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Pypes Catted X-Box Mid Pipe (99-04 GT)

Market Price $702.99 You Save 12% ($82.31)
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  • Item 387281

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    Features & Details

    • Increases Power
    • Deep, Race Car Growl
    • X-Box Center Chamber Design
    • Full Tig-Welded and Mandrel-Bent
    • 2.5" 409 Stainless Steel Tubing
    • High Flow Ceramic Catalytic Converters
    • 49 State Street Legal
    • Fits 1999-2004 GT Mustangs
    More Power. Increase power and torque in your 99-04 GT Mustang by replacing the power robbing factory catalytic converters with a brand new Pypes Catted X-Box Mid-Pipe. The Pypes Catted X-Box is designed to offer increased horsepower and torque, as well as an even deeper sound dimension, when compared to your traditional X-pipe upgrade.

    Deep Race Car Growl. This free flowing Pypes X-Box for the New Edge GT will not only increase power as a result of its perforated X design within the center chamber and included ceramic catalytic converters, but it is certain to add a deep, race car growl to the sound of your exhaust.

    Durable Stainless Steel Construction. Pypes utilizes high-quality 16 gauge 409 stainless steel mandrel bent 2.5" tubing for increased exhaust flow and features fully Tig-welded reinforcement plates for additional strength. The included High Flow Ceramic Catalytic Converters far outperform the restrictive stock cats to provide a significant increase in horsepower and torque.

    Application. This Pypes Catted X-Box Mid-Pipe is designed as a direct installation for the 1999-2004 4.6L GT Mustangs, with either aftermarket short tube headers or the stock manifolds and a dual catback exhaust installed. Some cutting required for installation.

    Note. This X-Box Mid-Pipe is 49 State Legal - not Legal in CA - and is not CARB Certified. Please check your local and state ordinances for installation and usage regulations.

    Technical Note: 2004 Mustangs require the use of 24" O2 sensor plug-in extender wires.

    Fitment: 1999 2000 2001 2002 2003 2004 Details

    MPN# XFM37

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) X-Box
    • (2) Down Pipes
    • (1) Down Pipe Sleeve
    • (2) Catalytic Converters
    • (4) Clamps
    Installation Info
    Tech Specs
    Mid Pipe Specifications
    Style Mid Pipe: Standard Length X-Box Type Headers Required: Shorty Headers or Stock Manifolds
    Piping Material: 409 Stainless Steel Piping Size: 2.5"
    Catalytic Converter: Yes - Ceramic Fitment: 1999-2004 GT Mustangs
    Will it fit my Mustang?

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    Customer Reviews (1) Write a Review

    Overall Rating 4

    out of 5 stars

    Installation Time:Afternoon

    • Loudness / Volume 4 4
    • Exhaust Note 5 5
    • Fit & Finish 5 5
    • Bang For Your Buck 4 4

    • 4/5

      Installation Time: Afternoon

      March 14, 2016

      overall happy

      bought one used but just as deep and throaty garenteed head turns and smiles for years to come


      Year: 2001 Submodel: GT

      Helpful (8)

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