Description
Overview
The Flowmaster Flow FX Exhaust System Kit is engineered specifically for 2021-2026 Ford F-150 trucks equipped with the 2.7L, 3.5L, and 5.0L engines. Built to deliver a serious upgrade over the restrictive factory setup, this cat-back exhaust system pairs proven Flowmaster engineering with a highly custom design developed in collaboration with Waldoch Craft. If you have been searching to shop for exhaust that combines real performance gains with an aggressive attitude, this Flow FX system delivers on both fronts.
At the heart of the kit is the Flow FX series muffler, tuned for a sound level that ranges from aggressive to moderate. Whether you want a bold tone that announces your truck or a more controlled note for daily driving, this performance exhaust hits the sweet spot. The system routes through 3.00-inch mandrel-bent 409 stainless steel tubing, ensuring maximum exhaust flow and long-term durability against corrosion and heat.
Performance & Sound
Flowmaster backs this exhaust system with real dyno numbers: max gains of 16 horsepower and 18 lb-ft of torque at the rear wheels. The full 3.00-inch main piping, 3.00-inch inlet, and 3.00-inch outlet work together to free up flow, while the custom 304 Stainless Steel Teardrop tip exits through the bedside in front of the tire for a distinctive, aggressive look. It is a car exhaust upgrade that looks as good as it sounds.
Key Highlights
- 3.00-inch mandrel-bent 409 stainless steel tubing for maximum flow and durability
- Flow FX series muffler with an aggressive-to-moderate sound level
- Max dyno gains of 16 hp and 18 lb-ft at the rear wheels
- Custom 304 Stainless Steel Teardrop tip exits through the bedside in front of the tire
- Single tail pipe with 3.00-inch outlet and silver pipe finish
- CARB (California) compliant — Emission Code 5
Easy, Bolt-On Installation
This exhaust system kit uses new hangers (included) along with all necessary hardware, and it mounts to factory locations for a straightforward installation. The muffler measures 20.00 inches overall with a 9.00-inch body width, 4.00-inch body height, and 14.00-inch body length, featuring center inlet and center outlet configurations. Everything you need to complete the swap comes in the box, making this a clean upgrade whether you are a seasoned installer or tackling your first exhaust pipe project.
Fitment
Designed for 2021-2026 Ford F-150 models with the 2.7L, 3.5L, or 5.0L engines. Made from 409 stainless steel with a natural-finish muffler and silver pipe color, this catback exhaust is built to last and backed by Flowmaster’s Lifetime Limited Warranty. Please note the California Proposition 65 warning applies.
