Flowmaster American Thunder Catback Exhaust (99-04 GT, Mach 1)

Flowmaster American Thunder Catback Exhaust (99-04 GT, Mach 1)

HEAR IT: Flowmaster American Thunder Mustang Catback Exhaust

About Flowmaster

Flowmaster Mustang Exhaust Kits
Flowmaster, Inc. is a specialty performance aftermarket exhaust parts manufacturer. It was founded in 1983 by Ray Flugger. Originally created to minimize California Sprint Car engine noise without sacrificing performance, Flowmaster ...... READ MORE
OUR PRICE$459.99
Market Price $529.99You Save 13% ($70.00)
Item # 18410
Ships the same business day

Product Features

  • Aggressive Flowmaster sound.
  • Super 40 Series Mufflers.
  • 3" Polished stainless steel tips.
  • Mandrel Bent Tubing.
  • Durable Aluminized Steel Construction.
  • Fits 1999-2004 GT, Mach 1, and Bullitt Mustangs.

Flowmaster Sound.The Flowmaster American Thunder Catback exhaust system with its mandrel bent tubing will greatly improve your 1999 to 2004 Mustangs exhaust flow for an increase in power, and their included Super 40 Series Mufflers will improve your exhausts sound for a deeper throatier muscle car exhaust note.

Quality Construction. Constructed from mandrel bent 2.5" 16 gauge aluminized steel tubing for it's corrosion resistant properties the Flowmaster American Thunder Catback features their Super 40 Series chambered mufflers with 3.0 " diameter OEM style polished stainless steel tips for great muscle car looks and sound.

Fitment. This Flowmaster American Thunder Catback exhaust system is specifically designed to fit the 1999-2004 GT, 2001 Bullitt, and 2003-2004 Mach 1 Mustangs for both impressive looks and sound. This system will not fit the SVT Cobra Mustangs.


Catback Exhaust Specifications
Piping Material: Aluminized Steel Tip Material : Polished Stainless Steel
Piping Size: 2.5" Tip Size: 3.0"
Muffler Type: Chambered Fitment: 1999-2004 GT, Bullitt and Mach 1 Mustangs

Installation Time:

(approx) 2 Hours

Difficulty Level:

Advanced mechanical skills required.

What's in the box?

Hardware included:
  • (2) Two Clamps
  • (4) Four Lock Washers

What's in the box?

Hardware included:
  • (2) Two Clamps
  • (4) Four Lock Washers
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Fitment:
  • GT 99, 00, 01, 02, 03, 04
  • Mach 1 03, 04
  • Bullitt 01
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Known Exceptions:
Fits GT, Mach 1, and Bullitt.

Customer Reviews

4.744
  • 5/5
    v6 mustang
    January 10, 2010
    Jeremy
    Very very happy with this exhaust, I first got the mac O/R H with SLP loudmouth 1 exhaust...big mistake, it was way too loud, and not a good loud. switch to this exhaust and it sounds perfect. good and deep, not raspy and not a tuner sound. I would recomend this for ANY v6 stang looking for duels.
    9 of 3 voted this as helpful.Yes, I recommend this product.
  • 5/5
    more that satisfied
    January 18, 2011
    Pat
    2000GTDaily Driver
    Just installed on my 2000 vert gt, more than happy with the low rumble and subtle backfire, noticable slight gain in power (untuned) in mid rpm range. Could be a tad louder, can easily be fixed with a midpipe.
    7 of 8 voted this as helpful.Yes, I recommend this product.
  • 5/5
    Sounds great!!
    January 18, 2011
    Anthony
    This is the perfect exhaust if you're looking for a nice deep rumble! Sounds great inside and out. Took less than 1 hour to install without any problems at all. Very happy with this purchase and would recomend to anyone looking to get more noise out of their stock v8!
    3 of 3 voted this as helpful.Yes, I recommend this product.