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Pypes Catted X-Pipe (99-04 GT)

Item 408633
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Market Price $508.99 You Save 12% ($59.31)
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$449.68 (each)

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      Product Information

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


      • Balance Out Exhaust Gases for More Power
      • Raspy Race Car Growl
      • Pypes Modular Construction
      • High-Flow Catalytic Converters Included
      • 2.50-Inch 409 Stainless Steel Tubing
      • NOT CARB Certified
      • 2004 Model Year Requires O2 Sensor Extensions
      • Fits 1999-2004 GT Mustangs


      Balances Exhaust Gases. The Pypes Catted X-Pipe is excellent when it comes to balancing out the gas pressures in your exhaust system. This Pypes X-Pipe creates more power and torque than a traditional H-pipe. Why? Because the exiting exhaust pulses are merged at the "X", resulting in less exhaust back pressure for more power.

      Race Car Growl. This free flowing Pypes X-Pipe for the 1999-2004 GTs not only increases power, but it also adds a raspy, race car growl to the sound of your exhaust with its modern "X" crossover pipe design.

      Modular Construction. Pypes' unique 3-piece modular construction makes it quick and easy to add or remove catalytic converters to your exhaust system in just minutes, depending on your driving needs.

      Durable, Stainless Steel Construction. Pypes uses sturdy, 16-gauge, 409 stainless steel, mandrel-bent, 2.5-inch tubing for improved exhaust flow and features welded reinforcement plates for additional strength. The included High flow catalytic converters far outperform the restrictive factory cats to provide a significant increase in horsepower and torque.

      Not CARB Certified.
      This X-Pipe is not CARB certified, therefore it is not legal for use in California or other states adopting California emission standards.

      This Pypes Catted X-Pipe is designed as a direct bolt-on for the 1999-2004 4.6L Ford Mustang GTs with either aftermarket short tube headers or the factory manifolds and a dual catback exhaust installed.

      Application Note. For the 2004 Model Year the O2 Sensors are relocated. These vehicles will require the use of 24-Inch O2 Sensor Plug-In Extended Wires.

      Fitment: 1999 2000 2001 2002 2003 2004 Details

      Pypes XFM36

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) X-Pipe Assembly
      • (2) Catalytic Converters
      • Clamps

      Customer Reviews (24)

        Questions & Answers

        10 More Questions

        Will It Fit My Mustang

        • Bullitt - 01
        • GT - 99, 00, 01, 02, 03, 04