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American Racing Headers 1-3/4 in. Long Tube Headers w/ Catted X-Pipe (99-04 GT)

Item 404097
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Market Price $2,063.99 You Save 12% ($238.04)
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$1,825.95 (pair)

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      Product Information

      Features, Description, Reviews, Specs & Installation


      • Long Tube Headers
      • 1-3/4" Primaries
      • 3" Catted X-Pipe
      • 304 Stainless Steel Construction
      • 3/8" Laser-Cut Flanges
      • Tig Welded Hand-Ported Inlets
      • Leak Free Merge Collectors
      • Welded Scavenger Spikes
      • Optimized Tube Routing
      • Made in the USA
      • No Tuning Required
      • Off-Road Use Only
      • Expert Installation
      • Fits 1999-2004 Ford Mustang GT's


      The Keys to Success. The American Racing Headers 1-3/4 in. Long Tube Headers w/ Catted X-Pipe have been tested to the extreme to ensure your Mustang sees the promised performance gains. If you're not ready to settle for factory performance, this header system is the ultimate upgrade for increased horsepower and torque. ARH proves once again the quality and performance are the keys to success.

      Pump Up the Volume. The 3" x-pipe ensures that mashing the gas never sounded so good. These headers bump up the decibels to make you Pony a meaner, more aggressive ride.

      Catted. High-flow 200 cell metallic substrate catalytic converters offer superior exhaust flow.

      Made in America. These headers are manufactured entirely in the USA from 304 stainless steel featuring a 1-piece long tube design. The 3/8" flanges are tig welded with hand ported inlets and the leak-free merge collectors with welded scavenger spikes all for maximum airflow.

      No Tuning Required. These headers are designed to improve the performance of your Mustang without reprogramming.

      Off-Road Only. These headers are not CARB certified and are intended for off-road use only.

      Installation. Proper Installation requires an expert level of mechanical skill, otherwise professional installation is recommended.

      Application. The American Racing Headers 1-3/4 in. Long Tube Headers w/ Catted X-Pipe will fit 1999-2004 Ford Mustang GT models.

      Fitment: 1999 2000 2001 2002 2003 2004 Details

      MPN# MT2-99134300LSWC

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (1)

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      Ratings Summary

      5.0 out of 5 overall rating from 1 customers

      Installation Time: Afternoon

      • June 19, 2019

        5 1999 GT - Gilliam Installation Time: Afternoon

        Good Quality

        Fitment was as expectes with this generation of Mustang. But so far im happy with the product and can't wait to hear it

        Helpful (0)

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      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (2) Headers
      • (1) X-Pipe

      Will It Fit My Mustang

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

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