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Flowmaster American Thunder Catback - Stainless Steel (87-93 LX; 86 GT)

5 Reviews
Our Price

$515.54

  • Item #18456
  • MPN# 817213

  • Market Price $572.99
  • You Save 10% ($57.45)
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Product Videos Customer Photos
Features
  • Aggressive Flowmaster sound
  • Super 44 Series mufflers
  • 2.5" polished stainless steel tips
  • Mandrel bent tubing
  • 409 stainless steel construction
  • Fits 1987-1993 5.0L Lx and 1986 GT Mustangs
Description
Flowmaster Sound. Give your Mustang that unmistakeable Flowmaster sound with a nice power boost by installing a American Thunder catback Exhaust system. Featuring mandrel bent tubing this Flowmaster system will improve exhaust flow for an increase in power, and the included Super 44 Series Mufflers will improve your exhausts sound for a deeper throatier muscle car exhaust note.

Stainless Steel Construction. Constructed from mandrel bent 2.5" 409 stainless steel tubing for it's corrosion resistant properties the Flowmaster American Thunder catback features Super 44 Series chambered mufflers with 25" Long by 2.5" diameter OEM style polished stainless steel tips for muscle car looks and sound.

Application. This Flowmaster American Thunder stainless steel Catback exhaust system is designed to fit the 1987-1993 LX and the 1986 GT Mustangs for both great looks and great sound.

Mustang Fitment: 1986 1987 1988 1989 1990 1991 1992 1993 Details

What's in the Box
  • (2) Muffler assemblies
  • (2) Over axle pipes
  • (2) Exhaust Tips
  • (2) Clamps
Installation Info
Tech Specs
Catback Exhaust Specifications
Piping Material: 409 Stainless Steel Tip Material : Polished Stainless Steel
Piping Size: 2.5" Tip Size: 25"L x 2.5" diameter
Muffler Type: Chambered Fitment: 87-93 LX and 86 GT Mustangs
Fitment
  • Foxbody - 86, 87, 88, 89, 90, 91, 92, 93

Fits 1986 GT and 1987-1993 LX Mustangs

Most Helpful Reviews View All

Overall Rating 4.8/5 Write a Review
5/5
86-93 Flowmaster American Thunder Catback 409SS

Well built and an easy install. Shipped safely to ensure tailpipes arrive without dings/damage. Classic Foxbody sound with an offroad H-pipe. Maybe no better sound in the history of the automobile than

Read More
Helpful (1) (0)

5/5

Top 500 Contributor

Best sounding exaust real nice sound!!

The quality of the flow master system is flawless. it fit perfectly .and the exaust note is loud .But it the sound you cant beat it .I have a built 331 ford stroker in my 1990 mustang and now you really

Read More
Helpful (0) (0)

Videos

Hello and welcome back to Stage 3 of American Muscle’s project Foxbody, as you can see we’re currently out enjoying the fruits of our labor which took place in the first two stages, and for the first time View Full Transcript

Customer Photos (2) View All

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Q & A (2 Questions, 0 Answers) Ask a Question

Does this fit the 1993 SVT Cobra? I've been told that this fits the 93 cobra, but you need to lengthen the hangers. Is this difficult? What does it entail?

Dustin9187 Year: 1993 Model: Cobra

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Good Question (0) (0)

The tips do they have the Flowmaster name of n them

Rarefoxnj Year: 1992 Model: Other

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Reviews (5) Write a Review

  • 5 Stars .80 80%
  • 4 Stars .20 20%
  • 3 Stars 0 0%
  • 2 Stars 0 0%
  • 1 Stars 0 0%
4.8

out of 5 stars

5 Customers Recommend this Product

Installation Time:Afternoon

  • Loudness / Volume: 4.8 4.8/5
  • Exhaust Note: 5 5/5
  • Fit & Finish: 4.2 4.2/5
  • Bang For Your Buck: 4.8 4.8/5
Filter By Sort By
  • 5/5 Yes, I recommend this product

    July 24, 2013

    86-93 Flowmaster American Thunder Catback 409SS

    Well built and an easy install. Shipped safely to ensure tailpipes arrive without dings/damage. Classic Foxbody sound with an offroad H-pipe. Maybe no better sound in the history of the automobile than this combination.

    tntgall

    Year: 1982 Model: Other

    Helpful (1) (0)

  • 5/5 Yes, I recommend this product

    January 11, 2015

    No better product for the money.

    I honestly couldn't be more happy with this purchase. Shipping was fast and easy, everything was well packed and not a single scratch on any of the finished tips! Easy installation that took about 2 hours, with mostly adjustments to get the tips lined up perfect with no sag. Highly recommended product. And would recommend the all 409 stainless exhaust, for the money you couldn't ask for a better exhaust system for your car.

    JG95

    Year: 1990 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 2 Leesburg, FL, USA

    Helpful (0) (0)

  • 5/5 Yes, I recommend this product

    July 17, 2014

    Great product

    Great product, however the hole pattern was off by an 1/8 of an inch and had to be modified, which took about 3hrs, other than that I love them!!!

    Shaun1399

    Year: 1987 Model: Other Driving Style: Daily Driver 'Stangs I have owned: 2 Denver, CO, USA

    Helpful (0) (0)

  • 5/5 Yes, I recommend this product

    July 01, 2014

    Best sounding exaust real nice sound!!

    The quality of the flow master system is flawless. it fit perfectly .and the exaust note is loud .But it the sound you cant beat it .I have a built 331 ford stroker in my 1990 mustang and now you really can hear the power when you get on the throttle.

    Top 500 Contributor

    Tims

    Year: 1990 Model: Cobra Driving Style: Daily Driver 'Stangs I have owned: 1 NEWJERSEY

    Helpful (0) (0)

  • 4/5 Yes, I recommend this product

    October 18, 2013

    This is a high quality exhaust system.

    This is a great product but not something a novice can install alone. It is a high quality product with a great finish on the polished stainless steel pipes. The installation is not very forgiving. It required heating and shaping the connections to get them together and a precise mounting to get both tailpipes to line up exactly the same. Don't get me wrong, now that they are installed, I love this exhaust system. The sound is awesome.

    Tim57

    Year: 1992 Model: Other Driving Style: Daily Driver 'Stangs I have owned: 1 Hamburg, NY 14075, USA

    Helpful (0) (0)

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