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Kooks 1-7/8 in. Long Tube Headers (11-14 GT500)

Market Price $1,238.99 You Save 12% ($143.12)
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$1,095.87

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  • Item 102014
  • MPN# 11422400

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    Features & Details

    • Increases RWHP and Torque
    • Long Tube Header Design
    • Free Flowing 1-7/8" Mandrel-Bent Tubing
    • 304 Stainless Steel Construction
    • TIG Welded for Strength
    • Natural Finish
    • Fits 2011-2014 Shelby GT500 Mustangs
    More Horsepower and Torque. A set of Kooks Long Tube Headers will greatly improve the performance of your Shelby GT500 Mustang. Kooks Headers feature an integrated venturi style collector that increases exhaust scavenging, and reduces turbulence to improve your GT500's exhaust flow over the restrictive factory manifolds, boosting your Pony's horsepower and torque numbers.

    Quality Construction. Kooks Long Tube Exhaust headers are manufactured from 1-7/8" mandrel bent 304 stainless steel tubing for superior airflow. These headers are TIG welded and feature a leak-free ball flange design for optimal performance and a better than OEM fit. Stainless steel hardware and gaskets are included.

    Natural Finish. These Kooks Headers feature a natural stainless steel finish, which provides an aggressive appearance to your engine bay. This is not a heat-resistant coating, AmericanMuscle recommends the use of Exhaust Heat Wrap for high performance applications.

    Recommended Upgrade. To realize the full power potential that these Long Tube Headers have to offer, AmericanMuscle recommends a Bama custom tune with a Mustang Handheld Tuner to reprogram the vehicles computer (ECU) for proper operation.

    Application. These Kooks Long Tube 1-7/8" Headers are designed to fit the 2011-2014 Shelby GT500 Mustangs. Kooks long tube headers require the use of a Kooks shorty midpipe in order to be installed properly (see drop down option above).

    Technical Note: This Kooks product is intended for off road use, and is not legal for use in emission restrictive states.

    Fitment: 2011 2012 2013 2014 Details

    What's in the Box
    • (1) Driver side header
    • (1) Passenger side header
    • (2) Header Gaskets
    • Installation hardware
    Installation Info
    Tech Specs
    Header Specifications
    Header Type: Long Tube Finish : 304 Stainless steel
    Type Mid Pipe Required: Kooks Shorty X Fitment: 2011-2014 GT500
    Will it fit my Mustang?

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    Customer Reviews (4) Write a Review

    Overall Rating 4.8

    out of 5 stars

    Installation Time:Full Day

    • Loudness / Volume 4.75 4.8
    • Exhaust Note 5 5
    • Fit & Finish 5 5
    • Bang For Your Buck 4.25 4.3



    • 5/5

      Installation Time: Full Day

      March 12, 2018

      Great product

      I was a little hesitant on buying these simply because of the price, but man is it worth it super high quality design. Came with bolt lockers to prevent the header bolts from backing out, very well thought of by kooks. It is a very tight fit and you have to drop the sub frame but it’s doable, I did mine myself I took my time and it took me 2 days. I got a tune by Lund racing and man it’s a different world. These long tube headers really woke the car up I am severely impressed with the horsepower and really impressed with the low end torque gains.

      Erikbaseball1

      Year: 2014 Submodel: GT500

      Helpful (2)

    • 5/5

      Installation Time: Full Day

      May 11, 2017

      Kooks

      The best or nothing kooks all day! Worth the money

      Projectcar

      Year: 2014 Submodel: GT500

      Helpful (1)

    • 5/5

      Installation Time: Weekend

      March 02, 2017

      bought for 2014 gt500

      Performance is excellent as is the sound. Dont even try to install this on jackstands. Requires lowering suspension components etc and even with a lift it still took 1.5 days. Best upgrade so far! You will not be disappointed. Didn't even throw a CEL. Great stuff. Worth every penny.

      PaulG

      Year: 2014 Submodel: GT500

      Helpful (2)

    • 4/5

      Installation Time: Full Day

      December 15, 2015

      2011 gt500 kooks headers

      Awesome set of headers and great product to maximize horsepower output

      slowsvt

      Year: 2011 Submodel: GT500 Dallas TX

      Helpful (1)

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