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1999-04 Ford Mustang Flowmaster American Thunder Cat-Back Exhaust System Stainless Steel Cobra - New Edge by Flowmaster

Overview   |  Benefits   |  Features   |  In the Box   |  Description   |  Videos
Mustang Flowmaster American Thunder Cat-Back Exhaust System Stainless Steel (99-04)
Give your 99-04 Mustang Cobra more power & a louder tone with an American Thunder Catback exhaust.

Item# FLO-817248

Everyday Low Price: $532.32

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  • More Exhaust Flow
  • Increased Performance
  • Louder Exhaust


  • 2.5" Stainless Tubing
  • 3" Polished Tips

What's in the Box

  • (1) Catback Exhaust System

Made in the USA

Product Description

Looking for a way to increase the horsepower on your 1999-2004 Ford Mustang Cobra while giving it that true American muscle car sound? This Flowmaster American Thunder cat-back exhaust system is the perfect solution! This kit is a direct replacement for your OEM pipes and features the same hanger locations for easy installation. Featuring 2 1/2" stainless steel piping and 3" polished tips, you can get your Cobra looking great, performing better, and sounding meaner with just the system!

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 - 1999 (99) - 2000 (00) - 2001 (01) - 2002 (02) - 2003 (03) - 2004 (04)

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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