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

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

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Mustang Flowmaster American Thunder Classic 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 Flowmaster American Thunder Axle back Muffler kit does not disappoint!

Item #FLO-817460

Everyday Low Price: $537.44

Ships by Friday, April 03

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  • Increased Horsepower & Fuel Economy
  • Aggressive Sound
  • Direct Bolt On Installation


  • Stainless Steel Construction
  • Utilizes Factory Hanger Mounts
  • Easy, Clamp-On Design
  • Flowmaster Lifetime Warranty
  • Polished 4" Tips
  • Made in the USA

What's in the Box

  • (1) Flowmaster 2.5" Axle-Back Pair

Made in the USA

Product Description

The 817460 Flowmaster American Thunder Classic Axle Back Exhaust System for the 2005-2010 Ford Mustang GT & GT500. It features a pair of specially-designed 40-series mufflers, which provide a deep and aggressive exterior tone. Through extensive testing this kit has shown horsepower and torque gains, as well as a weight savings over the stock mufflers. Features 4" polished stainless tips with the Flowmaster embossed logo.

This aggressive sounding system is designed to replace the original rear mounted mufflers located behind the Mustang rear axle. With easy fit in mind, the exhaust system is mandrel bent from 16 gauge stainless for maximum performance and includes specially selected 40-series mufflers to support the performance image of the car.

As an American Thunder Mustang Exhaust System, it delivers an aggressive exterior tone with moderate interior sound level that is suited to the Mustang enthusiast who wants their performance to be heard. Like all Flowmaster Exhaust Systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, the system does not require cutting of the factory system and includes all necessary parts and hardware for easy installation.

Product Videos

Mustang Flowmaster Exhaust Systems Review

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!


Community Q&A

Product Reviews

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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