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Kooks 1-5/8-Inch Long Tube Headers with Catted X-Pipe (99-04 GT)

Item 65530
AmericanMuscle no longer carries the Kooks 1-5/8-Inch Long Tube Headers with Catted X-Pipe (99-04 GT). Please check out 2015-2021 Mustang Headers for an updated selection.
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    Product Information

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

    Features

    • Increase Rear Wheel Horsepower and Torque
    • Includes Long Tube Headers w/ Matching Catted X-Pipe
    • 304 Stainless Steel Construction
    • High Flow Catalytic Converters
    • Free Flowing Mandrel-Bent Tubing
    • Fits 1999-2004 GT and Bullitt Mustangs

    Description

    Improve Horsepower And Torque. The Kooks Long Tube Header and Catted Shorty X-pipe combo kit for the GT and Bullitt Mustang will balance out the exhaust pressure to increase flow over the restrictive factory exhaust system resulting in more horsepower, torque, and better throttle response.

    Quality Construction. Manufactured from 1-5/8" mandrel bent 304 stainless steel tubing Kooks Long Tube Headers are TIG welded for strength, and feature a leak-free ball flange design to fit perfectly into the included 2.5" diameter 304 stainless steel Shorty X-pipe for excellent exhaust flow and performance.

    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 this Kooks Long Tube Header and X-pipe Kit has to offer, AmericanMuscle recommends a custom tune with a Mustang Handheld Tuner to reprogram the vehicles computer (ECU) for proper operation.

    Application. This Kooks Long Tube Header and matching catted shorty X-pipe combo kit is designed specifically for the 1999-2004 4.6L GT and Bullitt Mustangs.

    Technical notes. Not legal for use on pollution controlled motor vehicles; intended for off road use only.

    Fitment:

    CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

    Installation & What's in the Box

    Installation Info

    What's in the Box

    • Kooks Long Tube Headers
    • Matching Kooks catted shorty X-Pipe
    • Necessary Gaskets
    • O2 Extensions

    Tech Specs

    Header Specifications
    Header Type: Long Tube Finish : 304 Stainless steel
    Type Mid Pipe Required: Kooks Shorty X Fitment: 1999-2004 GT and Bullitt


    Mid Pipe Specifications
    Style Mid Pipe: Shorty "X" Type Headers Required: Kooks Long Tube
    Piping Material: 304 Stainless Steel Piping Size: 2.5"
    Catalytic Converter: "Yes" Fitment: 1999-2004 GT and Bullitt
    4.9

    Customer Reviews (58)

      Questions & Answers

      10 More Questions

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