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Dynatech 1-7/8 in. SuperMAXX Long Tube Headers (11-17 GT)

Market Price $1,129.99 You Save 12% ($130.00)
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  • Item 394267

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Ship to: ashburn - 20149
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    Features & Details

    • Increases of 32 Horsepower and 20 lb/ft Torque
    • Long Tube Header Design
    • Free Flowing 1-7/8" Primary Tubing
    • 3” Collectors
    • Mandrel-Bent Stainless Steel Construction
    • Intended for Off-Road, Track Use Only
    • Requires a Dynatech Mid-Pipe and a 3 in. Cat-Back
    • Fits 2011-2017 5.0L GT Mustangs
    Horsepower and Torque Increase. Add 32 horsepower and 20 foot pounds of torque to your 2011-2017 Mustang GT by replacing the factory manifolds with these Dynatech SuperMAXX Long Tube Headers. These headers are a huge horsepower upgrade and a performance tune after the installation can take it to the next level with additional power.

    Durable Construction. Constructed utilizing high-grade stainless steel material, these Dynatech SuperMAXX Long Tube Headers are made to last for miles to come. The headers are rust resistant to withstand the elements and the header gaskets are constructed from triple layer stainless steel to increase the durability level. These Dynatech SuperMAXX Long Tube Headers are backed with a limited lifetime warranty.

    Installation. When it comes to the installation process, these Dynatech SuperMAXX Long Tube Headers are a bolt-on performance upgrade replacing the factory manifolds. All of the required mounting hardware, O2 extension cables and a detailed instruction manual is included.

    Calibration Required. Installation of these Long Tube Headers will require the use of a Handheld Tuner to reprogram your Mustang's computer (ECU) for proper operation. By reprogramming the ECU, you will be able to realize the full power potential that these Long Tube Headers have to offer.

    Application. These Dynatech SuperMAXX Long Tube Headers are designed to fit 2011 to 2017 GT Mustang models equipped with the Coyote 5.0L V8 engine.

    Please Note. These Dynatech Long Tube Headers will require the use of a Dynatech shorty style Mid-Pipe and a 3 inch Cat-Back Exhaust system for proper installation.

    Fitment: 2011 2012 2013 2014 2015 2016 2017 Details

    MPN# 722-74310

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Right Side Header
    • (1) Left Side Header
    • (2) Header Gaskets
    • (2) O2 Extension Cable
    • Mounting Hardware
    • Instruction Manual
    Installation Info
    Tech Specs
    Header Specifications
    Header Type: Long Tube Type Mid Pipe Required: Shorty
    Material: Stainless Steel Finish: Natural
    Catalytic Converter: "No" - For off-road use only Fitment: 2011-2017 GT Mustangs
    Will it fit my Mustang?

      Customer Photos

        Questions & Answers (5)

        5 Top Rated Questions

        When will this be back in stock?

        • At the time being, we do not have an ETA on this item, this could be a 12+ week lead time.  

        Helpful (0)

        Will Flowmasters Outlaw Cat-Back Exhaust work with this?

        • TheDynatech 1-7/8 in. SuperMAXX Long Tube Headers requires a 3 inch Cat-Back Exhaust system for proper installation. The Flowmaster Outlaw Cat-Back Exhaust meets that requirement. 

        Helpful (0)

        I was install the passenger side header, i have a stock starter and the tube of the header hits on the starter. Any idea why a stock starter would hit the tubes?

        • We have not experienced issues with the Dynatech 1-7/8 in. SuperMAXX Long Tube Headers contacting the starter once installed. During installation, the engine must be lifted off the motor mounts to allow installation of the headers. If these are contacting the starter after install please contact our Customer Service department so we may best assist you.

        Helpful (0)

        Will these headers fit the stock set up, and what would the horsepower/torque gains be more or less???

        • These headers will not fit the stock setup, they require the use of the dynatech shorty midpipe and a full 3" catback exhaust system. The horsepower and torque would increase with the install of these up to 40 increase on both hp and torque.

        Helpful (0)

        are the hp and tq numbers with or without a tune?

        • The numbers listed are with a proper tune in optimal conditions.

        Helpful (0)
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          Customer Reviews (1) Write a Review

          Overall Rating 5

          out of 5 stars

          Installation Time:Afternoon

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

          • 5/5

            Installation Time: Afternoon

            November 10, 2016


            These are a loud and powerful set of headers. Catless it crazy loud and sounds amazing.


            Year: 2016 Submodel: GT

            Helpful (15)