2011-12 Mustang Flowmaster Outlaw Axle Back Exhaust Kit GT/GT500 5.0/5.4 by Flowmaster

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Flowmaster Mustang Outlaw Axle Back Exhaust Kit (11-12) GT/GT500 5.0/5.4 817516
  • Flowmaster Mustang Outlaw Axle Back Exhaust Kit (11-12) GT/GT500 5.0/5.4 817516
  • Flowmaster Mustang Outlaw Axle Back Exhaust Kit (11-12) GT/GT500 5.0/5.4 817516

Add an aggressive sound to your 11-12 Mustang GT/GT-500 with a Flowmaster Outlaw Axle Back exhaust!

Item #FLO-817516
MPN# 817516

Your Price: $442.97

Market Price:$580.60
You Save 23.70 % ($137.63)

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  • Easy Install
  • Improved Throttle Response
  • More Power
  • Better Mileage


  • Aggressive Sound
  • Aluminized Steel Black Finish Mufflers
  • 3 Year Warranty

What's in the Box

  • (1) LH Axle Back Assembly
  • (1) RH Axle Back Assembly

Made in the USA

Product Description

Want more sound from your 2011-2012 Mustang? Get yourself the Flomaster Outlaw Axle Back exhaust and let your Mustang howl! Get better throttle response, more power and great sounds from your Mustang with this awesome axle back by Flowmaster! These Flowmaster Outlaw series Mustang Axle Back exhaust systems are mandrel-bent for maximum performance and include specially designed mufflers. They deliver super-aggressive interior and exterior tones and are suited for the enthusiast who wants the most aggressive components that they can buy. The systems include hardware and tips, so installation is quick and easy.

Flowmaster Exhaust Warranty - Click Here

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  • Product Videos

    Check out our YouTube channel for even more tech tips, installation videos, how-tos, and more. The best place to go for anything Mustang related!

    Customer Photos (1)

    Vehicle Applications

    Ford Mustang - 2011 (11) - 2012 (12) - 2013 (13) - 2014 (14)

    About This Brand

    Flowmaster - The Exhaust Technology Company
    Flowmaster operates the only exhaust Research & Design facilities of its kind in the world, centered around the SuperFlow SF-7100 engine dynamometer complete with E.C.A. (engine cycle analysis) equipment and also SuperFlow chassis dyno's.

    Through use of these dyno's, Flowmaster's engineering staff can track the complete engine cycle in millionths of a second and can obtain exact technical data of each degree of cam rotation, from induction to the tip of the exhaust system, while also showing the power numbers that really matter, the power numbers "to the ground."

    Flowmaster also utilizes Spectrum Analyzers to fine "tune" the sound of each of the eleven different series of mufflers that Flowmaster currently offers, both for peak performance and just the right sound levels and tones. Flowmaster's dedication to quality is what makes them the exhaust industry leader for Latemodel Mustangs and SVT Lightnings!

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