.7, 3.5, and 5.0-liter engines. Because it uses factory-mounting locations, the single tail pipe layout installs cleanly without cutting or fabrication. Whether you’re comparing performance exhaust options like Borla exhaust, Corsa exhaust, Magnaflow exhaust, or Walker exhaust, this Flowmaster Outlaw catback delivers proven gains, aggressive tone, and stainless durability. It is backed by Flowmaster’s Lifetime Limited Warranty. Please note the California Proposition 65 warning applies.

















