Description
Overview
The Flowmaster® American Thunder cat-back exhaust system is engineered specifically for the 2021-2026 Ford F-150 equipped with the 3.5-liter PowerBoost. As a complete catback exhaust system, it replaces the restrictive factory piping from the catalytic converter back, delivering improved exhaust gas flow, a purposeful sound, and a factory-simple bolt-on fit. If you’ve been searching to shop for exhaust upgrades that transform your truck without cutting or fabrication, this Flowmaster kit is built to make that job straightforward.
Manufactured from durable 409 stainless steel tubing and fully mandrel bent, every exhaust pipe in this system is shaped to maintain a smooth, consistent diameter through each bend. That mandrel-bent construction preserves flow where crush-bent tubing would choke it, helping your F-150’s PowerBoost breathe more freely for maximum performance. A specially tuned resonator dials in the acoustics, producing a deep, moderate to mild sound level that adds character without droning inside the cab.
Key Benefits
This American Thunder performance exhaust is designed as a true weekend project. It uses all the existing factory hanger locations and includes installation instructions plus all the necessary hardware, so an at-home install is well within reach for most owners. The silver 409 stainless tubing resists corrosion for the long haul, while the included muffler and tuned resonator work together to deliver that signature Flowmaster tone.
- Direct-fit cat-back exhaust system for the 2021-2026 Ford F-150 3.5L PowerBoost
- Durable 409 stainless steel tubing, mandrel bent for better exhaust gas flow
- Specially tuned resonator produces a deep, moderate to mild sound level
- Muffler included; finished with a 5.00-inch black ceramic coated stainless steel tip
- Uses all existing factory hanger locations for a bolt-on, at-home installation
- CARB (California) compliant and backed by Flowmaster’s Lifetime Limited Warranty
Style & Finish
The system is capped with a 5.00-inch black ceramic coated stainless steel tip, adding aggressive style to the rear of your truck while complementing the silver piping. Whether you compare it to a Borla exhaust, Corsa exhaust, MagnaFlow exhaust, or Walker exhaust, this Flowmaster American Thunder car exhaust brings a distinctive look and sound backed by a proven name in performance exhaust.
Fitment
Confirm your F-150 is a 2021-2026 model with the 3.5-liter PowerBoost before ordering. This kit is CARB (California) compliant, includes the muffler, and does not include a heat shield. Please note the California Proposition 65 warning applies. With every clamp and instruction included, upgrading from the factory exhaust pipe to a full Flowmaster exhaust system is an accessible way to unlock better flow, a stronger note, and lasting durability.
