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Kooks 2 in. x 3 in. Stainless Steel Long Tube Headers (11-14 GT)

Market Price $1,275.99 You Save 12% ($148.09)
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$1,127.90 (kit)

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  • Item 398871

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    Features & Details

    • Aggressive Exhaust Note
    • Enhanced Exhaust Flow for an Increased HP & Torque Gains
    • Designed with a Single Exhaust Tube for Multiple Gas Ports for Efficient Gas Emission
    • 304 Grade 2" X 3" Stainless Steel, Mandrel-Bent Tubular Construction for Enhanced Strength and Thermal Resistance
    • High-Performance Chrome Finish Offers Protection Against Oxidation
    • Direct, Bolt-On Replacement Upgrade
    • Recommended for Use with Kooks X-Mid-Pipes for Ultimate Exhaust Performance
    • CARB Non-Compliant – Cannot be Installed or Sold in California
    • Hassle-Free Lifetime Limited Warrant
    • Engineered to Fit All Ford Mustang GT Models Built between 2011 and 2014
    Aggressive Exhaust Note. The sound and performance of the Kooks 2 in. x 3 in. Stainless Steel Long Tube Headers is exceptional once you fine tune the headers to your Mustang GT. It features an integrated venture merge spike that improves savaging and less collection turbulence, and primaries blended for enhanced airflow thereby emitting a crisp roar.

    Improved Power and Performance. Kooks headers utilize only a single exhaust tubes for an easier workload as the motor evacuates gases, thereby enhancing your Mustang' horsepower, torque for maximum acceleration rate.

    Quality Construction. The artistry input into the construction of these headers makes use of high-grade 304 stainless steel that is both lightweight and strong for ultimate strength and high-thermal resistance capacity and can withstand temperatures reaching 1500 degrees.

    Direct, Bolt-On Installation. Kooks engineered their 304 SS headers to be a direct fit replacement upgrade for the stock headers. It requires no further drilling or cutting. Installing it requires only hand-held tools.

    Warranty. Kooks Performance guarantees quality on their headers and offers a Limited Lifetime Warranty for this Long Tube Header.

    Application. The Kooks 2 in. x 3 in. Stainless Steel Long Tube Header is crafted to fit all 2011 – 2014 Mustang GT models.

    Fitment: 2011 2012 2013 2014 Details

    MPN# 11412600

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Long Tube Headers
    • (1) Connection Pipe Assembly
    • (4) ARP Bolts
    • (2) Gaskets
    • (2) Clamps
    • (1) 02 Extension
    Installation Info
    Tech Specs
    Will it fit my Mustang?

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    Questions & Answers (3)

    3 Top Rated Questions

    1: says it only comes with 1 header, is that by accident? 2: is the headers 2 inches and then converts to 3 inch piping?

    • The Kooks 2 in. x 3 in. Stainless Steel Long Tube Header will come with (2) Long Tube Headers, (1) Connection Pipe Assembly, (4) ARP Bolts, (2) Gaskets, (2) Clamps, and (1) 02 Extension

    Helpful (2)

    Hi, will this kit work with a stock length off road x or h pipe? Or will this only work in combination with a kooks mid pipe?

    • The Kooks 2 in. x 3 in. Stainless Steel Long Tube Headers will require a "shorty" Mid-Pipe which accommodates for the extra length of the headers. We suggest using the Kooks X-Mid-Pipes but can be used with most aftermarket "shorty" mid-pipes with minor modification.

    Helpful (0)

    It says it is designed for a single exit exhaust, does this mean it only comes with 1 header or 2? and if I have a rough cat back will it fit? or does it only work with the single exit exhaust?

    • These headers by Kooks wouldcome in a pair and it would work with a cat-back exhaust as well. On this page where we reference the single exhaust tube, that's more about the design of the Kooks headers. We apologize for the confusion.

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

    Overall Rating 4

    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

    • 4/5

      Installation Time: Afternoon

      January 13, 2018

      Good product

      Was not too bad of an install best to do if you have a lift


      Year: 2012 Submodel: GT

      Helpful (9)

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