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2013-14 Ford Mustang Flowmaster American Thunder Axle-Back Exhaust System GT - S197

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Mustang Flowmaster American Thunder Axle-Back Exhaust System (13-14)
Give your 2013-2014 Mustang more power & a meaner sound with a Flowmaster American Thunder axle-back!

Item# FLO-817588

Your Price: $434.99

Market Price:$478.49
You Save 10.00 % ($43.50)

In Stock!  


  • Increased Performance
  • Polished Tips


  • Stainless Steel Construction
  • Dyno Tuned For Maximum Performance
  • Delta Flow Technology

What's in the Box

  • (1) Axle-Back Exhaust System

Made in the USA

Product Description

This Flowmaster American Thunder axle-back for 2013-2014 Ford Mustang GT's is a great way to increase power, get a lounder exhaust, and keep your S197 looking great! This kit features 3" piping and 4" tips for more exhaust flow to get the most performance possible. Made of T409 stainless steel, this axle-back is guaranteed to last and is backed by Flowmaster's lifetime limited warranty. Pick up this exhaust system for your Mustang today and give your S197 that true American muscle car sound!

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 Reviews

Vehicle Applications

Ford Mustang - 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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