Description
Super Aggressive Flowmaster Sound. Give your coyote powered S550 Mustang Fastback that unmistakable Flowmaster sound with the Outlaw Series Cat-Back exhaust system from AmericanMuscle. This system improves exhaust flow using Flowmaster’s race-oriented style Outlaw mufflers for that super, aggressive exhaust note your high powered Pony deserves.
Race Car Growl. The included X-Pipe not only helps increase power, but it also adds a loud raspy, race car growl to the sound of your exhaust with its modern “X” crossover pipe design.
Stainless Steel Construction. Constructed from durable 3″ 16 gauge 409 stainless steel tubing for it’s corrosion resistant properties the Flowmaster Outlaw Cat-Back features two race-oriented mufflers with massive 4.0″ diameter polished 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.
Application. This Flowmaster Outlaw Series Cat-Back exhaust system is designed to fit the 2015-2017 GT Fastback Mustangs equipped with the coyote 5.0L DOHC V8 engine. Not compatible with convertibles. Reuses the stock hangers for installation.
Flowmaster 817734
CA Residents: WARNING: Cancer and Reproductive Harm
- Super Aggressive Flowmaster Outlaw Sound
- Durable 409 Stainless Steel Construction
- 3″ Mandrel-Bent Tubing
- 4″ Polished Stainless Steel Tips
- Includes X-Pipe and Two Flowmaster Outlaw Mufflers
- Fits 2015-2017 GT Fastback Mustangs
| Brand | Flowmaster |
| Exhaust System Type | Cat-Back System |
| Exhaust System Material | Stainless Steel |
| Exhaust System Tip Finish | Chrome, Polished |
| Exhaust System Tubing Diameter | 3.00 Inch |
| Exhaust Loudness | Aggressive |






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