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MAC Cut & Clamp Pro Chamber Mid Pipe (05-10 GT)

Item 40039
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      Product Information

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


      • Converts Factory "H" Pipe to a Pro Chamber
      • Improves Exhaust Flow and Sound
      • Stainless Steel Construction
      • Cut and Clamp Design
      • Reuses Stock Catalytic Converters
      • Fits 2005-2010 GT and Bullitt Mustangs


      Increase Exhaust Flow. Ford did a decent job on the S197 catalytic converters, but the stock H-Pipe is pretty restrictive. That's where the MAC Performance Cut and Clamp Mid-Pipe comes into play. Featuring MAC's unique Chamber style crossover and free-flowing mandrel-bent piping, this cut and clamp Mid Pipe will dramatically improve exhaust flow for more power and sound.

      Muscle Car Rumble. This free flowing MAC Performance Mid Pipe not only increases the horsepower and torque of your Mustang, but with its unique Pro Chamber cross over design it adds a distinctive muscle car rumble to the sound of your exhaust, that the standard H-Pipe just can't match.

      Reuses Stock Cats. The installation of the MAC Performance Cut & Clamp Pro Chamber Mid-Pipe requires cutting and removing the stock H-Pipe, and reuses the factory catalytic converters saving you money. Clamps and complete instructions are provided.

      High Quality Construction. Constructed from durable 2.5" diameter stainless steel tubing, this MAC Performance mid pipe is CNC mandrel bent to ensure maximum exhaust flow, so there are no kinks to rob you of power.

      Application. The MAC Performance Pro Chamber Cut and Clamp Mid-pipe is designed for use on the 2005-2010 4.6L Mustangs, including the GT and Bullitt with either aftermarket short tube headers or the stock manifolds installed. Reuses factory catalytic converters.

      Fitment: 2005 2006 2007 2008 2009 2010 Details

      MPN# PC2105

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (14)

      Write a Review

      Ratings Summary

      4.6 out of 5 overall rating from 14 customers

      Installation Time: Afternoon

      Installation Cost: $100-$250

      • June 27, 2019

        5 2005 GT - CDeigs Installation Time: Afternoon

        Great Product

        I receive many complements on the exhaust note from the car whenever I’m out driving either at the track or around town. Construction is solid especially for those concerned of longevity on their daily commuter. I think it’s worth the additional cost verses some of the other cheaply made products available on the market.

        Helpful (1)
      • June 12, 2019

        5 2006 GT - ASaleen Installation Time: Less than 1 Hour

        Finally happy with my exhaust

        I have an 06 supercharged Saleen. Previous exhaust mods were BBK ceramic shorties, a JBA catted X-pipe; along with the stock Saleen/Magnaflow catback. The Saleen/Magnaflow was too tame; and the X-pipe was just too raspy under WOT. Kept the cats with the ProChamber; and cut out mufflers and replaced with Y-pipe to keep center exhaust functional. Exhaust note is deep and loud now; but does not drone. The car finally sounds like a true muscle car. ProChamber fit great. It just required slight trimming on the catback side. Used clamps. ProChamber installed quickly. The Y-piping took some tweaking. I do not have cams. I highly recommend this mid-pipe.

        Helpful (0)
      • March 01, 2017

        5 2006 GT - Bigdogg Installation Time: Afternoon

        Pro Chamber

        One word AWESOME! I had a pro chamber on my fox when I was in my 20s so i decided to put one on my s197. Great decision. Paired with my slp loudmouth axleback the sound is amazing. I can feel a difference in my torque also. Would recommend for any mustang old or new.

        Helpful (4)
      • April 25, 2014

        4 2006 GT - Mustangkid06 Installation Time: Less than 1 Hour

        Mac Prochamber H-Pipe

        First things first this is a very quiet H-Pipe. The only thing exhaust wise I had on the car was a pair of flowmaster outlaws which sound amazing for just axle backs. My goal was to have a smooth but loud exhaust. The smoothness was achieved but this H-Pipe lacks in volume. I'm hoping to add a pair of LT's will hopefully wake it up. All in all if your the type of guy or gal that is willing to sacrifice sound for the smooth tone of this prochamber this is the H-Pipe for you.

        Helpful (6)
      • December 30, 2013

        5 2005 GT - Dearborn68 Installation Time: Shop Install Installation Cost: 0-$100

        MAC PRO Chamber

        Was looking for a crossover pipe that would work with my current cats and wasn't too loud, as I drive this car everyday. This product fit my needs perfectly, plus I have noticed an increase in mpg going back and forth to work.

        Helpful (5)
      • December 20, 2013

        5 2006 GT - tripleblack97 Installation Time: Less than 1 Hour

        smooth tone

        Removed o/r x pipe for the mac prochamber and wow just what a three valve needs for a smooth tone not raspy like other mid pipes install this and never look back. Installation was easy and to the point can be done in an hour or less. Only mid pipe I will ever buy or recommend for 3valve mustang.

        Helpful (6)
      • November 22, 2013

        5 2009 V6 - svotribute Installation Time: Less than 1 Hour

        best exhaust choice!!!

        I had ordered this from AM from their advice and I have to say .... I LOVE IT !!!! I had an x pipe on orginally which gave me a decent tone but WOT resonatated to much and had a tuner whine... the pro chamber fixed this right up. No more raapy annoying whine and drone prochamber sounds crisp clean andd a little deeper. Idle has a beautiful purr but is not overbearing by any mean and thats with no mufflers. If you have a v6 stang and you are looking for a nice note this is your product..... wont make it sound lkke a v8 persay but youll make those civics think twice before challenging you

        Helpful (4)
      • August 26, 2013

        5 2008 GT - willy90 Installation Time: Afternoon

        Great sound.

        cant beat the sound of this thing, much deeper the the stock H. Sooner or later I will be installing hi flow cats and MAC headers to complement this already awesome product.

        Helpful (5)
      • July 15, 2013

        3 2010 GT - Bigjamesdean Installation Time: Less than 1 Hour

        MAC Cut & Clamp Pro Chamber Mid-Pipe

        IInstalled this in tandem with Corsa Extreme's. Was all stock accept for Flowmaster 40's. There was some weld slag in the chamber that was a real pain to get out which is why I rated it middle of the road. Went on easy enough and sounds great although for anyone wanting aggressive unless your running headers and no cats its going to be quiter than the stock H pipe. I am very happy overall although I was wanting a bit more volume the sound is unique and the drone has vanished , Putting a youtube link not sure if that allowed but its there if you want to hear it,

        Helpful (5)
      • March 25, 2013

        4 2006 GT - Ken281 Installation Time: Afternoon

        Smooth exhaust tone

        If u like the choppy deep sound of a V8 then stick with the stock H. If u want a slightly deeper and smoother sound then the prochamber is the way to go. I have it paired with some chambered flows. Now as u know chambered mufflers are like drone city, but the prochamber makes it a bit more tolerable. Over all exhaust note is a bit quieter and deeper. Sounds like heaven's orchestra at wot. Fit and finish is ok, kinda looks like I could've made one outa scrap metal though, but hey it sits under the car and as long as it doesnt leak and does what its supposed to im kool. I did pickup 1-2 mpg, I dont know if it was strictly from the prochamber though. Im pretty sure the bama tune played a role in the mileage too. Installation was a breeze just make sure to put something on da pipes to help em slide for a better fit.

        Helpful (4)

      Questions & Answers (3 answers)

      3 Top Rated Questions

      Will this work with longtubes?

      • No, this is not compatible with longtube headers.

      Helpful (0)

      What is inside the chamber? An H, X, or some other invention? Is the chamber resonated? It would be nice if the description answered these questions. Thank you.

      • The MAC Pro Chamber is a Unique design from Mac, Rather than an H or X, Mac uses a chamber to equalize exhaust pulses. Mac does not add any form of resonator as this is not intended to reduce sound output.

      Helpful (0)

      does it need to be tuned? Will I need a new tune by purchasing this? and is this the off road version of Mac Pro-chamber? because some other websites has listed this part number as off road version. Thanks

      • No you will not need a tune but could help pull some extra HP. Also no this is not and off road version it's designed to work with the factory exhaust manifolds and cats

      Helpful (0)
      Post Your Question

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Mid-pipe
      • (2) Clamps

      Tech Specs

      Mid Pipe Specifications
      Style Mid Pipe: Splice in Type Headers Required: Shorty or Stock Manifolds
      Piping Material: Stainless Steel Piping Size: 2.5"
      Catalytic Converter: Reuses stock Catalytic Converters Fitment: 2005-2010 GT, Bullitt

      Will It Fit My Mustang

      • Bullitt - 08, 09
      • GT - 05, 06, 07, 08, 09, 10

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