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

Market Price $1,167.43 You Save 10% ($116.74)
Our Price

$1,050.69

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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?
  • GT500 - 11, 12, 13, 14

People Who Bought This Item Also Bought

Most Helpful Reviews

5/5
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! ...

Read More
Helpful (1)

5/5
Kooks

The best or nothing kooks all day! Worth the money

Helpful (0)

Overall Rating 4.7 out of 5 stars
Read All 3 Reviews

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Customer Reviews (3) Write a Review

Overall Rating 4.7

out of 5 stars

Installation Time:Full Day

  • Loudness / Volume 4.666667 4.7
  • Exhaust Note 5 5
  • Fit & Finish 5 5
  • Bang For Your Buck 4.333333 4.3



  • 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 (1)

  • 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 (0)

  • 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 (0)

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