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Flowmaster American Thunder Catback Exhaust (87-93 GT)

19 Reviews
Our Price

$409.26

  • Item #18405
  • MPN# 17116

  • Market Price $454.99
  • You Save 10% ($45.73)
In Stock Ships same business day.
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Customer Photos
Features
  • Aggressive Flowmaster sound
  • Super 44 Series Mufflers
  • Mandrel Bent Tubing
  • Durable Aluminized Steel Construction
  • Fits 1987-1993 GT Mustangs
Description
Flowmaster Sound . The Flowmaster American Thunder Catback exhaust system with its mandrel bent tubing will improve your 1987-1993 GT Mustangs exhaust flow for an increase in power, and their included Super 44 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 Super 44 Series chambered mufflers for that classic muscle car sound.

Fitment. This Flowmaster American Thunder Catback exhaust system is designed specifically for the 1987 to 1993 GT Mustangs for both great a fit and great sound.

Mustang Fitment: 1987 1988 1989 1990 1991 1992 1993 Details

What's in the Box
Hardware included:
  • (2) Clamps, Attached Hangers
Installation Info
Tech Specs
Catback Exhaust Specifications
Piping Material: Aluminized Steel Tip Material : Aluminized Steel
Piping Size: 2.5" Tip Size: N/A
Muffler Type: Chambered Fitment: 87-93 GT Mustangs
Fitment
  • Foxbody - 87, 88, 89, 90, 91, 92, 93

Fits GT Only

Most Helpful Reviews View All

Overall Rating 5/5 Write a Review
5/5
NICE

This exhaust is very nice. Sounds great with my off road H-pipe. I ordered this on the 9th and got it the 10th with the standard shipping. Fast!

Helpful (9) (0)

5/5
Great Exhaust

The exhaust is great and is an easy install. Everything that I needed was in the box and ready to install. Great price and free shipping made it even more worth it. Keep up the great service americanmuscle

Read More
Helpful (11) (2)

Customer Photos (3) View All

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Q & A (2 Questions, 1 Answers) Ask a Question

Will this Catback mount to a stock h-pipe?

88gtconvert Year: 1988 Model: GT

Good Question (0) (0)
  • Yes it will! I just installed the cat back kit to a completely stock 91 GT.

    Helpful (1) (0)

    nickb61 Year: 1991 Model: GT

Answer This Question

Will the American Thunder Catback exhaust system fit with BBK's long tube headers?

OneSick5oh Year: 1993 Model: GT

Be the First to Answer This Question
Good Question (0) (0)

Reviews (19) Write a Review

  • 5 Stars 1.0 100%
  • 4 Stars 0 0%
  • 3 Stars 0 0%
  • 2 Stars 0 0%
  • 1 Stars 0 0%
5.0

out of 5 stars

19 Customers Recommend this Product

Installation Time:Afternoon

Installation Cost:$100-$250

  • Loudness / Volume: 4.769231 4.8/5
  • Exhaust Note: 5 5/5
  • Fit & Finish: 4.769231 4.8/5
  • Bang For Your Buck: 4.846154 4.8/5
Filter By Sort By
  • 5/5 Yes, I recommend this product

    September 15, 2009

    NICE

    This exhaust is very nice. Sounds great with my off road H-pipe. I ordered this on the 9th and got it the 10th with the standard shipping. Fast!

    Stangguy

    Helpful (9) (0)

  • 5/5 Yes, I recommend this product

    February 22, 2010

    AW,,,, SOME SOUND !

    It took me about 6 hour's to install this system. Dad gum knuckle buster!!!! But Hay call me slow with A socket set and Saw-Saw. My Stang sure ant slow. It sure talk's to me now. Great Rumble & Sound.

    Mark

    Helpful (8) (0)

  • 5/5 Yes, I recommend this product

    August 10, 2009

    Great Exhaust

    The exhaust is great and is an easy install. Everything that I needed was in the box and ready to install. Great price and free shipping made it even more worth it. Keep up the great service americanmuscle i have a 1988 fox body gt with t tops and this has been my website of choice for just about everything i have purchased for my car.

    CJS5.0

    Year: 1998 Model: GT

    Helpful (11) (2)

  • 5/5 Yes, I recommend this product

    March 31, 2011

    American Thunder exhaust

    Very happy With the system, flowmasters never disappoint. The install was pretty easy and the mendral bent tubing is of exceptional quality. Would absolutely purchase again. On a side note before installing check to make sure all your exhaust hangers are still there and purchase new rubber hangers for the tips out back. Your stock one will likely crumble apart.

    Adam

    Year: 1990 Model: GT Driving Style: Daily Driver

    Helpful (5) (2)

  • 5/5 Yes, I recommend this product

    January 07, 2015

    American Thunder for the perfect sound

    This kit came with everything I needed for a smooth install and a perfect fit. The sound is dead on what i wanted when I ordered this product (which got to my house very quickly AND FREE!). The sound is the perfect Mustang sound that I dreamt of.

    nickb61

    Year: 1991 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Athens, GA, USA

    Helpful (1) (0)

  • 5/5 Yes, I recommend this product

    June 30, 2014

    Easy install.

    My Flowmaster cat back system arrived quickly as my orders usually do from American Muscle. I installed the system in my 1989 Mustang GT in my driveway. The fit was great as usual.

    a50ina50

    Year: 1989 Model: GT 'Stangs I have owned: 5+ Delran, New Jersey

    Helpful (1) (0)

  • 5/5 Yes, I recommend this product

    July 04, 2013

    Love this Flowmaster catback exhaust!

    My mechanic said the installation went without a single hitch. This system really releases the wild side of my 'stang. I absolutely love the deep, resonant "Flowmaster" tone this system produces. At speed, there is no droning. I have only had this system installed a couple of days now, and have received numerous compliments on how nice the car sounds. Thanks to Flowmaster, and American Muscle, for an outstanding product.

    Garcon

    Year: 1987 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 2 Kendallville, IN, USA

    Helpful (1) (0)

  • 5/5 Yes, I recommend this product

    July 27, 2012

    FLO-DRONE!!

    This is an amazing exhaust that went right in. When it showed up in smaller boxes I thought it would be hard work but it bolted right in. I used the Pypes Catted X-Pipe (79-95 5.0L) and Ford Racing Double Hump Adjustable Transmission Crossmember with it. I went home from work with an exhaust leak and plugged cats, tinkered in the garage for an afternoon, and went back the next day turning heads and getting compliments. This is an awesome upgrade at a fantastic price. I won't go anywhere else for parts.

    KleineAngst

    Year: 1985 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Ogden, UT, USA

    Helpful (1) (1)

  • 5/5 Yes, I recommend this product

    January 20, 2012

    Beautiful explosion of sound

    These exhaust are jus amazing. If you want loud uncontrolled sound...these exhaust are what you are looking for. Amazing when you step on the peddle especially in the High rpm. Just a amazing explosion of raw sound. Awesome flowmaster exhaust.

    Top 250 Contributor

    Bushmaster03

    Year: 1989 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 3 Orlando fl

    Helpful (1) (1)

  • 5/5 Yes, I recommend this product

    August 19, 2011

    flowmaster exhaust

    we liked the fact it was free shippin and Flowmaster American Thunder Catback Exhaust was very easy to install. Every piece we needed was in one box did not have to buy any other products. would buy this product again.

    John Whalen

    Year: 1990 Model: GT Driving Style: Daily Driver

    Helpful (0) (1)

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