Description
Overview
The Flowmaster American Thunder Axle-back Exhaust System is built for the driver who wants an unmistakably aggressive tone paired with the performance benefits that carry the Flowmaster name. Engineered for the 2015-2017 Ford Mustang GT with the 5.0L engine, this bolt-on, emissions-legal system delivers a deep, powerful sound both inside and outside the car without sacrificing everyday drivability. It fits both coupes and convertibles, making it a versatile upgrade across the GT lineup.
At the heart of the system is a pair of Super 44 Series performance mufflers, tuned to produce the aggressive yet moderate sound level American Thunder is known for. The system routes 3.00-inch mandrel-bent tubing into the Super 44 mufflers and out through 3.00-inch tailpipes for maximum flow and a rich exhaust note. Every piece is constructed from durable 409 stainless steel to stand up to the demands of the road.
Key Benefits
This axle-back setup is designed to transform the character of your Mustang GT with a straightforward installation. As a bolt-on system, it includes all necessary parts and hardware, and the flanged mount design makes for a clean, secure fit. The result is a system that looks as good as it sounds, finishing off the rear of the car with large 4.00-inch polished stainless steel tips featuring an embossed Flowmaster logo for a refined, purposeful appearance.
- American Thunder axle-back system with dual tailpipes for the 2015-2017 Ford Mustang GT 5.0L
- Super 44 Series performance mufflers deliver an aggressive, deep, powerful sound inside and out
- Constructed from durable 409 stainless steel for long-lasting strength
- Large 4.00-inch polished stainless steel tips with an embossed logo for a premium look
- Flanged mount design with all required parts and hardware included for an easy fit
- CARB compliant and emissions-legal, backed by the Flowmaster Lifetime Limited Warranty
Sound & Performance
Flowmaster tuned this system to hit that sweet spot between aggressive and moderate, giving you a commanding presence at wide-open throttle while keeping the cabin comfortable during highway cruising. The mandrel-bent tubing and Super 44 mufflers work together to maximize flow, unlocking the performance benefits you expect from the American Thunder series.
Fitment
This system is designed specifically for 2WD 2015-2017 Ford Mustang GT models equipped with the 5.0L engine, and it fits both coupe and convertible body styles. As an axle-back configuration, it replaces the mufflers and tailpipes for a significant upgrade in sound and appearance without extensive modification. The muffler is included as part of the kit. Please note this product carries a California Proposition 65 warning, and it is CARB compliant with an emission code of 5.
