Upgrade your Ford F-150 with the Flowmaster American Thunder stainless steel cat-back exhaust system, delivering a deep and powerful tone through a Super 40 Series performance muffler. Engineered for sound, performance, and durability, this system delivers dyno-proven gains of up to 11 horsepower and 10 lb-ft of torque at the rear wheels.

Constructed from 409 stainless steel and mandrel-bent for maximum exhaust flow, the system includes a 3.0-inch inlet pipe and dual 2.5-inch tailpipes with interchangeable rear and side exit options. Each kit finishes with 3.50-inch polished stainless steel tips for a classic performance look. The system installs easily using factory mounting locations and includes all required hardware. Backed by Flowmaster’s Lifetime Limited Warranty.

Features

• Includes both rear and side exit tailpipes for customizable appearance

• Super 40 Series muffler provides a deep, aggressive performance tone

• Delta Flow technology reduces interior drone and boosts performance

• Clears the factory spare tire

• Uses factory hanger locations for easy installation

• Mandrel-bent stainless steel tubing maximizes exhaust flow

• 3.50-inch polished stainless steel tips

• Stainless steel construction for long-term durability

• Dyno-proven gains of 11 HP and 10 lb-ft at the rear wheels

• Lifetime Limited Warranty

Specifications

• Brand: Flowmaster

• Category: Exhaust

• Product Type: Exhaust System

• Sub-Category: Exhaust and Tail Pipes

• Part Type: Exhaust System

• Type: Cat-Back

• Exhaust Series: American Thunder

• Sound Level: Aggressive / Moderate

• Clamps Included: Yes

• Clamping Type: Flat Band

• Inlet Type: Clamp-On

• Main Piping Diameter: 2.50 in

• Pipe Material: 409 Stainless Steel

• Pipe Color: Silver

• Exhaust Tip Quantity: 2

• Exhaust Tip Color: Silver

• Exhaust Tip Finish: Polished

• Exhaust Tip Shape: Round

• Exhaust Tip Diameter: 3.50 in

• Exhaust Tip Length: 13.00 in

• Exhaust Tip Material: 304 Stainless Steel

• Exhaust Tip Connection: Clamp-On

• Exhaust Tip Cut: Angled

• Exhaust Tip Wall: Single Wall

• Tip Logo: Embossed

• Exit Style: Dual Out Rear, Dual Out Side

• Muffler Included: Yes

• Muffler Series: Super 40 Series

• Muffler Type: Chambered

• Muffler Body Material: 409 Stainless Steel

• Muffler Body Shape: Oval

• Muffler Color: Black

• Muffler Finish: Black High-Temperature Paint

• Muffler Body Height: 5.00 in

• Muffler Body Width: 10.00 in

• Muffler Body Length: 10.25 in

• Muffler Overall Length: 16.50 in

• Muffler Inlet Inside Diameter: 3.00 in

• Muffler Inlet Outside Diameter: 3.13 in

• Muffler Outlet Diameter: 2.50 in

• Muffler Inlet Location: Center

• Muffler Outlet Location: Dual

• Muffler Outlet Quantity: 1

• Mount Type: Uses factory hangers

• Mounting Bracket Included: Yes

• Hangers Included: Yes

• Gasket or Seal Included: No

• Spring Bolt Kit Included: No

• CARB Compliant: Yes

• California Proposition 65: Yes

• California Proposition 65 Chemical Name: Chromium (hexavalent compounds), Nickel (Metallic)

Fitment 

Fits the following vehicles:

• 2021 Ford F-150 with 2.7L engine

• 2021 Ford F-150 with 3.5L engine

• 2021 Ford F-150 with 5.0L engine

• 2022 Ford F-150 with 2.7L engine

• 2022 Ford F-150 with 3.5L engine

• 2022 Ford F-150 with 5.0L engine

• 2023 Ford F-150 with 2.7L engine

• 2023 Ford F-150 with 3.5L engine

• 2023 Ford F-150 with 5.0L engine

• 2024 Ford F-150 with 2.7L engine

• 2024 Ford F-150 with 3.5L engine

• 2024 Ford F-150 with 5.0L engine

• 2025 Ford F-150 with 2.7L engine

• 2025 Ford F-150 with 3.5L engine

• 2025 Ford F-150 with 5.0L engine