Description
Classic Flowmaster Sound. Add the unmistakable Flowmaster sound to your S550 GT with an American Thunder Series Axle-Back Exhaust System from AmericanMuscle. This axle-back system improves exhaust flow using Flowmaster’s Super 44 Series mufflers for that classic aggressive muscle car exhaust note your high powered Pony deserves.
Stainless Steel Construction. Constructed from durable 2.5″ 16 gauge 409 stainless steel tubing for it’s corrosion resistant properties, the Flowmaster American Thunder Axle-Back features Super 44 Series mufflers with massive 4.0″ diameter polished 304 stainless steel tips for impressive muscle car looks and sound. As an added bonus, the tips are embossed with the “Flowmaster” logo for true custom styling.
Cut & Clamp Installation. The installation of this Axle-Back Exhaust requires cutting and removing the factory muffler assemblies and clamping the new muffler assemblies in place. Clamps and instructions are provided.
Application. This Flowmaster American Thunder Series Axle-Back Exhaust System is designed to fit the 2015-2017 GT Mustangs, including fastback and convertible models.
Flowmaster 817749
CA Residents: WARNING: Cancer and Reproductive Harm
- Aggressive Flowmaster Super 44 Series Sound
- Durable 409 Stainless Steel Construction
- 2.5″ Mandrel-Bent Tubing
- 4″ Polished 304 Stainless Steel Tips
- Includes (2) Flowmaster Super 44 Series Mufflers
- Compatible with Fastback and Convertible
- Fits All 2015-2017 GT Mustangs
| Brand | Flowmaster |
| Exhaust System Type | Axle-Back System |
| Exhaust System Material | Stainless Steel |
| Exhaust System Tip Finish | Chrome, Polished |
| Exhaust System Tubing Diameter | 3.00 Inch |
| Exhaust Loudness | Moderate |






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