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Kooks 2.5 in. Off-road X-Pipe (99-04 4.6L w/ Long Tube Headers)

AmericanMuscle no longer carries the Kooks 2.5 in. Off-road X-Pipe (99-04 4.6L w/ Long Tube Headers). Please check out Ford Mustang Shorty X-pipe Exhaust for an updated selection.
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Features & Details

  • Required for Kooks Long Tube Headers with a 2.5 in. Collector
  • Improves Exhaust Flow and Sound
  • Raspy Race Car Growl
  • For Off-Road, Track Use
  • 2.5" Mandrel-Bent 304 Stainless Steel Tubing
  • Fits 1999-2004 GT, Bullitt, Mach 1 and Cobra
Increase Performance. Eliminate those power robbing factory catalytic converters with a Kooks Off-road Shorty X-pipe to add even more horsepower and torque to the rear wheels of your 4.6L Mustang. This Kooks 2.5" X-pipe is specifically designed to be used with Kooks Long Tube Headers.

Race Car Growl. This free flowing Kooks X-pipe for the 1999-2004 4.6L Mustangs not only increases power, but it also adds a crisp raspy, race car growl to the sound of your exhaust with its modern "X" crossover pipe design.

Quality Construction. Manufactured from 2.5" diameter mandrel bent 304 stainless steel tubing, Kooks X-pipes feature a merged "X" crossover for superior exhaust flow.

Application. This Kooks 2.5" Shorty Off-road X-Pipe is specifically designed to fit the 1999-2004 GT, Bullitt, Mach 1 and SVT Cobra Mustangs with Kooks Long Tube Headers installed.

Technical Note: This Kooks product is intended for off road use, and is not legal for use in emission restrictive states.

Fitment: 1999 2000 2001 2002 2003 2004 Details

MPN# 11203140

CA Residents: WARNING: Cancer and Reproductive Harm -

What's in the Box
  • (1) Off-road Shorty X-Pipe
Installation Info
Tech Specs
Mid Pipe Specifications
Style Mid Pipe: Shorty "X" Type Headers Required: Long Tube
Piping Material: 304 Stainless Steel Piping Size: 2.5"
Catalytic Converter: "No" - for off-road use only Fitment: 1999-2004 GT, Bullitt, Mach 1 and Cobra Mustangs
Will it fit my Mustang?

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Questions & Answers (2)

2 Top Rated Questions

Will this kooks off road xpipe fit different brand long tube headers or does it have to be kooks headers

Would this fit with the BBK long tube headers?

  • The 2.5 inch Kooks off-road x-pipe is designed to fit with 99-04 GT Mustangs that have the Kooks long tube headers.

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Customer Reviews (1) Write a Review

Overall Rating 5

out of 5 stars

Installation Time:Less than 1 Hour

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

  • 5/5

    Installation Time: Less than 1 Hour

    May 28, 2014

    Great Sound, Great Fitment!

    You will not be sorry after installing the Kooks off-road x-pipe. Although it may be a bit pricey, the sound, fitment and installation time were all a huge plus. Only took a little over an hour to install, which was mostly due to getting the stock exhaust off. Straight bolt-on with no welding or any other fitment issues required. The sound is loud, crisp and you can tell the exhaust is not being suffocated anymore by the stock set up. If your looking for an even more aggressive sound and to add even more HP and TQ, I suggest installing Kooks headers and an SLP Loudmouth exhaust.I highly recommend this product for any Mustang owner, especially Mach 1 owners!


    Year: 2003 Submodel: Mach 1 Wood Dale, IL, USA

    Helpful (9)

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