Skip to product information
1 of 9


Flowmaster American Thunder Cat-Back Exhaust System Ford F-150 2.7L | 3.5L | 5.0L 2021+

Flowmaster American Thunder Cat-Back Exhaust System Ford F-150 2.7L | 3.5L | 5.0L 2021+

Regular price $889.95 USD
Regular price $989.00 USD Sale price $889.95 USD
Sale Sold out
Shipping calculated at checkout.

Flowmaster American Thunder Cat-Back Exhaust System Ford F-150 2.7L | 3.5L | 5.0L 2021+


SKU: 817979

Flowmaster® is a household name, and for good reason. They've built legendary exhaust systems and mufflers for decades, and now offer performance air intakes, catalytic converters, and headers to give your hot rod performance to match the iconic Flowmaster sound.

Flowmaster introduces our new American Thunder stainless steel cat-back exhaust system for the 2021-2022 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 Customized
  • Super 40 Series Performance Muffler Delivers a Deep and Aggressive Performance Tone
  • Uses the Factory Hanger Locations for an Easy Installation
  • Clears the Factory Spare Tire
  • Stainless Steel Construction adds Durability
  • 3.50-Inch Polished Stainless Steel Tips add a Classic Performance Look
  • Delta Flow Technology Increases Performance and Reduces Drone
  • Mandrel-bent Tubing Maximizes Exhaust Flow
  • Maximum Dyno Gains of 11 HP and 10 LB.FT. at the Rear Wheels
  • Lifetime Limited Warranty

Vehicle Fitment:

  • 2021 Ford F-150
  • 2022 Ford F-150
  • 2023 Ford F-150
  • 2024 Ford F-150


Product image for illustration purposes only. Actual product may vary.

NOTE: Sezzle Takes 2-3 Days to Process Your Order.

If your vehicle or part is not listed please call us or email us and we will shoot a quote right over to you 1(732)-329-7511 (No texts, please)

TEXT US FOR A QUOTE HERE: 1-347-833-7483


You can DM us on Instagram also for an instant response:

View full details