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MAC Off-Road Pro Chamber Mid Pipe (99-04 GT, Cobra)

AmericanMuscle no longer carries the MAC Off-Road Pro Chamber Mid Pipe (99-04 GT, Cobra). Please check out 2010-2014 Mustang X-Pipes for Long Tube Headers for an updated selection.
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Features & Details

  • Pro Chamber Mid Pipe
  • Improves Exhaust Flow to Increase Power
  • Unique Crossover Design
  • Mandrel Bent for Free Flow
  • 2.5" Stainless Steel Tubing
  • For Off-Road Use
  • Bolt-On Installation
  • 1-Year Limited Warranty
  • Fits 1999-2004 Ford Mustang GT and Cobra Models
Make your Exhaust Work for You. The MAC Off-Road Pro Chamber Mid Pipe replaces your Mustang's power robbing catalytic converter to release its hidden power. This high performance Mid Pipe will dramatically improve exhaust flow for more horsepower and torque.

Exclusive Pro Chamber Design. This mid-pipe features a unique crossover style and free-flowing pipe that's mandrel bent using 2.5" stainless steel tubing - so there's nothing to rob you of power.

Installation. Proper bolt-on installation requires a low to moderate level of mechanical skill and can typically be completed within 2 hours.

Warranted Against Defects. MAC Products are backed by a 1-Year warranty against manufacturers defects and workmanship from the date of purchase and will require an RA# to be provided by MAC. Please review the complete warranty for details and exceptions.

Application. MAC Off-Road Pro Chamber Mid Pipe will fit 1999-2004 Ford Mustang GT and Cobra Models.

Fitment: 1999 2000 2001 2002 2003 2004 Details

MPN# PC9994

CA Residents: WARNING: Cancer and Reproductive Harm -

What's in the Box
  • (1) Mid Pipe
  • (2) Down Pipes
  • (1) Hardware Kit
  • (1) Instruction Manual
Installation Info
Will it fit my Mustang?

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Questions & Answers (2)

2 Top Rated Questions

will these fit other brand shorty headers?

  • The MAC Off-Road Pro Chamber Mid Pipe will work with any shorty heads as long as the piping is the same size and the connections are the same.

Helpful (0)

Is this Item Aluminized or Stainless Steel? The Ad says Aluminized but the Mac part number comes up as Stainless Steel on their website.

  • The MAC Off-Road Pro Chamber Mid Pipe is a 2.5 inch Stainless Steel Mid Pipe.

Helpful (0)
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Customer Reviews (1) Write a Review

Overall Rating 5

out of 5 stars

Installation Time:Afternoon

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

  • 5/5

    Installation Time: Afternoon

    April 09, 2018

    Great Sound

    Different from the standard H and X pipes but it still sounds great.


    Year: 2003 Submodel: GT

    Helpful (8)

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