1999-2004 Mustang Flowmaster American Thunder Stainless Catback Exhaust Kit GT/Mach 1 by Flowmaster

Review: 1999-2004 Mustang Flowmaster American Thunder CatBack Exhaust

Improve throttle response, sound, and power with this 1999-2004 Mustang Flowmaster American Thunder Stainless Steel Cat Back!

Item #FLO-817312
MPN# 817312

Everyday Low Price: $910.95

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Ford Mustang - 1999, 2000, 2001, 2002, 2003, 2004
Sub Models: GT, Mach 1

Fitment Notice

Fits 1999-2004 Mustang GT, Mach 1, and Bullitt
When using a BBK Midpipe and Flowmaster cat-back exhaust system together, the driver-side lead pipe may not properly line up with the cat-back exhaust due to manufacturing differences. Professional modifications may be required.

Benefits

Signature Flowmaster Sound
Improves Throttle Response
Increased Performance
Lifetime Warranty

Features

2.5" Mandrel Bent Tubing
409S Stainless Steel
Super 40 Mufflers
Made In The USA

What's in the Box

(2) Muffler Assemblies With Flow Tubes
(2) Tailpipes with Stainless Steel Tips
(2) Exhaust Clamps

Flowmaster American Thunder Cat Back
Add Flowmaster's signature sound to your New Edge with this 1999-2004 Mustang GT American Thunder cat back! With easy fit in mind, these American Thunder systems from Flowmaster are mandrel-bent for maximum performance and flow! American Thunder systems deliver a moderate to aggressive interior and exterior tone and are suited to the Mustang enthusiast who wants their performance to be heard!

Flowmaster Quality
Flowmaster mufflers are proudly made in the U.S.A. and the quality shows in this American Thunder cat back. Constructed with 2.5", mandrel-bent tubing, this cat back flows much better than your factory exhaust. Flowmaster utilizes 409s Stainless steel to ensure long-lasting performance! Designed for an easy fit, these Mustang exhaust systems include all the necessary parts and hardware for easy installation.

Flowmaster Exhaust Warranty - Click Here

Review: 1999-2004 Mustang Flowmaster American Thunder CatBack Exhaust

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Installation Instructions

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1999-2004 Mustang Flowmaster American Thunder Cat Back Exhaust

Published 4/25/16

California Residents:

WARNING: Cancer and Reproductive Harm- www.P65Warnings.ca.gov

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!