Flowmaster 21-25 Ford Bronco 2.3/2.7L American Thunder Axle-Back Exhaust System

Looking for the perfect balance between a mild tone while cruising and at idle, but aggressive tone under throttle all while having no drone? The American Thunder axle-back exhaust system is perfect for the daily driven 2021-2026 Ford Bronco with the 2.3 or 2.7-liter engine. This system uses a tuned 60 Series style muffler for an aggressive to moderate exhaust tone and increased performance. Maximum dyno gains of 19 hp and 19 lb-ft. were measured at the rear wheels. 3.00-inch mandrel bent 409 stainless steel tubing is used to maximize exhaust flow and durability. A polished 3.00-inch stainless steel tip is used to add a custom look to this iconic vehicle. All of the necessary hardware is included and factory mounting locations are used for an easy installation. Backed by Flowmaster's Lifetime Limited Warranty. Fits 2021-2026 Ford Bronco 2.3L/2.7L, American Thunder Axle-Back, Single Exit 2021-2026 Ford Bronco with 2.3L and 2.7L Ecoboost engines. Fits 2 & 4-wheel drive, 2 & 4 Door Models.

• 3.00-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
• Includes complete hardware and factory styled hangers in the stock locations for an easy installation
• Delta Flow Technology Increases Performance and Reduces Drone
• A 3.00-inch polished stainless steel tips add a custom look
• Backed by Flowmaster's Lifetime Limited Warranty
• Delta Flow Technology Increases Performance
• No Drone

Upgrade your 2021-2026 Ford Bronco with the Flowmaster 818121 American Thunder axle-back exhaust system, engineered for 2.3L and 2.7L EcoBoost engines. Designed for daily driving, this system delivers a mild tone during cruising and at idle, then produces a more aggressive exhaust note under throttle without unwanted drone. Its tuned 60 Series-style muffler helps provide a balanced sound while supporting improved exhaust performance.
Constructed from 3.00-inch mandrel-bent 16-gauge 409 stainless steel tubing, the Flowmaster 818121 system is built to maximize exhaust flow and provide long-term durability. Dyno testing recorded maximum gains of up to 19 horsepower and 19 lb-ft. of torque at the rear wheels. Delta Flow Technology helps increase performance while reducing interior resonance, making this axle-back system suitable for both trail use and everyday driving.
A polished 3.00-inch stainless steel exhaust tip adds a clean, custom appearance to the Bronco’s rear profile. The system includes complete installation hardware and factory-style hangers designed to fit the original mounting locations for a straightforward installation. It is compatible with two- and four-wheel-drive configurations as well as two- and four-door models equipped with the 2.3L or 2.7L EcoBoost engine. The Flowmaster 818121 American Thunder axle-back exhaust is backed by Flowmaster’s Lifetime Limited Warranty.

Features:

• 3.00-inch mandrel-bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability

• Tuned 60 Series-style muffler provides a moderate-to-aggressive exhaust tone with reduced drone

• Delta Flow Technology increases performance and helps minimize unwanted interior resonance

• Dyno-tested gains of up to 19 horsepower and 19 lb-ft. of torque at the rear wheels

• Polished 3.00-inch stainless steel tip adds a custom appearance

• Complete hardware and factory-style hangers support installation using the original mounting locations

• Fits 2021-2026 Ford Bronco models with 2.3L or 2.7L EcoBoost engines

• Compatible with two- and four-wheel-drive, two-door and four-door configurations

• Backed by Flowmaster’s Lifetime Limited Warranty

Fitment:
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