Description
Overview
The Flowmaster Flow FX Axle-Back Exhaust System is a bolt-on upgrade engineered specifically for the 2021-2026 Ford Bronco equipped with the 2.3-Liter or 2.7-Liter engine. Built around Flowmaster’s Flow FX series muffler, this axle-back kit delivers a deeper, more purposeful exhaust note while unlocking real, measurable performance at the rear wheels — a smart, straightforward way to transform how your Bronco sounds and drives.
On the dyno, this system produced maximum gains of 17 horsepower and 18 lb-ft of torque measured at the rear wheels. Those numbers come from a free-flowing design that uses 3.00-inch mandrel-bent 409 stainless steel tubing to maximize exhaust flow and long-term durability, so you get performance that holds up to the elements and hard use.
Sound & Style
The Flow FX muffler is tuned for an aggressive-to-moderate sound level, giving you a deep exhaust tone that stands out without being overbearing on the highway. Dual 4.00-inch black ceramic-coated tips finish the setup with a custom, aggressive look that complements the iconic styling of the Bronco, and the embossed tip logo adds a clean, factory-plus detail.
Key Benefits
- Deep, aggressive-to-moderate exhaust tone from the Flow FX series muffler
- Maximum dyno gains of 17 hp and 18 lb-ft at the rear wheels
- 3.00-inch mandrel-bent 409 stainless steel tubing for maximum flow and durability
- Dual 4.00-inch black ceramic-coated tips with an embossed logo for a custom look
- All necessary hardware and new hangers included for a straightforward install
- Uses factory mounting locations for an easy, bolt-on fit
Easy, Bolt-On Installation
Everything you need to get the job done is in the box. The kit includes the Flow FX muffler, dual tail pipes, and all necessary hardware, and it mounts using new hangers and factory mounting locations. That means no cutting or fabrication is required for a clean, direct-fit installation that most enthusiasts can handle at home. The muffler measures 25.00 inches in overall length with a side inlet and dual 3.00-inch outlets, feeding the dual tip layout.
Fitment
This axle-back system is designed for the 2021-2026 Ford Bronco with the 2.3-Liter or 2.7-Liter engine. It is CARB (California) compliant, making it a legal upgrade in emissions-controlled states. Please note the California Proposition 65 warning that applies to this product.
Backed by Flowmaster’s Lifetime Limited Warranty, the Flow FX Axle-Back Exhaust System combines proven Flowmaster tuning, durable stainless construction, and standout styling into one complete package. Choose the Flow FX to give your Bronco a bolder voice, added power, and a custom appearance that matches its capability.
