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MAC Boom Tube Cat-Back Exhaust (79-93 LX; 94-95 GT; 94-04 V6)

Market Price $568.99 You Save 12% ($66.04)
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$502.95 (kit)

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  • Item 401063
  • MPN# BT9400

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    Features & Details

    • Bring Out the Inner Monster in Your Mustang
    • Stainless Steel Components, Mandrel-Bent for Maximum Performance
    • 2.5" Pipes
    • Heavy, Powerful Exhaust Notes
    • Rolled 4" Exhaust Tips
    • Twin MAC Performance Mufflers
    • Bolt-On Installation
    • One-Year Warranty
    • Fits 1979-1993 LX, 1994-1995 GT and 1994-2004 V6 Mustangs
    Hear Your Mustang Roar. Making a Ford Mustang sound good is easy. However, bringing that sound to work for your Pony is something completely different. But with the MAC Boom Tube Cat-Back Exhaust system, your exhaust is going to provide powerful boosts in performance and overall sound quality.

    Superior Components. This exhaust system is crafted from 2.5-inch mandrel-bent stainless steel tubing. Bringing together durable and strong pipes and bending them for maximum performance will net you a huge increase in airflow, meaning you're going to see boosts to horsepower and torque as well. And the four-inch exhaust tips provide a rolled, angle-cut look to give your system great looks as well.

    Belt out the Low Notes. Powerful sound from your cat-back exhaust is delivered through twin straight-through mufflers and shot straight through the polished, stainless steel 4-inch exhaust tips. You're going to get a massive boost in exhaust notes by this system, a deep and aggressive rumble when idling and a powerful roar that hits you in the gut when you hit the gas.

    Bolt-On Installation. This cat-back exhaust installs with no modification or drilling to your Mustang, You'll need hand tools, jack stands or a car lift, and a friend to help you hold things in place as you work. It should only take about two hours.

    One-Year Warranty. This cat-back system is protected by MAC's one-year warranty against manufacturer's and material defects.

    Application. This MAC Boom Tube Cat-Back Exhaust is designed to fit 1979-1993 LX, 1994-1995 GT and 1994-2004 V6 Mustangs.

    Technical Note. To use this MAC Cat-Back Exhaust on a V6 Mustang, you will need to use an H-Pipe. You will also need to get the following Parts as they are not included with the Cat-Back Exhaust (for the V6 Only):
    • Passenger Side Muffler Hanger: Ford Part # E6ZZ-5C263-A
    • Driver/Passenger Side Exhaust Tip Hanger: Ford Part # F4ZZ-5A246-B

    Fitment: 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 Details

    What's in the Box
    • (2) Mufflers
    • (2) Exhaust Tips
    • 2.5" Piping
    • Mounting Hardware
    • Installation Instructions
    Installation Info
    Will it fit my Mustang?

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    26 Questions / 24 Answers

    Ask a Question

    Can you hook up this exhaust up to the Pypes Catted X-Pipe (04 v6) mustang?


    • The MAC Boom Tube Cat-Back Exhaust can be used in conjunction with the Pypes Catted X-Pipe for the V6.

      Rob D

    Helpful (4)

    Can you use the Pypes Catted X-Pipe along with this exhaust? If you can how much HP can you expect with this exhaust? I have not added anything to my car. It is still stock. Thank you.


    • The MAC Boom Tube Cat-Back Exhaust can be used with the Pypes Catted X-Pipe. Power gains will vary based on existing modifications, as well as your year and engine, but on average, both parts together will show approximately 15hp gains.

      Rob D

    Helpful (3)

    Will this bolt right to the stock cats or do I need to get an aftermarket x-pipe


    • This MAC Boom Tube Cat-Back Exhaust will bolt up to the factory mid-pipe.


    Helpful (1)

    Will this sound deep and loud for a 2000v6 or only a gt mustang


    • Yes. This MAC Boom Tube Cat-Back Exhaust will have heavy, powerful exhaust note. Very aggressive!


    Helpful (1)

    Does they come with an attachment to bolt on to the factory Y-pipe, or will you have to buy a separate piece?


    • The MAC Boom Tube Cat-Back Exhaust will be a direct bolt on to the factory exhaust.No modification or drilling/welding.


    Helpful (1)

    What kind of sound will this make?


    • The MAC Boom Tube Cat-Back Exhaust will produce a deep aggressive rumble, along with a powerful roar. This will produce heavy, powerful exhaust notes.


    Helpful (1)

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    Customer Reviews (4) Write a Review

    Overall Rating 5.0

    out of 5 stars

    Installation Time:Weekend

    Installation Cost:$100-$250

    • Loudness / Volume 5 5
    • Exhaust Note 5 5
    • Fit & Finish 4.75 4.8
    • Bang For Your Buck 4.5 4.5

    • 5/5

      Installation Time: Afternoon

      May 28, 2018


      I have mine straight piped with no cats and it is so loud it's almost deafening at about 3-4k rpm's! The downshift sounds extremely good, lots of pops and crackles! Just very loud! I absolutely love them!!


      Year: 2000 Submodel: V6

      Helpful (0)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      May 21, 2018

      What a Difference

      I paired this Cat-Back with a catted X-Pipe made from Pypes. Man.... this exhaust is the real deal. I was a little hesitant at first because I was worried about the back pressure. If you have cats, you should be fine in my opinion. The acceleration is not hampered THAT MUCH. Sound wise this exhaust is incredible. The note coming from this is so open and large. The pitch definitely decreased and it sounds great. Paired with an X-Pipe, it creates a nice open throaty sound. In my opinion, you get the best of both worlds; Performance from the X-Pipe and the open sound from the exhaust. This combo works really nicely. Performance wise, this exhaust makes it easier to climb up the RPM ladder. More air flow usually means more power, and I definitely saw that here. The Styling is beautiful. Going from a single exhaust to dual exhaust is such a game changer. Not only does it look better, it sounds and performs better. Every Mustang should have duals. Overall this was a great exhaust and will truly make a difference in your driving experience.


      Year: 2000 Submodel: V6

      Helpful (1)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      April 07, 2018


      These got my me feeling like I'm in Fast and Furious when paired with MAC H-pipe and MAC longtube headers they're loud asf fr like wow the v6 sound like a monster right now at low rpms best purchase period I'm EXTREMELY HAPPY


      Year: 2002 Submodel: V6

      Helpful (10)

    • 5/5

      Installation Time: Full Day

      January 10, 2018

      Mac boom tube

      It’s the loudest it very awesome !! You can’t go wrong buying this exhaust. It was very simple putting it on it took almost the whole day. Make sure your exhaust is very cool and if it ain’t have a spray water bottle to let it cool.


      Year: 1998 Submodel: V6

      Helpful (28)

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