1999-04 Mustang Flowmaster American Thunder Catback Exhaust System - GT-Mach 1 by Flowmaster

Mustang Flowmaster American Thunder Catback Exhaust System (99-04)


Details   |  Description   |  Videos   |  Reviews
Flowmaster Mustang American Thunder Catback Exhaust System (99-04) GT-Mach 1 17312
  • Flowmaster Mustang American Thunder Catback Exhaust System (99-04) GT-Mach 1 17312
  • Flowmaster Mustang American Thunder Catback Exhaust System (99-04) GT-Mach 1 17312
  • Flowmaster Mustang American Thunder Catback Exhaust System (99-04) GT-Mach 1 17312
  • Flowmaster Mustang American Thunder Catback Exhaust System (99-04) GT-Mach 1 17312

Improve throttle response, sound, and power with this 1999-2004 Mustang Flowmaster American Thunder catback!

Item #FLO-17312
MPN# 17312

Your Price: $495.97

Market Price:$648.75
You Save 23.55 % ($152.78)

In Stock Ships tomorrow!

Add to cart


Benefits

  • Signature Flowmaster Sound
  • Increased Performance
  • Improves Throttle Response
  • Lifetime Warranty

Features

  • 2.5" Mandrel Bent Tubing
  • American Thunder Mufflers
  • Aluminized Steel
  • Made In The USA

What's in the Box

  • (2) Muffler Assemblies With Flow Tubes
  • (2) Tailpipes with Stainless Steel Tips
  • (2) Exhaust Clamps
  • Install Instructions
  • Flowmaster Stickers
  • Warranty Card

Made in the USA

Product Description

Flowmaster American Thunder Catback
Add Flowmaster's signature sound to your Fox with this 1999-2004 Mustang GT American Thunder catback! 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 catback. Constructed with 2.5", mandrel bent tubing, this catback flows much better than your factory exhaust. Flowmaster utilizes Aluminized steel to ensure long lasting performance! Designed for an easy fit, these Mustang exhaust systems include all necessary parts and hardware for easy installation.

Application
-Fits 1999-2004 Ford Mustang, GT, MACH1 and Bullitt models, (not Cobra), with a 4.6L SOHC engine.


Flowmaster Exhaust Warranty - Click Here


Product Videos

Review: 1999-2004 Mustang Flowmaster American Thunder CatBack Exhaust

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 Photos (0)


Product Reviews (4)


5.0
out of 5 stars
5 stars
4 reviews
5 stars    4
4 stars    0
3 stars    0
2 stars    0
1 star    0

100%
OF CUSTOMERS
RECOMMEND THIS PRODUCT
4 of 4 REVIEWS
RECOMMEND THIS PRODUCT
4 of 4 REVIEWS


5 Stars   sounds great
By on 8/24/2014
Thanks LMR. You provide great service. I'm not a mechanic but with a jack and jack stands I was able to install the flow master cat back in four in a half hrs. It really sounds great on my 01 GT convertible. Not too loud and in my opinion just right. Directions from flow master are "just OK" but can be figured out with common sense. Just a heads up, you will need a 13 and 14mm deep socket to complete the install. (Which I didn't know) I'm very happy with the whole buying experience and the end result.

Yes, I would recommend this item to a friend!


Was this review helpful to you?

5 Stars   Fast easy
By on 5/19/2014
Ordered a couple weeks ago received tracking info ASAP got eaxactly what I ordered could not be happier
Not too loud can come home and you won't here me coming unless I want you too (still pleanty loud when you step on it)

Yes, I would recommend this item to a friend!


Was this review helpful to you?

5 Stars   Fast delivery
By on 4/7/2014
Great fit

Yes, I would recommend this item to a friend!


Was this review helpful to you?

5 Stars   Great Sound
By on 6/2/2015
Great sounding, removed the old stock system, got the Flowmaster mufflers on OK,
had to visit my local garage to get the tail pipes installed.Could not get the tailpipes fitted with the car on jack stands - not enough height. Nice exhaust note, although a bit of a drone around 1800-2000 rpm - to be expected with a high flow system.

Yes, I would recommend this item to a friend!


Was this review helpful to you?


Vehicle Applications

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


About This Brand


Flowmaster
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!

Look for Similar Items by Category

1994-2004 Mustang Parts » 1994-2004 Mustang Exhaust » 1994-2004 Mustang Cat Backs & Tailpipes
Top Mustang Performance Parts (94-04)
Ford Mustang Parts » Mustang Exhaust » Mustang Cat Back Exhaust Systems
Bring the Noise! » Top 94-04 Mustang Exhaust Mods
Project Green Bean: '99 Mustang GT » 1999-2004 Mustang Flowmaster American Thunder Catback Exhaust
Project Green Bean: '99 Mustang GT
Mustang Bolt On Bonanza

Products by Vehicle