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Flowmaster American Thunder Catback Dual Dump Exhaust - Stainless Steel (86-98 GT, Cobra)

7 Reviews
Our Price

$341.06

  • Item #18431
  • MPN# 817574

  • Market Price $378.99
  • You Save 10% ($37.93)
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Product Videos Customer Photos
Features
  • Aggressive Flowmaster sound
  • Dual dump exhaust
  • Super 44 Series mufflers
  • Mandrel bent tubing
  • 409 stainless steel construction
  • Fits 1986-1998 GT and Cobra Mustangs
Description
Flowmaster Sound. The Flowmaster American Thunder Catback Dual Dump exhaust system with its mandrel bent tubing will improve your Mustangs exhaust flow for an increase in power, and the included Super 44 Series Mufflers will give your Pony a deep throaty muscle car exhaust sound.

Dual Dump Exit. This Flowmaster American Thunder Catback system features a Dual Dump design that exits the exhaust in front of the rear wheels for a stealthy appearance.

Stainless Steel Construction. Constructed from mandrel bent 2.5" diameter 16 gauge stainless 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.

Application. This Flowmaster American Thunder Stainless Steel Catback Dual Dump exhaust system is specifically designed to fit the 1986 to 1998 5.0 LX, GT and SVT Cobra Mustangs.

Mustang Fitment: 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 Details

What's in the Box
  • (1) Left muffler assembly
  • (1) Right muffler assembly
  • (2) Turn down pipes
  • (2) Clamps
  • (2) Hanger keepers
Installation Info
Tech Specs
Catback Exhaust Specifications
Piping Material: 409 Stainless Steel Tip Material : N/A
Piping Size: 2.5" Tip Size: N/A
Muffler Type: Chambered Fitment: 1986-98 GT and SVT Cobra Mustangs
Fitment
  • Cobra - 94, 95, 96, 97, 98
  • Foxbody - 86, 87, 88, 89, 90, 91, 92, 93
  • GT - 94, 95, 96, 97, 98

Most Helpful Reviews View All

Overall Rating 4.9/5 Write a Review
5/5
Great sounding mufflers!

Installed these along with the Pypes off-road x-pipe and I am extremely satisfied. Bolted right up in place with no install problems. Only problem with turndown tips is ground clearance, but my car is

Read More
Helpful (2) (0)

5/5

Top 100 Contributor

AWESOME SOUND! EASY INSTALL!

I actually didn't purchase this exhaust off of American Muscle, because they just started selling recently, but I just did the install today. I installed it with the BBK O/R H-Pipe and it sounds absolutely

Read More
Helpful (2) (1)

Videos

Hey, Justin here with AmericanMuscle.com, breaking down Flowmaster’s American Thunder Catback Dual Dump exhaust fitting the 86-98 GT and Cobra. Obviously the big difference between this system and other View Full Transcript

Customer Photos (1) View All

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Q & A (3 Questions, 7 Answers) Ask a Question

Turn down vs tail pipes Is there a HP diff with the turn downs vs full lenght tail pipes on a 97 GT?

miami01 Year: 1997 Model: GT

Good Question (0) (0)
  • No. It is merely a matter of preference in styling.

    Helpful (0) (0)

    SonicEvan Year: 2004 Model: V6

    Top 100 Contributor

Show 1 more answer Answer This Question

Loudness On a scale outta 1-10, 10 being the loudest. How loud would a 95 GT with a full length BBK Catted X and these dumps? I think with these dumps and the catted x it should be pretty loud and mean right?

going2ownastangsoon Year: 1995 Model: GT

Question Resolved
Good Question (0) (0)
  • 10, mine are louder then Boral stingers with no cats, inside vibrations are extremely high. The dumps echo off the street so the sound is amplified and deep. Its really mean sounding, and at WOT sounds amazing!!!

    Helpful (0) (0)

    OKid Year: 2001 Model: Cobra

Show 2 more answers

Fitment? I just took these off my totaled 1996 Cobra and wanted to know if it would fit on a 2003 Cobra?

Joshdaboss1994 Year: 2003 Model: Cobra

Good Question (0) (0)
  • No the exauhst hangers are different

    Helpful (0) (0)

    Dmcj Year: 1995 Model: GT

    Top 50 Contributor

Show 1 more answer Answer This Question

Reviews (7) Write a Review

  • 5 Stars .86 86%
  • 4 Stars .14 14%
  • 3 Stars 0 0%
  • 2 Stars 0 0%
  • 1 Stars 0 0%
4.9

out of 5 stars

7 Customers Recommend this Product

Installation Time:Afternoon

  • Loudness / Volume: 4.571429 4.6/5
  • Exhaust Note: 4.857143 4.9/5
  • Fit & Finish: 4.857143 4.9/5
  • Bang For Your Buck: 4.857143 4.9/5
Filter By Sort By
  • 5/5 Yes, I recommend this product

    August 08, 2012

    Great sounding mufflers!

    Installed these along with the Pypes off-road x-pipe and I am extremely satisfied. Bolted right up in place with no install problems. Only problem with turndown tips is ground clearance, but my car is also lowered a bit. My 96 GT rumbles nice And loud when I'm idling and driving. Head turner!

    Legend

    Year: 1996 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 3 Honolulu, HI, USA

    Helpful (2) (0)

  • 4/5 Yes, I recommend this product

    December 21, 2013

    flowmasta dumps

    Very cheap product and great bang for the buck. Have this mated to longtube headers and an x pipe and the sound is just mean. I recommend

    Top 50 Contributor

    Dmcj

    Year: 1995 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 2 bay area

    Helpful (1) (0)

  • 5/5 Yes, I recommend this product

    August 28, 2013

    Pretty mean sound !!!

    These flowmasters were easy to install very simple. I like them they really sound great n loud the only thing is that in the inside of the car is it rattles everything but I don't mind . I have em on bbk short headers n a bbk x pipe fits perfect .

    Juanjuanh

    Year: 1994 Model: Cobra Driving Style: Daily Driver 'Stangs I have owned: 2 Crane, TX 79731, USA

    Helpful (1) (0)

  • 5/5 Yes, I recommend this product

    June 15, 2012

    AWESOME SOUND! EASY INSTALL!

    I actually didn't purchase this exhaust off of American Muscle, because they just started selling recently, but I just did the install today. I installed it with the BBK O/R H-Pipe and it sounds absolutely amazing! Bolts right on, nice and easy. I had no issues whatsoever. I replaced my old hanger with new ones during the install, and I installed the new H-Pipe at the same time. This setup that I am running has an amazing increase in throttle response and overall horsepower. If you are afraid that you won't gain enough, let this be your reassurance. I absolutely love the way they sound.

    Top 100 Contributor

    TBang

    Year: 1994 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Topeka, KS, USA

    Helpful (2) (1)

  • 5/5 Yes, I recommend this product

    December 23, 2014

    Driveway Install.

    The Flowmaster American Thunder Catback Dual Dump exhaust system looks and sounds great. I was able to install the system in my driveway in one afternoon. The bolt hole alignment was a bit off and took awhile to get it just right to be able to install. Overall this system looks great and sounds even better, I could not be happier.

    Glenn76

    Year: 1994 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 3 Prescott, AZ, USA

    Helpful (0) (0)

  • 5/5 Yes, I recommend this product

    December 18, 2014

    easy install sounds great

    this was the easiest install i have ever done . and it sounds great

    92stang

    Year: 1992 Model: Other Driving Style: Show 'Stangs I have owned: 5+ Philadelphia, PA, USA

    Helpful (0) (0)

  • 5/5 Yes, I recommend this product

    May 03, 2013

    Easy install, great product!

    Another great product from flowmaster! Bolted up perfectly to my BBK xpipe, and has an awesome aggressive sound! It is a little louder inside the car, but not too bad. Don't miss the tail pipes, and love the cleaner look! I recommend this product! THANKS AM!

    Pat98

    Year: 1998 Model: Cobra Driving Style: Street / Strip 'Stangs I have owned: 2 Illinois, USA

    Helpful (0) (0)

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