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Pypes Catted H-Pipe (99-04 GT)

Item 411008
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Market Price $472.28 You Save 13% ($61.60)
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$410.68 (kit)

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      Product Information

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


      • Enhances Exhaust Gas Velocity Improving Performance
      • Throaty, Deep Exhaust Note
      • Catted H-Pipe Design
      • Includes High-Flow Metallic Substrate Catalytic Converters
      • High-Strength, 2.50-Inch, Mandrel-Bent, Tubular Stainless Steel Construction
      • For Street and Occasional Track Use
      • Fits All 1999-2004 Ford Mustang GT Models


      Optimized Exhaust Gas Flow. Optimize exhaust gas flow in your Mustang GT with the Pypes Catted H-Pipe. This H-pipe style mid-pipe is engineered to equalize the pulses of exhaust gas as these leave your vehicle. By doing so, this H-pipe optimizes exhaust scavenging, thus enhancing exhaust gas velocity. The result is increased performance gains, particularly in low-end torque, a factor that can certainly prove useful whether on the track or streets.

      Aggressive New Sound. By upgrading to this catted H-pipe, you not only enhance performance, you also give your Mustang’s stock sound an aggressive makeover. Specifically, this H-pipe is designed to turn your vehicle’s more urbane stock sound into a deep and throaty roar that’s sure to turn heads wherever you drive. Additionally, this new sound is surprisingly drone-free so you get to enjoy your drives in relative peace.

      Features High-Flow Catalytic Converters. This H-pipe includes a pair of catalytic converters designed for maximum exhaust gas flow. These cats are engineered to work hand in hand with the pipes, providing them with superior functionality without compromising exhaust gas velocity. This ensures your vehicle maintains legal emission regulations.

      High-Strength Build Quality. This catted X-pipe is constructed from 16-gauge, 2.50-inch tubular 409 stainless steel, making this assembly particularly strong and corrosion-resistant. Additionally, these stainless steel tubes are fully mandrel-bent and expertly welded to eliminate any performance-robbing turbulence areas from along its inner structure. Finally, the included catalytic converters are similarly machine-formed, providing an accurate fit with the rest of the assembly when installed.

      Application. The Pypes Catted H-Pipe fits all 1999-2004 Ford Mustang GT models.

      Application Note. It is advisable to have your ECU re-tuned after installing this Pypes Catted H-Pipe as replacing your factory cats can result in a check engine light.

      Fitment: 1999 2000 2001 2002 2003 2004 Details

      Pypes HFM36

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) H-Pipe Assembly
      • (2) Extension Legs
      • (2) Catalytic Converters
      • (3) Band Clamps

      Customer Reviews (18)

        Reviews of Pypes Exhaust products have an average rating of 4.5 out of 5

          Questions & Answers

          10 More Questions

          Will It Fit My Mustang

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