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Flowmaster American Thunder Cat-Back Exhaust (94-97 GT, Cobra)

Item 18406
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Ship to: Ashburn - 20149
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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Aggressive Flowmaster Sound.
      • Super 44 Series Mufflers.
      • 2.5" Polished Stainless Steel Tips.
      • Mandrel-Bent Tubing.
      • Durable Aluminized Steel Construction.
      • Fits 1994-1997 GT and SVT Cobra Mustangs.


      Flowmaster Sound .The Flowmaster American Thunder Cat-Back exhaust system with its mandrel bent tubing will improve your 1994-1997 GT or Cobra 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 Cat-Back features Super 44 Series chambered mufflers with 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 1994-1997 GT and the 1994-1997 SVT Cobra Mustangs for both great looks and great sound. Includes hangers and all necessary hardware for installation.

      Fitment: 1994 1995 1996 1997 Details

      MPN# 17212

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (47)

      Write a Review

      Ratings Summary

      4.5 out of 5 overall rating from 47 customers

      Installation Time: Full Day

      Installation Cost: $100-$250

      • November 06, 2018

        5 1996 Cobra - StevenS Installation Time: Less than 1 Hour

        Awesome exhaust

        Installed very easily with no issues sounds amazing. Really happy with the outcome.

        Helpful (3)
      • September 22, 2018

        5 1994 GT - JaimeF Installation Time: Shop Install Installation Cost: $100-$250


        They are all I expected, you can heard the Ford thunder sound from the 5.0 .thank you

        Helpful (3)
      • August 15, 2018

        5 1994 GT - RyanS Installation Time: Less than 1 Hour

        Classic Mustang Sound

        This is the best exhaust for the old 302! This catback alone is suprisingly quiet, but with an offroad mid pipe this makes the car a growling beast!

        Helpful (4)
      • August 11, 2018

        1 1995 GT - FrancoH Installation Time: Afternoon

        Sounds geeat

        Exhaust tip fell off. Clamps are a poor quality. Have to bring it to an exhaust shop for proper installment.

        Helpful (4)
      • December 03, 2017

        5 1994 GT - NicholasB Installation Time: Afternoon

        Classic Mustang Sound

        Great looking and sounding exhaust. Fit on the mustang perfect!

        Helpful (6)
      • June 22, 2017

        3 1996 GT - NickS Installation Time: Afternoon

        fits nice but creates a bad exhaust drone

        fits very nicely under my 96 mustang gt but compared to a magnaflow exhaust that i had on it before this exhaust is twice as loud and sounds a little too pop-can like. it also creates a horrid exhaust drone at around 2000 rpm (highway speeds) that is super annoying. i should've stuck with magnaflow and spent the extra money.

        Helpful (6)
      • June 17, 2017

        5 1995 GT - JohnK Installation Time: Less than 1 Hour

        Sounds Awesome!

        95 GT, Stock headers, BBK offroad H pipe, Sounds like a Mustang should. Flanges on the mufflers had to be opened a bit to fit H pipe, and unlike some others experience, had to cut off about an inch for overall fit. Shop installed about an hour. Love the way it sounds.

        Helpful (5)
      • May 03, 2017

        3 1994 GT - DalonP Installation Time: Full Day

        problems i found

        i thought it would be easy for me to install...but it was..the hangers didnt match everywhere . and the flanges werent completely shaped ended up having to take to muffler shop to have tweeked.

        Helpful (5)
      • April 17, 2017

        5 1995 GT - Jacob Installation Time: Afternoon

        Sounds great

        Sound is exactly what i was looking for...... ............

        Helpful (9)
      • November 08, 2016

        5 1995 GT - MRJAY Installation Time: Shop Install Installation Cost: 0-$100



        Helpful (7)

      Questions & Answers (9 answers)

      5 Top Rated Questions

      Is this compatible with the Flowmaster catted H-pipe?

      • The Flowmaster American Thunder Cat-Back Exhaust (94-97 GT, Cobra) will not be a direct bolt on with the Flowmaster Catted H-Pipe (94-95 5.0L), item # 18468, ( The Cat-Back Exhaust features 2.5" 16 gauge tubing while the H-Pipe has a 2.25" 16 gauge tubing. These can be installed together with some modifications and welding which we recommended having done professionally.

      Helpful (1)

      What’s the difference between this one and the other American Thunder for $439?

      • It's actually just Flowmaster making two versions of the same exhaust.

      Helpful (0)

      How is the clearance on a 97 cobra with 10.5 deep dish rims?

      • This exhaust will work just fine with those wheels installed.

      Helpful (0)

      How much HP can it add to a 97 GT?

      • Unfortunately cat-back exhausts generally do not increase performance. Only the overall exhaust tone of the vehicle.

      Helpful (0)

      Does this not fit the 98 mustang gt?

      • This Flowmaster American Thunder Cat-Back exhaust system is designed to fit the 1994-1997 GT and the 1994-1997 SVT Cobra Mustangs only and will not work on the 1998 models.

      Helpful (0)
      Post Your Question
      4 More Questions
      Does this not fit with the 98 mustang get? 1 answer
      Is this cat back carb legal? 1 answer
      I am looking to pair this with a BBK off road H pipe on my 95 Cobra. Are there any known fitment issues? Looks to be pretty easy to install but would like to know if there are any surprises to be made aware of. 1 answer
      will this fit on a 94 gt convertible 2 answers

      Installation & What's in the Box

      Installation Info

      What's in the Box

      Hardware included:
      • (2) Mufflers
      • (2) Tailpipes
      • (1) Parts Kits
      • (2) Saddle Clamps
      • (4) Hanger keepers
      • Installation instructions

      Tech Specs

      Cat-Back Exhaust Specifications
      Piping Material: Aluminized Steel Tip Material : Polished Stainless Steel
      Piping Size: 2.5" Tip Size: 2.5"
      Muffler Type: Chambered Fitment: 94-97 GT and Cobra Mustangs

      Will It Fit My Mustang

      • Cobra - 94, 95, 96, 97
      • Cobra R - 95
      • GT - 94, 95, 96, 97

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