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Kooks 1-5/8 in. Long Tube Headers & Catted X-Pipe Combo (05-10 GT)

Market Price $1,639.99 You Save 12% ($189.57)
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$1,450.42 (pair)

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  • Item 398847

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Ship to: Ashburn - 20149
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    Features & Details

    • Improved Exhaust Flow for More Power
    • Big-Throated, Racy Tone
    • Long-Tube Headers
    • Catted Connection Pipe
    • 5” Off-Road X-Pipe
    • 1-5/8” Inlet Header and 2.5” Collector
    • Free-Flow Mandrel-Bent Tubing
    • T304 Natural-Finish Stainless-Steel Construction
    • Only for Off-Road Use
    • Not CARB Compliant
    • Tuning Recommended With Installation
    • Fits all 2005-2010 Ford Mustang GT Models
    Improved Torque and Horsepower at the Rear Wheels. The Kooks 1-5/8” Headers and Catted X-Pipe Combo removes traditional restrictive factory cats and replaces them with high-flowing race cats and big-bore tubing to help your Mustang breathe better, which produces instant power gains and provides a basis for future power tuning. The header inlet ports are hand ground by experts at Kooks to guarantee a perfect fit.

    Big Throaty Sound. Big-bore piping in the Kooks Headers coupled with race cats in the X-Pipe work with the engine’s firing pulses to harness extra power. They generate a raspy, racy exhaust sound that builds to a jaw-dropping rumble.

    High-Power Race Cats. The Catted X-Pipe features super-flow race cats specially designed to minimize restrictions. They don’t choke your Mustang’s breathing like factory cats.

    Handcrafted Aircraft-Grade Stainless-Steel. Kooks Long Pipe Headers are handcrafted from tough T304 stainless steel. Smooth-radius mandrel-bent curves and hand-ground inlet ports get rid of any obstructions to maximize exhaust flow.

    Tune Recommended. The Kooks Headers and Catted X-Pipe help your engine breathe much more freely. Tuning of the ECU is recommended to maximize the power gains.

    Not CARB Certified. These Kooks Headers are not CARB certified and do not conform to California emissions regulations. They are intended for off-road use only.

    Application. This Kooks 1-5/8” Headers and Catted X-Pipe Combo fits all 2005 to 2010 Mustang GT models.

    Fitment: 2005 2006 2007 2008 2009 2010 Details

    MPN# 1131H020

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (2) Kooks Header
    • (1) Kooks X-Pipe
    • Installation Hardware Including O2 Extensions and Gaskets
    Installation Info
    Tech Specs
    Will it fit my Mustang?

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    Questions & Answers (1)

    1 Top Rated Question

    Hi, I've a 2006 Ford Mustang GT with stock exhaust system. I want to swap out the stock headers and catted /x-pipe and keep the cat-back exhaust. Would this Item 398847 fit my car? I don't have the money to upgrade the cat-back exhaust right now.

    • The Kooks 1-5/8 in. Long Tube Headers and Catted X-Pipe Combo will be compatible with your stock cat-back exhaust.

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

    Overall Rating 4

    out of 5 stars

    Installation Time:Full Day

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

    • 4/5

      Installation Time: Full Day

      January 14, 2018


      These headers sound great and I am very pleased that I bought them


      Year: 2009 Submodel: GT

      Helpful (5)

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