Free Shipping On Orders Over $49. Details

Talk to a Mustang Enthusiast
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Win $5,000 For Your Mustang! Enter daily!
Win $3,000 in Roush Blackout Mods! Enter Daily!

Kooks 3 in. Off-Road X-Pipe (99-04 4.6L w/ Long Tube Headers)

AmericanMuscle no longer carries the Kooks 3 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.

Features & Details

  • Required for Kooks Long Tube Headers with a 3 in. Collector
  • Improves Exhaust Flow and Sound
  • Raspy Race Car Growl
  • For Off-Road, Track Use
  • 3" to 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 3" 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 3" diameter mandrel bent 304 stainless steel tubing, Kooks X-Pipes feature a merged "X" crossover for superior exhaust flow.

Application. This Kooks 3" 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# 11203150

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: 3" to 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?

    Customer Photos

      Questions & Answers (8)

      5 Top Rated Questions

      Will this fit pacesetter long tubes with 3” collectors

      • This Kooks 3" Shorty Off-road X-Pipe is specifically designed to fit with the Kooks Long Tube Headers only.

      Helpful (0)

      Will these fit perfectly with magnaflow competition 3 inch exhaust?

      • As long as the flanges line up with each other, this will fit with the Magnaflow Competition 3" cat-back exhaust.

      Helpful (0)

      do these work with my stock exaust?

      • Hello! This Kooks Off-Road X-Pipe will work with stock exhaust however it is designed for people who are using the Kooks long tube headers. Unfortunately this is not designed for the stock manifolds or shorties.

      Helpful (0)

      with a little cutting and wielding can i make the bbk long tubes fit with the Kooks Off-Road X-Pipe 3"?

      • Hi, We do not recommend mix and matching brands when it comes to headers and mid-pipes, I suggest only using the Kooks Long Tube Headers 1-5/8 in. Item# 65526 with this X-Pipe for proper fitment. Here is link

      Helpful (0)

      ok, will the Kooks Off-Road X-Pipe 3" fit with the Mac Long Tubes Headers? I want a Monster sound!

      • This will not work with the Mac long tube headers as the Kooks X-pipe is specifically designed for use with the Mustangs equipped with Kooks long tube headers.

      Helpful (0)
      Post Your Question
      3 More Questions
      I have short tube headers, can I still install these pipes? 1 answer
      if i got this x pipe and later decided to add the kooks cats to it would i have to buy the whole catted version or could i just get the kooks cats for my current kooks x pipe 1 answer
      Will this mid pipe fit on other long tubes as well? 1 answer

        Customer Reviews (3) 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 5 5

        • 5/5

          Installation Time: Less than 1 Hour

          September 10, 2017

          Great product!

          Very well constructed, easy install and great looking!


          Year: 2004 Submodel: Cobra

          Helpful (9)

        • 5/5

          Installation Time: Less than 1 Hour

          June 22, 2017

          Kooks O/R-X Pipe

          Fits perfect with the Kooks LT Headers. Only issue I have seen is the clamps could be better. After a couple of bumps from bottoming out due to lousy roads, the pipe had to be re-adjusted from the clamps. Instead of the clamps, it would be better if it was a one piece welded x-pipe. But overall, still high quality.


          Year: 2003 Submodel: Cobra

          Helpful (10)

        • 5/5

          Installation Time: Afternoon

          May 29, 2015

          Awesome purchase

          Gave the car the sound it needed and was easy install with motor already out !


          Year: 2003 Submodel: Cobra Oakley, CA

          Helpful (11)

        Related Mustang Categories