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Flowmaster American Thunder Axle-Back Exhaust System Fits 2021-2025 Ford Bronco 2.3L/2.7L, American Thunder Axle-Back, Single Exit - 818121

Was: $588.95
Now: $469.95
SKU:
818121
Weight:
27.00 LBS
Shipping:
Calculated at Checkout
Flowmaster American Thunder Axle-Back Exhaust System Fits 2021-2025 Ford Bronco 2.3L/2.7L, American Thunder Axle-Back, Single Exit - 818121

Description

Enhance the sound, performance, and style of your Ford Bronco with the Flowmaster American Thunder Axle-Back Exhaust System. Engineered specifically for the daily-driven 2021–2025 Bronco equipped with either the 2.3L EcoBoost or 2.7L EcoBoost engine, this system delivers the ideal balance between a mild tone at idle and an aggressive exhaust note under throttle—without unwanted drone.

This system utilizes a tuned 60 Series–style muffler to improve exhaust flow, deepen the tone, and increase rear-wheel performance, with dyno-proven gains of up to 19 horsepower and 19 lb-ft of torque. Constructed from durable 3.00-inch mandrel-bent 16-gauge 409 stainless steel tubing, it maximizes longevity and flow efficiency. The system is finished with a polished 3.00-inch stainless steel tip that adds a bold, custom appearance to your Bronco.

All necessary hardware is included, and the system mounts using Flowmaster’s factory-style hangers for a straightforward bolt-on installation. Backed by Flowmaster’s Lifetime Limited Warranty.

Fitment (Separate Section — Required Format)

  • Fits 2021–2025 Ford Bronco

  • Fits models with 2.3L EcoBoost engine

  • Fits models with 2.7L EcoBoost EcoBoost engine

  • Axle-back, single rear exit configuration

Features

  • 3.00-inch mandrel-bent 16-gauge 409 stainless steel tubing

  • Polished 3.00-inch stainless steel exhaust tip

  • Tuned 60 Series–style muffler delivers aggressive/moderate exhaust tone

  • No drone during cruising

  • Rear-wheel dyno gains: up to 19 hp and 19 lb-ft

  • Factory-style hangers and full installation hardware included

  • Delta Flow technology enhances performance and reduces drone

  • Lifetime Limited Warranty from Flowmaster

Technical Specifications

  • Brand: Flowmaster

  • Category: Exhaust

  • Series: American Thunder

  • Sound Level: Aggressive / Moderate

  • Material: 409 Stainless Steel

  • Tip Finish: Polished

  • Tip Diameter: 3.00 IN

  • Tip Length: 4.75 IN

  • Tip Material: 304 Stainless Steel

  • Tip Shape: Round

  • Tip Edge: Slash Cut

  • Tip Wall: Single Wall

  • Tip Connection: Welded

  • Exhaust Tip Quantity: 1

  • Exit Style: Single Out Rear

  • Main Piping Diameter: 3.00 IN

  • Muffler Included: Yes

  • Muffler Series: 60 Series

  • Muffler Type: Reflection

  • Muffler Material: 409 Stainless Steel

  • Muffler Finish: Black High-Temperature Paint

  • Muffler Body Length: 13.50 IN

  • Muffler Body Width: 10.00 IN

  • Muffler Body Height: 5.00 IN

  • Muffler Overall Length: 34.00 IN

  • Muffler Inlet Inside Diameter: 3.00 IN

  • Muffler Inlet Outside Diameter: 3.13 IN

  • Muffler Inlet Connection: Slip-Fit

  • Muffler Outlet Diameter: 3.00 IN

  • Tail Pipe Outside Diameter: 3.00 IN

  • Pipe Color: Silver

  • Pipe Material: 409 Stainless Steel

  • Clamps Included: Yes

  • Hangers Included: Yes

  • Mount Type: Uses New Hangers (Included)

  • Mounting Bracket Included: Yes

  • Gasket / Seal Included: No

  • Valve Included: No

  • CARB Compliant: Yes

  • Prop 65 Chemical Names: Chromium (hexavalent compounds), Nickel (Metallic)

This American Thunder axle-back system delivers the ideal blend of sound, performance, and durability for any Bronco owner looking to upgrade their driving experience.