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MAC Cat-Back Exhaust (87-93 GT)

Item 40079
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      Product Information

      Features, Description, Reviews, Specs & Installation


      • Aggressive Muscle Car Sound
      • 2.5" Mandrel-Bent Tubing
      • 2.5" Turned Down Tips
      • Durable Aluminized Steel Construction
      • "Flow Path" Chambered Mufflers
      • Fits 1987-1993 GT Mustangs


      Aggressive Throaty Sound. Add a throaty muscle car exhaust note to your 5.0L GT and improve the exhaust flow at the same time with a MAC Performance Cat-Back exhaust system from AmericanMuscle.

      Flow Path Mufflers. MAC Flow Path Chambered Mufflers feature a patented multi passage design, following Helmholtz's Theory of Tone, to produce a muffler that effectively flows exiting exhaust gases all while maintaining a desirable tone. With no packing that can burn out, Flow Path Mufflers will sound the same mile after mile, year after year.

      High Quality Construction. Mandrel bent from durable 2.5" aluminized steel tubing for strength and corrosion resistance, this MAC Performance Cat-Back features two "Flow Path" chambered mufflers with turn down tips to match the original factory GT appearance.

      Application. This MAC Performance Cat-Back exhaust system is specifically designed to fit the 1987-1993 5.0L GT Mustangs.

      Fitment: 1987 1988 1989 1990 1991 1992 1993 Details

      MPN# TK8725

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (15)

      Write a Review

      Ratings Summary

      4.6 out of 5 overall rating from 15 customers

      Installation Time: Afternoon

      Installation Cost: $100-$250

      • April 12, 2019

        2 1993 GT - Trigr1 Installation Time: Less than 1 Hour

        Poor fitting!!!

        Exhaust sounds good but the tailpipes hit in the rear on the control arms!! Wanted the dumps but they where out of stock. Didn’t have all of the hardest with it as well. Had to reuse some of my old stuff!

        Helpful (1)
      • April 21, 2018

        4 1987 GT - AnthonyM Installation Time: Afternoon

        Mac cat back

        Love it great sound little hard to install But not bad

        Helpful (7)
      • September 23, 2017

        4 1993 GT - MichaelP Installation Time: Afternoon

        Settling in...

        Install was a little tricky. Nothing indicates if two mid-pipes must go on certain sides, and no directions. They appear to be same shape. Take your time making sure the system clear all objects. Going from stock 2.25" to 2.5" makes spacing tighter. End tips did not turn out even on both sides, and mufflers ended up slightly cocked. Be prepared for the drone sound for long trips, even in 5th gear.

        Helpful (8)
      • June 23, 2017

        5 1989 GT - JohnL Installation Time: Afternoon


        I installed the cat back on my 89 gt . It was easy for the most part but it would of gone faster if there were instructions from the manufacture or even the pipes are marked for which side. The only thing that i notice is from the mid pipe to mufflers the bolts were hard tighten with a socket driver, if they were going the other direction it would help. Beside that I very pleased with install and sound.

        Helpful (7)
      • June 18, 2017

        5 1992 GT - CoreyO Installation Time: Afternoon

        MAC RULES

        I loved the FlowMaster American Thunder until I bolted in the MAC. My car makes 302rwhp/328rwtq with a lumpy cam. Sounds nasty at idle and awesome at WOT. The exhaust is well designed with ball fittings. It fit like a glove even with 275/40's on 10 inch wheels. They take the time to even brush rust inhibitor on the welds. MAC knows the 5.0. The FlowMaster is a great choice but the MAC fits so much better and sounds way better at idle. MAC #1!!

        Helpful (8)
      • March 13, 2017

        5 1987 GT - Stevew Installation Time: Less than 1 Hour

        Great exhaust system

        Easy to put on and adjust, Like that nothing has to be welded

        Helpful (8)
      • October 22, 2016

        5 1992 GT - nick Installation Time: Less than 1 Hour


        i pulled out my old flowmasters and replaced them with the mac catback exhaust system. The mac sounds wayy better than the flowmasters!! 100 would recommend!!

        Helpful (10)
      • September 04, 2016

        5 1992 GT - FOXROD

        MAC Flowpath Exhaust

        Installed on 92 GT along with a MAC H-Pipe. Removed complete factory system. Loved the ball and socket connections which allow great adjustability and ease to remove when necessary. Mufflers tucked up nice and high and aligned with hangers perfectly. Sound - slightly deeper at idle " quieter then Flowmasters I have used" and come alive at wide open throttle, similar to Fowmaster Force Ii system. Love it, not to abnoxius but aggressive under full throttle.

        Helpful (10)
      • June 05, 2016

        5 1990 GT - Jr Installation Time: Less than 1 Hour


        I really like this over the flow masters it still has that awesome muscle car sound without the really high pitch rasp at high rpm good quality kit fit really nice

        Helpful (9)
      • March 25, 2016

        5 1988 GT - mustangman Installation Time: Less than 1 Hour

        very nice exhaust

        Easy installation. Sounds good with my bbk equal length shortly headers and my bbk off road x pipe. Very crisp and loud when you stab into it. Good deal for the price..

        Helpful (9)

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      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (2) Muffler assemblies
      • (2) Over axle pipes
      • (2) Exhaust Tips
      • Installation hardware

      Tech Specs

      Cat-Back Exhaust Specifications
      Piping Material: Aluminized Steel Tip Material : Aluminized Steel
      Piping Size: 2.5" Tip Size: 2.5"
      Muffler Type: Chambered Fitment: 1987-1993 GT

      Will It Fit My Mustang

      • GT - 87, 88, 89, 90, 91, 92, 93

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