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MAC Off-Road Cat Delete Pipes (11-14 GT)

Market Price $168.32 You Save 12% ($19.37)
Our Price

$148.95 (pair)

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  • Item 398831
  • MPN# 45012

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Ship to: Ashburn - 20149
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    Features & Details

    • Off-Road Cat Delete Pipes
    • Aggressive Performance and Sound
    • Removes Air Flow Restrictions
    • Heavy Duty 409 Steel Construction
    • Deletes Catalytic Converters
    • Straightforward Installation
    • Limited Lifetime Warranty
    • Not CARB Certified
    • Fits 2011-2014 Ford Mustang GT Models
    Off-Road Performance. Take Track Day to a new level with your 2011-2014 Ford Mustang GT when you install the MAC Off-Road Cat Delete Pipes. Replacing your catalytic converters with these pipes adds horsepower and enhances the sound of your Mustang, but is not street legal.

    Durable Construction. These pipes are constructed from the same 409 stainless steel that is used in most high quality and high performance exhaust systems, so no weaknesses are introduced to your exhaust system when using these pipes in place of your cats. Mandrel bending ensures an “always been there” fit.

    Bolt-On Installation. Installation is easy and straight forward. These pipes can be attached with clamps so no welding or cutting is required. The same materials are used in these pipes so the 3 in. pipes should fit seamlessly with your existing exhaust.

    Not Street Legal. In most states, removing the catalytic converters from exhaust systems is illegal. These pipes are intended for off-road use only.

    Limited 1-Year Warranty. MAC Performance warrants their products for 1 year from date of purchase against defects in workmanship and materials.

    Application. The MAC Off-Road Cat Delete Pipes fit 2011-2014 Ford Mustang GT models.

    Fitment: 2011 2012 2013 2014 Details

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (2) Cat Delete Pipes
    Installation Info
    Tech Specs
    Will it fit my Mustang?

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    Questions & Answers (5)

    5 Top Rated Questions

    i have kooks LT headers with high flow catted X. will this work with this headers? if not, what will? dont want to have to cut them out and then regret it after, and have to repeat the process. thanks

    • The MAC Off-Road Cat Delete Pipes are meant for the stock mid pipe only. At this time we do not carry any delete pipes for the Kooks High Flow Catted X-pipe, other than replacing the X completely with a Kooks Off-road X-pipe, or having custom delete pipes made.

    Helpful (1)

    Is it completely necessary to get a tune after installing these? I wouldn’t mind having the engine light on and later down the road I am planning to get a tune to make it more efficient, but would it mess up the car without a tune or can I run it like that? And I know gas mileage would go down

    • While not 100% necessary to install a tune for the vehicle to run and function, it is strongly recommended for proper operation.

    Helpful (0)

    Will this fit my v6 2011 mustang?

    • The MAC cat delete pipes are designed to fit 11-14 GT models only. They will not work with a 2011 V6.

    Helpful (0)

    Do these cat deletes come with gaskets where the headers connect with the cat deletes?

    • The MAC Off-Road Cat Delete Pipes would not come with gaskets no.

    Helpful (0)

    Will this throw the check engine on

    • The MAC Off-Road Cat Delete Pipes will remove the factory catalytic converters which will immediately trigger the vehicles check engine light. Removal of catalytic converters will fail emission tests in most states (Please check local regulations). However, you can purchase a handheld tuner which will eliminate the check engine light from your dash board (This will not void the failure of a state emissions test).

    Helpful (0)
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    Customer Reviews (4) Write a Review

    Overall Rating 2.8

    out of 5 stars

    Installation Time:Full Day

    Installation Cost:$100-$250

    • Loudness / Volume 4.5 4.5
    • Exhaust Note 4.75 4.8
    • Fit & Finish 3.75 3.8
    • Bang For Your Buck 4.5 4.5

    • 1/5

      Installation Time: Full Day

      June 26, 2018

      Won't fit

      These will not fit, they are too short. It took hours to get them to try and fit and ended up sending them back.


      Year: 2012 Submodel: GT

      Helpful (8)

    • 1/5

      February 28, 2018

      Bad fitment

      I bought these for my 2014 Mustang GT. The passenger side bolted up perfectly, but the driver side was not bent correctly to align from the manifold to the mid pipe. We had to cut the pipe in half and weld it back together at the right angle in order to bolt up correctly. Very frustrating process that we should not of had to do. Would not buy these again because of that.


      Year: 2014 Submodel: GT

      Helpful (9)

    • 4/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      January 17, 2018

      Sounds great an good power gain

      Love the Mac cat deletes, they sound very aggressive paired with my Flowmaster outlaw catback and decent power gain too!


      Year: 2014 Submodel: GT

      Helpful (10)

    • 5/5

      Installation Time: Less than 1 Hour

      January 11, 2018

      Sounds good

      Bolted right up only thing comes with no hardware so the mid pipe is going to have to be welded due to the clamp only tightened the cat delete n not mid pipe because it’s smaller, but sounds good not annoying loud in side the car...


      Year: 2011 Submodel: GT

      Helpful (12)

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