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MAC Off-Road Pro Chamber Mid Pipe (11-14 V6 w/ Long Tube Headers)

AmericanMuscle no longer carries the MAC Off-Road Pro Chamber Mid Pipe (11-14 V6 w/ Long Tube Headers). Please check out 2010-2014 Mustang H-Pipes for an updated selection.

Features & Details

  • Improves Exhaust Flow for More Power
  • Unique Pro Chamber Crossover Design
  • For Off-Road, Track Use
  • 2.5" Mandrel-Bent Stainless Steel Tubing
  • Fits 2011-2014 V6 Mustangs w/ MAC Long Tube Headers
Increase Exhaust Flow. Get rid of those power robbing factory catalytic converters and uncork your 2011-2014 V6 Mustangs hidden power with a MAC Performance Shorty Off-road Mid-Pipe. Featuring the exclusive Pro Chamber style crossover and free-flowing mandrel-bent tubing, this high performance shorty Mid Pipe in combination with MAC Performance Long Tube Headers will dramatically improve exhaust flow for more horsepower and torque.

Aggressive Muscle Car Rumble. This free flowing MAC off-road Mid Pipe not only increases the horsepower and torque of your V6 Mustang, but with its unique Pro Chamber cross over design it adds a more aggressive muscle car rumble to the sound of your exhaust, that the standard H-Pipe just can't match.

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

Application. This MAC Performance Pro Chamber Off-road Shorty Mid-pipe is designed as a direct bolt-on for the 2011-2014 3.7L V6 Mustangs, with MAC Performance Long Tube Headers installed. Intended for off-road, track use only, does not include catalytic converters.

Fitment: 2011 2012 2013 2014 Details

MPN# 21205

CA Residents: WARNING: Cancer and Reproductive Harm -

What's in the Box
  • (1) Mid-Pipe
  • (2) Down Pipes
  • (2) Clamps
Installation Info
Tech Specs
Mid Pipe Specifications
Style Mid Pipe: Shorty Type Headers Required: MAC Long Tube
Piping Material: Stainless Steel Piping Size: 2.5"
Catalytic Converter: "No" - For off-road use only Fitment: 2011-2014 V6
Will it fit my Mustang?

    Customer Photos (1) Submit Your Photo

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      Questions & Answers (11)

      5 Top Rated Questions

      Will this work with BBK long tubes?

      • yes they will check out my youtube channel for a sound clip FLΞΞT

      Helpful (3)

      Hi AM, What exactly is the difference between Pro Chamber and an H-Pipe? Thanks.

      • The difference is that the H-pipe connects the right and left exhaust pipes with a single pipe. The Pro Chamber connects it with an actual chamber that will not only increase the after header sound but will increase the amount of flow to exit.

      Helpful (1)

      If I put on the mid pipe, am I able to put the long tube headers the next day. Basically, do I have to install both at the same time?

      • These will need to be installed at the same time as the long tubes.

      Helpful (0)

      Will this mid pipe pass emissions?

      • This midpipe will not pass most emissions inspections since it would delete the catalytic converters.

      Helpful (0)

      will this fit with the Magnaflow 4.5 in Cat-Back exhaust?

      • Yes, this mid pipe is compatible with the Magnaflow 4.5 in. cat-back exhaust for the V6.

      Helpful (0)
      Post Your Question
      6 More Questions
      Hi can add the Pypes catalytic to this h-pipe for it to be street legal ? Will I need welding or can I just bolt on the cats and this h-pipe ? 1 answer
      If I get shorty headers and this, could I reuse my cats bolt-on fashion? Or would I need to get custom work done? 1 answer
      does this part fit without any custom work? 1 answer
      Well this work with Borla Long Tube Headers? 1 answer
      Performance gains? What kinds of horsepower and torque gains can I expect from this with MAC long tube headers? 1 answer
      Fitment Will this fit my 2012 v6 with bbk longtubes 1 answer

        Customer Reviews (4) Write a Review

        Overall Rating 4.5

        out of 5 stars

        Installation Time:Weekend

        Installation Cost:0-$100

        • Loudness / Volume 4.25 4.3
        • Exhaust Note 4 4
        • Fit & Finish 4.75 4.8
        • Bang For Your Buck 4.25 4.3

        • 3/5

          Installation Time: Afternoon

          April 29, 2018

          Only kept it for a week.

          Initially I thought that these would give me the power and sound that I was looking for. After driving with it for a week I removed it and went back to my catted x-pipe. There was a rattle with these that I couldn’t stop and the rasp was unbearable. I am sure that the tone might have improved with a set of cats or resonators but the rattle was enough to convince me that the quality of the product was severely lacking. I suspect that the baffles in the chamber are loose and the rattle is coming from them.


          Year: 2013 Submodel: V6

          Helpful (8)

        • 5/5

          Installation Time: Afternoon

          May 16, 2016

          MAC Off-Road Pro Chamber Mid-Pipe

          Had a small problem with the two front pipes that bolt to the headers, but over all love them.


          Year: 2011 Submodel: V6

          Helpful (7)

        • 5/5

          Installation Time: Shop Install

          Installation Cost: 0-$100

          December 10, 2015

          Great product

          Very well made I could not be happier with the performance and sound IMO this is a must have for any serious muscle with a V6


          Year: 2014 Submodel: V6 Orlando FL

          Helpful (7)

        • 5/5

          Installation Time: Shop Install

          November 13, 2015

          Great buy check it out

          Great buy for any sixers out there. I bought this with a prochamber to eliminate the rasp that i'd get and it work it sounds MEAN!!!!! If you're wondering as to what it sounds like scribe to my youtube channel I'll be doing a full review of it on this date 11/16 or 17/2015 depending on what time the tunes I've order come in. My channel name: FLΞΞT see you there!!!


          Year: 2013 Submodel: V6

          Helpful (13)

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