Description
Overview
The Flowmaster American Thunder Axle-back Exhaust System is engineered for the driver who wants an aggressive exterior sound with all of the performance benefits you’d expect from Flowmaster. Built specifically for the 2018-2023 Ford Mustang GT with the 5.0L engine, this bolt-on system delivers a bold, unmistakable tone outside while keeping a moderate and pleasant interior tone at cruising speeds. It’s the ideal upgrade for enthusiasts who want their Mustang GT to be heard without sacrificing everyday drivability.
Constructed from durable 409S stainless steel, this axle-back system features 3.00-inch mandrel-bent tubing for smooth, efficient exhaust flow and maximum power potential. At its heart are two Super 44 series mufflers, the American Thunder series’ formula for aggressive exterior sound quality paired with a refined highway character. The system is finished with quad 4.00-inch polished 304 stainless steel tips featuring an embossed logo for a premium, factory-plus appearance.
Key Benefits
This complete kit includes all necessary parts, hardware and instructions for an easy, straightforward installation. It mounts using the factory hangers, so there’s no cutting or fabrication required to get that Flowmaster growl. The dual tailpipe configuration with offset inlet and dual outlet Super 44 mufflers (51.50-inch overall length, 3.00-inch outlet diameter) is designed to bolt right in and perform.
- Aggressive exterior sound with a moderate, pleasant interior tone at cruise
- 409S stainless steel construction with 3.00-inch mandrel-bent tubing
- Two Super 44 series mufflers for maximum power and sound quality
- Quad 4.00-inch polished 304 stainless steel tips with embossed logo
- Uses factory hangers for a true bolt-on installation
- CARB (California) compliant, Emission Code 5
Option & Media
This axle-back system comes complete as a kit, including both Super 44 mufflers, the polished stainless tips, and all mounting hardware and instructions needed to complete the job. The silver pipe finish and black mufflers combine with the polished tips to deliver a clean, purposeful look under the rear bumper. Note that a heat shield is not included with this configuration.
Fitment
Designed for the 2018-2023 Ford Mustang GT equipped with the 5.0L engine, and fits both Coupes and Convertibles. Please note: this kit will not fit vehicles equipped with the Active Performance Exhaust option. This product carries a California Proposition 65 warning and is CARB (California) compliant.
