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Flowmaster
American Thunder Cat-Back Exhaust System Fits 2021-2025 Ford F-150 2.7L, 3.5L, 5.0L. American Thunder, Cat-Back, Dual Exit Stainless Steel Exhaust System Flowmaster
SKU: F00L 817979
Moderate — 2–4 hours
Description
Part #: 817979
Flowmaster introduces our new American Thunder stainless steel cat-back exhaust system for the 2021-2025 Ford F-150 with the 2.7L, 3.5L and 5.0L engines. This system uses a Super 40 series muffler for a deep powerful sound and increased performance.Maximum dyno gains of 11 HP and 10 LB.FT. at the rear wheels. Mandrel bent 409 stainless steel tubing is used for maximum exhaust flow and durability. The system has a 3.0-inch inlet pipe and dual 2.5-inch tailpipes with both side exit and rear exit options that allow you to customize the look of the kit. 3.5-inch polished stainless steel tips finish off the kit for a classic performance look. All of the necessary hardware is included and factory-mounting locations are used for an easy installation. Backed by Flowmaster's Lifetime Limited Warranty.Includes Both Rear and Side Exit Tailpipes so the Final Look can be CustomizedSuper 40 Series Performance Muffler Delivers a Deep and Aggressive Performance ToneUses the Factory Hanger Locations for an Easy InstallationClears the Factory Spare TireStainless Steel Construction adds Durability3.50-Inch Polished Stainless Steel Tips add a Classic Performance LookDelta Flow Technology Increases Performance and Reduces DroneMandrel-bent Tubing Maximizes Exhaust FlowMaximum Dyno Gains of 11 HP and 10 LB.FT. at the Rear WheelsLifetime Limited Warranty
Features:
- Includes Both Rear And Side Exit Tailpipes So The Final Look Can Be Customized
- Includes Both Rear and Side Exit Tailpipes so the Final Look can be Customized
- Super 40 Series Performance Muffler Delivers A Deep And Aggressive Performance Tone
- Super 40 Series Performance Muffler Delivers a Deep and Aggressive Performance Tone
- Uses The Factory Hanger Locations For An Easy Installation
- Uses the Factory Hanger Locations for an Easy Installation
- Clears The Factory Spare Tire
- Clears the Factory Spare Tire
- Stainless Steel Construction Adds Durability
- Stainless Steel Construction adds Durability
- 3.50-Inch Polished Stainless Steel Tips Add A Classic Performance Look
- 3.50-Inch Polished Stainless Steel Tips add a Classic Performance Look
- Delta Flow Technology Increases Performance And Reduces Drone
- Delta Flow Technology Increases Performance and Reduces Drone
- Mandrel-bent Tubing Maximizes Exhaust Flow
- Mandrel-bent Tubing Maximizes Exhaust Flow
- Maximum Dyno Gains Of 11 Hp And 10 Lb.Ft. At The Rear Wheels
- Maximum Dyno Gains of 11 HP and 10 LB.FT. at the Rear Wheels
- Lifetime Limited Warranty
- Lifetime Limited Warranty
Exhaust System - American Thunder - Cat-Back - 3 in Diameter - Dual Rear / Side Exit - 3-1/2 in Polished Tips - Stainless - Natural - Ford Fullsize Truck 2021-22 - Kit
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
MIA's Description
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Specifications
| Brand | Flowmaster |
| Part Number | F00L 817979 |
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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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