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MAC Cat-Back Exhaust w/ X-Pipe (15-17 V6 Fastback)

Market Price $1,027.12 You Save 12% ($118.17)
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  • Item 389973

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    Features, Video & Details

    • Aggressive Muscle Car Sound
    • Improves Exhaust Flow for More Power
    • Stainless Steel Construction
    • 4" Polished Stainless Steel Tips
    • "Flow Path" Chambered Mufflers
    • X-Pipe Included
    • Fits 2015-2017 V6 Fastback Mustangs

    Review & Installation Video

    Review & Install Video

    Improves Performance and Sound. Give your 3.7L powered S550 Mustang an aggressive exhaust note, while improving its performance at the same time with a MAC Performance Cat-Back Exhaust System. Not only does this MAC Exhaust System sounds great, but the included x-pipe improves the exhaust flow to reduce back pressure, which provides an increase in horsepower and torque at the rear wheels.

    Race Car Growl. The included MAC Performance X-Pipe not only increases the horsepower and torque of your S550 Mustang, but it also adds a crisp raspy race car growl to the sound of your exhaust with its modern "X" crossover pipe design - a sound that the stock factory "resonator" just can't match.

    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. Constructed from mandrel bent stainless steel tubing for superior strength and corrosion resistance, this MAC Performance Mustang Cat-Back Exhaust System features two "Flow Path" chambered mufflers that end with massive 4" diameter polished stainless steel slant cut exhaust tips for impressive muscle car looks and sound.

    Direct Bolt-On Install. The MAC Performance Cat-Back Exhaust with X-Pipe includes all the hangers and clamps necessary to bolt straight up in the OEM factory location without any modifications required, making it a direct fit, bolt-on replacement upgrade.

    Application. This MAC Performance Cat-Back Exhaust with X-Pipe is specifically designed to fit all 2015-2017 V6 Fastback Mustangs equipped with the 3.7L V6 engine. Not compatible with convertibles.

    Fitment: 2015 2016 2017 Details

    MPN# TKX3715

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Right Muffler Assembly
    • (1) Left Muffler Assembly
    • (1) Right Tailpipe Assembly
    • (1) Left Tailpipe Assembly
    • (1) X-Pipe
    • (4) Clamps
    Installation Info
    Tech Specs
    Cat-Back Exhaust Specifications
    Piping Material: Stainless Steel Tip Material : Polished Stainless Steel
    Piping Size: - Tip Size: 4"
    Muffler Type: Chambered Muffler Fitment: 2015-2017 V6 Fastback
    Will it fit my Mustang?

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    Customer Reviews (6) Write a Review

    Overall Rating 4.3

    out of 5 stars

    Installation Time:Afternoon

    Installation Cost:$100-$250

    • Loudness / Volume 4.4 4.4
    • Exhaust Note 4.6 4.6
    • Fit & Finish 5 5
    • Bang For Your Buck 4.6 4.6

    • 3/5

      July 14, 2018

      2017 Mustang Exhaust

      The installation was simple just like the video said about the right amount of time only problem with this system are all the clamps they provide. Way to small and not strong enough to hold 2.5 pipe. I suggest that you buy better clamps for your exhaust or the pipe will turn and burn your plastic coming out the rear I know firsthand besides that sounds good and looks good. This my seventh upgrade with them I still have more to do. Ken Virginia


      Year: 2017 Submodel: V6

      Helpful (3)

    • 5/5

      Installation Time: Afternoon

      July 09, 2018

      Mac attack on the V6

      it doesnt seem to be as quiet in the cabin as advertised. sounds like a V8 for sure. Has a rasp (metal on metal as others explain that are oblivious) sound at high rpm s. i really like the sound. sounds mean.


      Year: 2017 Submodel: V6

      Helpful (4)

    • 5/5

      Installation Time: Less than 1 Hour

      March 20, 2018

      This is a great sounding exhaust.

      I've got some friends that have the borla exhaust and the Flowmaster exhaust. Magnaflow... Yatta yatta. This exhaust sounds better.


      Year: 2017 Submodel: V6

      Helpful (6)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      May 13, 2017

      Serious sounds

      For the price you can't beat it. After reading the reviews and looking around I decided to try this cat back. Definitely in love. Took a shop about an hour and a half to install. The clamps aren't very great though and the was some play in the exhaust at the fittings so the shop welded it in those places. It has a nice deep tone. It is quite loud inside as of now. Not sure if the drone will go away after a while or if I'll just get used to it but for the price you really can't beat it. MAC definitely did it right.


      Year: 2017 Submodel: V6

      Helpful (7)

    • 5/5

      Installation Time: Less than 1 Hour

      March 09, 2017

      Sound good once they have broken in

      Had this cat-back installed at Midas and they had no issues getting this installed and aligned within 45 minutes. The mechanic actually said this kit was the best fitting he had seen so far on the new Mustangs. After about 500 miles the drone on these calmed down quite a bit. The drone is almost completely gone now that I have an Airaid Cold Air Intake installed. Nice throaty exhaust note.


      Year: 2016 Submodel: V6

      Helpful (7)

    • 3/5

      August 04, 2016


      The exhaust is great, it gives that muscle car tone to your v6, its loud and agressive, so i personally love it. However, it has too much drone and i believe this is due to the muffler systems. You can barely have a conversation inside the car and i mean this when cruising; it gets really annoying. The exhaust tips also stick out about 2" compared to the stock tips. But keep in mind this is an $800 exhaust and almost none other come with an xpipe for your v6.


      Year: 2015 Submodel: V6

      Helpful (7)

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