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MAC Pro Chamber Mid Pipe (11-14 GT)

Item 40080
AmericanMuscle no longer carries the MAC Pro Chamber Mid Pipe (11-14 GT). Please check out 2015-2021 Mustang Mid-Pipes Exhaust for an updated selection.
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    Product Information

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


    • Converts Factory "H" Pipe to a Pro Chamber
    • Improves Exhaust Flow and Sound
    • Stainless Steel Construction
    • Reuses Stock Catalytic Converters - Smog Legal
    • No Cutting Required
    • Fits 2011-2014 GT Mustangs


    Increase Exhaust Flow. Ford did a decent job on their new catalytic converters, but the stock H-Pipe is pretty restrictive. That's where the MAC Performance After Cat Mid-Pipe comes into play. Featuring MAC's unique Chamber style crossover and free-flowing mandrel-bent piping, this Mid Pipe will dramatically improve exhaust flow for more power and sound.

    Muscle Car Rumble. This free flowing MAC Performance Mid Pipe not only increases the horsepower and torque of your Mustang, but with its unique Pro Chamber cross over design it adds a distinctive muscle car rumble to the sound of your exhaust, that the standard H-Pipe just can't match.

    Compatible With Stock Cats. The MAC Pro Chamber Mid-Pipe bolts up directly behind the stock catalytic converters with no cutting required saving you time and money. By reusing your stock catalytic converters you ensure that Mustang is smog-legal.

    High Quality Construction. Constructed from durable 2.5" diameter stainless steel tubing, this MAC Performance mid pipe is CNC mandrel bent to ensure maximum exhaust flow, so there are no kinks to rob you of power.

    Application. The MAC Performance Pro Chamber Mid-pipe is designed to be a direct bolt-on for the 2011-2014 5.0L GT Mustangs with either aftermarket short tube headers or the stock manifolds installed. Reuses the stock Catalytic Converters.


    CA Residents: WARNING: Cancer and Reproductive Harm -

    Installation & What's in the Box

    Installation Info

    What's in the Box

    • (1) Mid-pipe

    Tech Specs

    Mid Pipe Specifications
    Style Mid Pipe: Standard "X" Type Headers Required: Shorty or Stock Manifolds
    Piping Material: Stainless Steel Piping Size: 2.5"
    Catalytic Converter: Reuses stock Catalytic Converters Fitment: 2011-2014 GT

    Customer Reviews (100+)

      Questions & Answers

      10 More Questions