Description
Overview
The Flowmaster Flow FX Cat-Back Exhaust System is engineered to upgrade the airflow, sound, and style of your 2017-2026 Ford F-250/F-350 Super Duty. Designed for trucks equipped with the 6.2L, 6.8L, or 7.3L engines, this complete cat-back kit is built using durable 409 stainless steel throughout, giving you long-lasting corrosion resistance and dependable performance under the demanding conditions Super Duty owners put their trucks through.
At the heart of the system is the Flow FX “straight-through” muffler, which delivers a moderate sound level while helping unlock maximum performance. The 3.50-inch mandrel bent pipes smooth the path of exhaust gas flow, reducing restriction from the cat-back to the tip. On the dyno, this system revealed maximum gains of +7 horsepower and +12 lb-ft of torque at the rear wheels.
Key Benefits
This is a bolt-on upgrade designed for the home mechanic. It uses all the existing factory hanger locations, so there’s no cutting or custom fabrication required for a straightforward fit. The kit includes installation instructions and all necessary hardware, making it a satisfying weekend project rather than a shop-only job.
Style is part of the package, too. The system exits out the side, behind the rear wheel, and finishes with a 5.00-inch black ceramic tip featuring an embossed logo for a custom, aggressive look that sets your Super Duty apart. Both the muffler and pipes carry a silver finish for a clean, factory-plus appearance underneath the truck.
- Durable 409 stainless steel construction throughout for lasting corrosion resistance
- 3.50-inch mandrel bent pipes for improved exhaust gas flow
- Flow FX straight-through muffler, 24.00-inch overall length, center inlet and center outlet, 3.50-inch outlet diameter
- Dyno-proven gains of +7 hp and +12 lb-ft at the rear wheels
- Single tail pipe with a 5.00-inch black ceramic tip and embossed logo
- Uses factory hangers with all hardware and instructions included
Sound and Performance
The moderate sound level strikes a balance many truck owners want: an assertive, purposeful tone without being overwhelming inside the cab or on the highway. Because the muffler uses a straight-through design, you get that improved sound alongside real performance gains rather than one at the expense of the other.
Fitment and Compliance
This cat-back system is designed specifically for 2017-2026 Ford F-250/F-350 Super Duty trucks with the 6.2L, 6.8L, or 7.3L engine. It is CARB (California) compliant and carries Emission Code 5, and it is backed by Flowmaster’s Lifetime Limited Warranty. Please note the California Proposition 65 warning applies to this product. Choose the Flow FX to add flow, style, and dyno-proven power to your Super Duty.
