Unlock the full sound and performance potential of your 2021–2025 Ford F-150 with the Flowmaster American Thunder Cat-Back Exhaust System. Designed for the 2.7L, 3.5L, 5.0L, and 3.5L PowerBoost hybrid models, this system uses 3.00-inch mandrel-bent 16-gauge 409 stainless steel tubing to improve exhaust flow, durability, and throttle response.

The Super 40 Series muffler delivers a deep, aggressive-to-moderate exhaust tone while enhancing performance. Dyno testing shows gains of up to +18 horsepower and +14 lb-ft of torque at the rear wheels compared to the stock system.

Dual 4.50-inch black ceramic-coated stainless steel tips give the rear of the truck a bold, upgraded appearance that fills the factory bumper cutouts perfectly. Installation is simple thanks to factory-style hangers, factory mounting points, complete hardware, and included instructions. Backed by Flowmaster’s Lifetime Limited Warranty.

Key Features

• Fits gas and PowerBoost models equipped with factory dual exhaust
• Up to +18 hp and +14 lb-ft at the rear wheels
• 3.00-inch mandrel-bent 409 stainless steel piping
• Dual 4.50-inch black ceramic-coated stainless steel tips
• Super 40 Series muffler for aggressive-to-moderate sound
• Uses factory hanger locations for easy at-home installation
• Includes complete hardware and instructions
• Lifetime Limited Warranty

Specifications

• Brand: Flowmaster
• Proposition 65: Yes
• Chemical: Chromium (hexavalent compounds)
• CARB Compliant: Yes
• Category: Exhaust
• Clamping Type: Flat Band
• Clamps Included: Yes
• Exhaust Series: American Thunder
• Exhaust Tip Diameter: 4.50 in
• Exhaust Tip Finish: Black Ceramic Coating
• Exhaust Tip Material: 304 Stainless Steel
• Exhaust Tip Quantity: 2
• Exhaust Tip Shape: Round
• Exhaust Tip Connection: Clamp-On
• Exit Style: Dual Out Rear
• Main Piping Diameter: 3.00 in
• Pipe Material: 409 Stainless Steel
• Muffler Series: Super 40
• Muffler Type: Reflection
• Muffler Quantity: 1
• Muffler Material: 409 Stainless Steel
• Sound Level: Aggressive / Moderate
• Type: Cat-Back
• Tail Pipe Quantity: 2
• Tip Logo: Embossed
• Mounting Bracket Included: Yes
• Uses Factory Hangers: Yes
• Multiple dimensions listed exactly as provided

Fitment 

Fits the following vehicles equipped with factory dual exhaust:
• 2021 Ford F-150 2.7L
• 2021 Ford F-150 3.5L
• 2021 Ford F-150 5.0L
• 2021 Ford F-150 3.5L PowerBoost
• 2022 Ford F-150 2.7L
• 2022 Ford F-150 3.5L
• 2022 Ford F-150 5.0L
• 2022 Ford F-150 3.5L PowerBoost
• 2023 Ford F-150 2.7L
• 2023 Ford F-150 3.5L
• 2023 Ford F-150 5.0L
• 2023 Ford F-150 3.5L PowerBoost
• 2024 Ford F-150 2.7L
• 2024 Ford F-150 3.5L
• 2024 Ford F-150 5.0L
• 2024 Ford F-150 3.5L PowerBoost
• 2025 Ford F-150 2.7L
• 2025 Ford F-150 3.5L
• 2025 Ford F-150 5.0L
• 2025 Ford F-150 3.5L PowerBoost

Additional Notes:
• Works with factory dual-exhaust trucks only
• Cat-back system
• Includes all hardware for installation