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

Market Price $1,524.99 You Save 12% ($176.42)
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$1,348.57 (pair)

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  • Item 398846
  • MPN# 1131H010

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Ship to: Ashburn - 20149
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    Features & Details

    • Improves Exhaust Flow and Adds Horsepower
    • Throaty, Racy Tone
    • Long-Tube Header Design
    • X-Pipe Mid-Pipe De-Catted Design
    • 5” Off-Road X-Pipe
    • 1-5/8” Inlet Header With 2.5” Collector
    • Mandrel-Bent Free-Flowing Tubing
    • Natural-Finish T304 Stainless-Steel Construction
    • For Off-Road Use Only
    • Not CARB certified.
    • Calibration Recommended With Installation
    • Fits 2005-2010 Mustang GT Models
    Improves Rear Wheel Torque and Horsepower. This Kooks 1-5/8” Headers and Off Road X-Pipe Combo eliminates restrictive factory cats and introduces throaty, free-flowing tubing that helps your Mustang’s engine breathe better. This quality engineering and construction provides instant power gains and an outstanding basis for further tuning. The inlet ports of the long tube headers are hand ground at Kooks to ensure perfect, restriction-free fitment.

    Racy, Raspy, Big-Bore Sound. The wide-mouthed, tubular Kooks Headers and optimized cat-less x-pipe work with the firing pulses of the engine to harness extra power and produce a raspy, racy exhaust note that builds to a real scream. With the increased volume, nobody will mistake your Mustang for stock.

    Cat-Less Design. Kooks Off-Road X-Pipe is constructed from cat-less down pipes that mate up to the Long Pipe Headers. There are no more factory cats to get in the way of exhaust gases and choke off your Mustang’s real power.

    Handcrafted Stainless-Steel Components. Kooks Long Pipe Headers are constructed by hand from the finest 304 stainless steel and feature mandrel-bent smooth-radius curves and hand-ground inlet ports to eliminate all possible obstructions. They’re complemented a durable stainless-steel x-pipe.

    Tune Recommended. Installation of the Kooks Headers and Off Road X-Pipe makes a huge difference to the breathing of your engine. To harness the full benefits, ECU calibration is recommended.

    Application. The Kooks 1-5/8” Headers and Off Road X-Pipe are specifically engineered for 2005 through 2010 Mustang GT models.

    Fitment: 2005 2006 2007 2008 2009 2010 Details

    CA Residents: Warning: California's Proposition 65

    What's in the Box
    • (2) Kooks Headers
    • (1) Kooks X-Pipe
    • Installation Hardware
    Installation Info
    Tech Specs
    Will it fit my Mustang?

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    Customer Reviews (1) Write a Review

    Overall Rating 5

    out of 5 stars

    Installation Time:Weekend

    • Loudness / Volume 5 5
    • Exhaust Note 5 5
    • Fit & Finish 5 5
    • Bang For Your Buck 2 2

    • 5/5

      Installation Time: Weekend

      January 11, 2018


      These are the best longtubes out! They sound amazing and make even better power!


      Year: 2004 Submodel: GT

      Helpful (2)

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