WIN $5,000 For Your Mustang! Enter Now
Talk to a Mustang Expert
1-888-332-7930
Mon-Thu 8:30a-11p, Fri-Sun 8:30a-9p

Free Shipping - Get it by Dec. 24th available on most items - Details

Flowmaster American Thunder Cat-Back Exhaust w/ Polished Tips (87-93 LX; 86 GT)

Market Price $509.60 You Save 12% ($58.63)

$450.97

FREE Shipping
  • Item 18407
  • MPN# 17213

In Stock Ships same business day. Choose options to add to cart

Features & Details

  • Aggressive Flowmaster Sound
  • Super 44 Series Mufflers
  • Mandrel-Bent Tubing
  • Durable Aluminized Steel Construction
  • 2.5" Polished Stainless Steel Tips
  • Fits 1987-1993 LX and 1986 GT Mustangs
Flowmaster Sound. The Flowmaster American Thunder Cat-Back exhaust system with its mandrel bent tubing will improve your 1987-1993 LX or 1986 GT Mustangs exhaust flow for an increase in power. Their included Super 44 Series Mufflers with attached hangers 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 with 25" Long by 2.5" diameter OEM style polished stainless steel tips for muscle car looks and sound.

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

Fitment: 1986 1987 1988 1989 1990 1991 1992 1993 Details

What's in the Box
Hardware included:
  • (2) Clamps, Attached Hangers
Installation Info
Tech Specs
Cat-Back Exhaust Specifications
Piping Material: Aluminized 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
Will it fit my Mustang?
  • Foxbody - 86, 87, 88, 89, 90, 91, 92, 93

Fits 1986 GT and 1987-1993 LX Mustangs

Most Helpful Reviews

5/5
Awesome!!!!

I just installed this system on my '86 GT convertible. It is the perfect sound! Loud but not obnoxiously loud. It only took a few minutes to install at my local shop and they look great too. Shipping ...

Read More
Helpful (19)

5/5
great features

the exhasut sounds great and was installed easly its a great product

Helpful (2)

Overall Rating 4.7 out of 5 stars
Read All 18 Reviews

Customer Photos (9) Submit Your Photo

View All 9 Photos

You Might Also Like

3 Questions / 5 Answers

Ask a Question

Is the word Flowmaster etched on the stainless tips? I was just wondering if there is an option to have the polished tips with or without the etching. Thanks.

Tomicino

  • We only have this exhaust available with the Flowmaster etched along the side of the tips. Hope this helps!

    LisaS

    Good Answer (1) (0)

Show 1 more answer Question Resolved

will this fit an lx shorty catted x pipe?

temper

  • if u have long tube headers into that shorty xpipe then yes this should fit on ur stang

    natmill64

    Good Answer (1) (0)

Show 1 more answer Answer This Question I need this answered (0) (0)

Fitment question Will this catback kit mate up with the bbk catted h pipe and stock headers on my 89 Lx 5.0 ??

PonyBoy415

Answer This Question I need this answered (0) (0)

More Products You Might Like

Customer Reviews (18) Write a Review

Overall Rating 4.7

out of 5 stars

Installation Time:Afternoon

  • Loudness / Volume 4.235294 4.2
  • Exhaust Note 4.764706 4.8
  • Fit & Finish 4.470588 4.5
  • Bang For Your Buck 4.529412 4.5



  • 5/5

    August 04, 2009

    Awesome!!!!

    I just installed this system on my '86 GT convertible. It is the perfect sound! Loud but not obnoxiously loud. It only took a few minutes to install at my local shop and they look great too. Shipping was very quick to Connecticut (next day) for no extra charge. Buy these pipes!

    Frank

    Year: 1986 Submodel: GT

    Helpful (19) (0)

  • 5/5

    Installation Time: Afternoon

    January 16, 2012

    great features

    the exhasut sounds great and was installed easly its a great product

    stephenlx

    Year: 1990 Submodel: GT oak hill,wv

    Helpful (2) (0)

  • 5/5

    Installation Time: Afternoon

    May 15, 2014

    Great Catback

    before buying this catback i had stock headers mid pipe and super 44 mufflers with the pretty much stock exhuast i wasnt getting much sound out of my exhaust so i decided to upgrade and bought bbk equal length headers, bbk h pipe with high flow cats match all of that up to this catback man what a world of difference car sounds amazing now.

    airwolf

    Year: 1993 Submodel: Other Elkton, VA

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    July 27, 2012

    great sound

    My 13 year old son and I installed this system on our 1992 Lx Summer edition. We all so used the bbk off road H-pipe . We installed the system in an afternoon,fit well but a hoist would have made it easier. The sound is fantstic,lots of people ask about it.Just need to add the BBK headers to finish it off.

    Ranchman

    Year: 1992 Submodel: Other Kenora,Ontario,Canada

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    July 27, 2012

    The Right Stuff

    Everything you need is in the box. Fits with all factory brackets and hangers. Sounds great! I haven't used my radio since the install; I just listen to the car. Good Flowmaster sound w/o being too obnoxious. http://youtu.be/gs4-YuyKXH4 The video doesn't do it justice but take a look anyway.

    BiminiBlue92

    Year: 1992 Submodel: Other Reading, PA

    Helpful (1) (0)

  • 4/5

    Installation Time: Afternoon

    February 14, 2012

    Installation on a 93 Cobra

    The product came packaged very well with little chance of damage happening during shipment. I purchased this kit for installation on my 1993 Cobra and although it is not mentioned on the application guide it does fit with a very, very slight adjustment to the tail pipe hanger brackets. The system went in very easy and fit very well. The slight adjustment is done to the tail pipe hanger bracket which allows the tips to clear the rear skirt. I trimmed the tab of the bracket that installs into the frame to allow a very slight pivot down which in turn allowed a slight drop (approx 1/8”). The sound is great, not overwhelming but a very attractive tone and growl when throttled up. I am very happy with the product…

    Geee

    Year: 1993 Submodel: Cobra OC

    Helpful (1) (0)

  • 4/5

    Installation Time: Afternoon

    May 02, 2014

    Sounds Great, But....

    The sound is pretty sweet after a lengthy install on these bad boys. My main problem was the clamps they sent with it. I definitely recommend getting 3/8" clamps to replace the chinsy 1/4" ones they send with the system. Then you can get a good bite down without snapping them from the torque (like I did on one side). The other problem I encountered was the hangers coming off the mufflers and tailpipes don't have a head on them, like my stocker ones did, to keep from slipping off. After a mellow ride I checked them thoroughly for problems. I noticed on one side it slipped off the mounting hanger. To resolve this, I was fortunate to know a welder friend who welded washers to the ends of all the brackets to keep the rubber grommets from slipping off again. After some hit and miss, overall the sound is sweet...especially with the top down! The only other issue I have is why they have the tailpipes going on the inside of the mufflers verses the outer side. But oh well, sounds great and I'm happy. Speedy shipping as always through AM. Good luck and don't forget the 3/8" clamps!

    Tomicino

    Year: 1991 Submodel: Other East Troy, WI, USA

    Helpful (0) (1)

  • 5/5

    Installation Time: Less than 1 Hour

    August 01, 2012

    Great system!

    Had this system in for about a week and its great! Get lots of comments. Its not like super loud were your gonna wake the neighbors but its an awesome performance sound! unfortunately AM didnt have the stainless steel system just the aluminized steel one and me living in MN i had to get stainless but nonetheless this is a great exhaust system. Highly recommend

    MustangMike93

    Year: 1993 Submodel: Other Burnsville, MN, USA

    Helpful (0) (1)

  • 5/5

    Installation Time: Afternoon

    April 12, 2012

    CLassic Flowmaster Sound

    I put this onto the 86 after getting tired of the volume of the dumped dynomax race bullet mufflers. deffinately an improvement, much cleaner sound, and a lot less interior noise

    Robert

    Year: 1986 Submodel: Other Downingtown, PA

    Helpful (0) (1)

  • 4/5

    Installation Time: Afternoon

    March 27, 2012

    Great product

    I shopped around for a exhaust system and decided that the flow master system was the best product for the money. With their reputation you cant go wrong.

    cherryman

    Year: 1988 Submodel: Other tampa,fl.

    Helpful (0) (1)

  • 4/5

    Installation Time: Afternoon

    November 23, 2016

    Awesome!!!!

    Gives the true 90's mustang sound. I would have given it 5 stars but if your running anything over a 275 rear tire everything gets real cramped but other wise very happy with the polished tips. I would also get this system welded.

    John

    Year: 1989 Submodel: Other

    Helpful (0) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    October 14, 2016

    The classic musclecar sound i was missing

    This exhaust came really well packaged nice and shiny took about 30 minutes to install really easy and the sound is amazing my last ones where blown out like a tin can it was time to change them and now its less louder but the sound quality is at its finest. I live in canada and it took a week to get here pretty fast. Only think the passenger side muffler is vibrating against the frame a little self initiative help fixed the problem.

    93supercharged

    Year: 1993 Submodel: Other

    Helpful (0) (0)

  • 5/5

    Installation Time: Afternoon

    June 12, 2016

    American thunder car back

    I installed the American thunder 2 1/2 cat back exhaust in about two hours. The product went together great , but had to put a small weld around the tail pipe because of exhaust leak. I wanted the iconic fox body sound and I got it.

    Cbird

    Year: 1990 Submodel: GT

    Helpful (0) (0)

  • 3/5

    Installation Time: Less than 1 Hour

    April 20, 2016

    Fit great

    Great sound, easy to install. Only complaint was cheesy exhaust clamps, broke one and smashed my knuckles. One muffler had a slight dent, but I'm not picky.

    Copstang

    Year: 1992 Submodel: Other

    Helpful (0) (0)

  • 5/5

    Installation Time: Afternoon

    April 03, 2016

    Excellent sound

    Fit and finish excellent.Took a little tweaking to line but lined up perfectly. recommend installing band clamps instead of the supplied clamps for a cleaner finish . Along with a set of BBK shorty headers and Mac Pro-Chamber exhaust sounds awesome and not too loud.took about and hour to install.

    Dannyboy

    Year: 1992 Submodel: Other

    Helpful (0) (0)

  • 5/5

    Installation Time: Afternoon

    August 27, 2015

    Couldn't be happier.

    Paired this with a HP catted midpipe. Sounds awesome!!

    Mike

    Year: 1986 Submodel: GT Eastampton, NJ

    Helpful (0) (0)

  • 5/5

    Installation Time: Afternoon

    June 20, 2015

    Awesome sound!

    This is the reason the mustang has that iconic sound. These are a must have for anyone looking to make their car loud. Great flowmaster quality and fit.

    JustinN61

    Year: 1992 Submodel: GT Gilbertsville, PA

    Helpful (0) (0)

  • 5/5

    Installation Time: Afternoon

    December 29, 2014

    Flowmaster American thunder

    Great exhaust, purchased this for my 92 lx and American Muscle got it to me in about 2 days. The install was straight forward taking a little over an hour with basic hand tools. The system looks great and sounds even better. I def recommend this system for anybody with a fox mustang looking for some mean grunt.

    Mean92347

    Year: 1992 Submodel: Other New York

    Helpful (0) (0)

Related Mustang Categories