(approx) 2 Hours
Simple installation for anyone.
Features, Description, Reviews, Q&A, Specs & Installation
Fitment: 1986 1987 1988 1989 1990 1991 1992 1993 Details
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
(approx) 2 Hours
Simple installation for anyone.
What's in the BoxHardware included:
|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|
May 03, 2020
Fitment was tough...
Mufflers and cat-back piping fit fine, the tailpipes were a bear to try and wrestle into place and ended up with 1 pipe slightly canted. They soud awesome though, worth the price. I suggest doing them on a lift because you just can't seem to get enough leverage while underneath it on jack stands.Helpful (0)
March 20, 2019
Worked well on my car. Will buy again from American muscle. Very reliable parts. Thank youHelpful (0)
February 26, 2019
Went from having catted H pipe with slp1 to xpipe and American thunder cat back. This was def the iconic sound I was looking for. My only issue was the clamps that came with it were useless snapped both of them.Helpful (1)
December 16, 2018
I recently purchase this exhaust system and was a little skeptical at first but after having it installed I was very satisfied. I found it to be not that loud but just rightHelpful (4)
September 18, 2018
I wanted my stang to be louder so I purchased this exhaust system. I didn't need at as mine was already a flowmaster system and was in great shape, I think a sale on the American Thunder made me do it. Anyway, I truly believe I have lost some power, exhaust is loud, at certain steady speeds it resonates inside the car and you either have to speed up or slow down to get rid of that. They are fine but I should have stayed with my other exhaust.Helpful (3)
August 21, 2018
4 Star kit with 5 Star sound!
Pros: 1. If you want that amazing "Flowmaster" exhaust note then you have found it. The Super 44's blow away the 40 Series in my opinion. They are a good bit louder but the tone is amazing throughout the entire RPM band. 2. The chrome finish on the tails is extremely nice. Cons: 1. Be prepared to make a trip to the muffler shop. The mufflers need to be opened up on the tail pipe ends so the tails will slip inside of them. Errr! 2. Don't even think about using the wimpy 1/4" clamps that come with the kit. Go to the parts store and pick up some 3/8" clamps for a few bucks. The 1/4"ers will snap easily.Helpful (5)
February 01, 2018
The Real Deal
I wanted to make my 1986 5.0 GT look right, sound right, and feel right. This product gave me everything I wanted. When a Fox body Mustang looks right with the polished underhung exhaust tips, sounds just right with the unmistakable ear pleasing Flowmaster Mustang growl, then it magically feels better all over - and so do I! Thanks American Muscle!Helpful (8)
December 18, 2017
Paired with the Mac Off-road H pipe sounds amazing! True Foxbody sound that we all have come to love! This exhaust is a great set up and fits nicely but you do have to take your time and put it all in and together and make sure clearance is good before tightening anything! My only complaint is my drivers side tip sticks out a half inch further than right side so will have to take to exhaust shop and have them cut 3/8 to 1/2 inch off the part that goes into muffler to get it to match! Takes a full day to install it and H pipe and you will need to either have a lift or jack that will raise it high enough to route tail pipe over axle, I had to take it to mexhanic with lift to get them to install tail pipes due to this issue.Helpful (7)
November 23, 2016
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.Helpful (7)
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.Helpful (7)
My car currently has coilovers in the factory shock mounting location. Will I be able to run tailpipes?
I have a 1989 LX 5.0 with all stock exhaust currently. I see the Flowmaster American Thunder Cat-Back Exhaust w/ Polished Tips (87-93 LX; 1986 GT) kit is 2-1/2" diameter. I believe that my stock exhaust is 2-1/4" diameter. How does this work with your product? Thank you very much. Jay
The Flowmaster American Thunder Cat-Back Exhaust uses exhaust uses 2 1/2" tubing, however the flanges are designed to mate to the flanges on the OEM 2 1/4" exhaust.
Will this fit on a 1993 Mustang LX 2.3?
Hello! The Flowmaster American Thunder Cat-Back Exhaust will only fit on a V8 LX
Fitment question Will this catback kit mate up with the bbk catted h pipe and stock headers on my 89 Lx 5.0 ??
Yes it will, direct bolt on.
will this fit an lx shorty catted x pipe?
if u have long tube headers into that shorty xpipe then yes this should fit on ur stang
We only have this exhaust available with the Flowmaster etched along the side of the tips. Hope this helps!
Fits 1986 GT and 1987-1993 LX Mustangs