2005-10 Ford Mustang Flowmaster American Thunder Stainless Axle-Back Exhaust Kit GT-GT500 - S197 by Flowmaster

Mustang Flowmaster American Thunder Stainless Axle-Back Exhaust Kit (05-10)

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Mustang Flowmaster American Thunder Stainless Axle-Back Exhaust Kit (05-10)

Flowmaster Exhaust has always been the "signature sound" for a Mustang GT or GT500 and this 05-10 Mustang S197 Flowmaster American Thunder Axle back Muffler kit does not disappoint!

Item #FLO-817410

Your Price: $494.49

Market Price:$543.93
You Save 10.00 % ($49.44)

Ships by Thursday, March 05

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


  • Signature Aggressive Sound
  • Stainless Steel Black Finish Mufflers
  • Lifetime Warranty

What's in the Box

  • (2) Flowmaster Axle Back Mufflers
  • (2) Clamps
  • (1) Instructions
  • (1) Warranty Card
  • (1) Decal

Made in the USA

Product Description

Flowmaster announces the release of our new kit for the 2005-2010 Ford Mustang GT. It features a pair of specially-designed 5" X 10" mufflers, which provide minimal interior resonance while delivering a deep and aggressive exterior tone. Through extensive testing this kit has shown some horsepower and torque gains. Features polished tips with Flowmaster embossed logo.

This aggressive sounding system is designed to replace the original rear mounted mufflers located behind the rear axle. With easy fit in mind, the system is mandrel bent for maximum performance and includes specially selected mufflers to support the performance image of the car. As an American Thunder system, it delivers an aggressive exterior tone with moderate interior sound level that is suited to the enthusiast who wants their performance to be heard. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, the system does require cutting of the factory system and includes all necessary parts and hardware for easy installation.

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!

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Vehicle Applications

Ford Mustang - 2005 (05) - 2006 (06) - 2007 (07) - 2008 (08) - 2009 (09) - 2010 (10)

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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