Ford Mustang GT Performance Exhaust - Rear - Flowmaster American Thunder Axle-Back with Valves, Polished (2018–2023). A valved axle-back built for 5.0L Mustang GT models with the Factory Active Performance Exhaust, delivering adjustable tone and trusted Flowmaster performance.

This system matches race-inspired Outlaw series mufflers with 3.00-inch mandrel-bent 409S stainless tubing for strong flow, durability, and a tone that shifts from moderate with valves closed to aggressive when opened. Quad 4.00-inch polished 304 stainless tips add a purposeful finish, while integrated valves accept the factory actuators. It fits coupes and convertibles, uses factory hanger locations, and includes all hardware and detailed instructions for an at-home install. The straight-through design is engineered for responsiveness and is backed by a Lifetime Limited Warranty.

Features

• 2018–2023 Mustang GT 5.0L coupes/convertibles with Factory Active Performance Exhaust
• Outlaw series mufflers; valve-controlled tone
• 3.00-inch mandrel-bent 409S stainless tubing; full stainless construction
• Quad 4.00-inch polished 304 tips; uses factory hangers
• Includes hardware and instructions; Lifetime Limited Warranty

Questions or looking to plan an install? Call our experts at Texas 512-982-9393 or California 562-981-6800. We have shops in Austin, Texas and the Los Angeles, California area offering professional installation and customization services.

Thinking about multiple items? Contact us to discuss shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov