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Pypes Mid Muffler Cat-Back Exhaust with Black Tips (11-14 V6)

Item 383698
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      Review & Installation Video

      Plain and simple, the Pypes mid-muffler cat-back that we have in this video should help you deliver some awesome tone to your '11 to '14 V6-powered Mustang, using quality 409-grade stainless steel, all for right around $500. Making this one of the most affordable systems in the category for your 3.7-powered Mustang. Installation is going to get a very simple one out of three wrenches on the difficulty meter from me, as it is a 100% bolt-on job. But we will have some more detail on that later on.So the big story with the Pypes system will no doubt be the mid-muffler design here, which is something that Pypes tends to incorporate with some other gens as well. The SN95 comes to mind. It will help produce a very unique tone, especially on the 3.7 here. Now, as far as volume is concerned, well I'm glad you asked. In fact, you heard the sound clips with this thing. I have the Pypes mid-muffler coming in at a middle of the road three out of five on my one to five, or one to Wake the Neighbors scale. This system seems to produce just the right amount of volume for most owners out there, according to our customer reviews. Check those out if you haven't done so already. Keep in mind, guys, this is with those factory manifolds and cats still in place. Ditch those in favor of some aftermarket goodies, and expect the volume and the raspiness to increase overall. But as this system sits right now with all the factory manifolds and cats in place, I think this thing sound really awesome. It's a nice deep tone, no real rasp to speak of, and in fact very reminiscent of Nissan's VQ engine, which in my opinion is another great-sounding V6. Again, totally my opinion here. Feel free to flame away if you'd like. One thing I did experience with this system while on the road is no real drone to speak of either. That is kind of a rarity for a budget-friendly system like this. Of course, that mid-muffler design will help play a small role in keeping things quiet while on the road. But besides the awesome tone from the mid-muffler design, you have to keep in mind this is a great deal for prospective buyers out there. I say that because you're getting full 409-grade stainless steel for just south of $500 if you do go with the polished tip. Add the black tip and you're going to be just above $500. But overall, a very affordable system. In fact, the most affordable full stainless system on the site currently for your 3.7 V6-powered Mustang. We do have a slightly more affordable option from MBRP. But you have to keep in mind it is aluminized steel. So the 409 gets the slight edge in my opinion. But let's keep cruising on the construction, and again 409-grade stainless, as we just covered, will make up 99% of the construction with this system, including the two and a half-inch mandrel-bent tubing, the twin M80-style bullet mufflers, and everything will exit out the four-inch tips. Again, we have the polished version in this video. You can also grab them in black as well. The tips themselves are actually made from 304-grade stainless, which is a nice thing to point out. It's a superior metal to 409-grade stainless, and will be more resilient to corrosion that you would otherwise see with aluminized steel, or even 409 to a smaller extent. But let's quickly talk about the installation here, as promised earlier, guys, with the Pypes cat-back. As I mentioned earlier, this is going to get one out of three wrenches on the difficulty meter, due to the very simple bolt-on installation. No cutting, no permanent modification, nothing crazy like that. Tool-wise, all you're really looking at here is a basic socket set. But keep in mind, you will be doing all of your work underneath the car. So a lift will be preferable, or a jack and jack stands will suffice, maybe race ramps if you have them. Getting started, you'll want to remove the two factory band clamps closest to the X-pipe. At this point, you can now remove the clamps closest to the muffler, and this will allow you to drop those factory over-axle pipes from the car. With those out of the way, now you can focus on removing the factory mufflers. To do so, use your socket set and remove the hangers from the chassis, dropping the mufflers in the process. Once all the factory stuff is out of the way, you can get to work assembling the new Pypes system underneath the car, starting with these lead pipes that you will attach using the band clamps you removed in the first step. With those in place, move on to the M80 mufflers, and loosely attach those as well using the included clamps. Snug up the bolts on those clamps. But don't overtighten them right now, because you will need to have a little play in the system to get everything set up as you'd like. From the M80 mufflers, you can work your way back to the over-axle pipes, and then last, but not least, the tips themselves, snugging up the bolts on the clamps as you go. But the final step will be to have a buddy hold the tips in place perfectly underneath that rear bumper, and then hammer home those clamps with your socket set or impact and your installation is complete. So in closing, if you're after the most affordable full stainless system available for your 3.7-powered V6 Mustang, you'll want to check out the Pypes mid-muffler cat-back right here at

      Product Information

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


      • Increases of 5 to 10 Horsepower
      • Aggressive Exhaust Sound
      • Mid Muffler Design
      • 2.5" 409 Stainless Steel Tubing
      • 4" Black Powdercoat 304 Stainless Steel Tips
      • Fits 2011-2014 V6 Mustangs


      Increase in Performance and Sound. Upgrading to a Pypes Mid Muffler Cat-Back Exhaust with Black Tips on a 2011-2014 V6 will yield an instant gain of 5-10 horsepower at the rear wheels. It features two of Pypes high flow M-80 Bullet Style Mufflers for the ultimate in unrestricted flow and power gains along with a deeper throaty tone.

      Aggressive Throaty Sound. The Pypes Mid Muffler Cat-Back features two high flow straight-through M-80 Bullet Mufflers that are mounted directly after the Mid Pipe, instead of after the axle, to produce an aggressive deep throaty muscle car tone with the help of two oversized black Stainless Steel tips.

      Quality Materials. This Pypes Mid Muffler Cat-Back Exhaust System is constructed from free flowing mandrel bent 2.5" 409 Stainless Steel Tubing and features two Pypes M-80 Bullet straight-through mufflers for an aggressive throaty sound. The whole system is finished off with a set of 4" black powdercoat 304 Stainless Steel Tips for modern muscle car styling.

      Application. The Pypes Mid Muffler Cat-Back Exhaust with Black Tips is specifically designed to bolt-on to the existing factory hybrid H-Pipe of the 2011-2014 3.7L V6 Mustang.

      Note. Stock 2011 V6 Mustangs come stock with a Mid Pipe that resembles both the H-Pipe and X-Pipe designs. This hybrid Mid Pipe was created by Ford to help add additional power and sound to the V6 straight out of the factory.

      Fitment: 2011 2012 2013 2014

      Pypes SFM79B

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (28)

      Write a Review

      Ratings Summary

      4.3 out of 5 overall rating from 28 customers

      Installation Time: Afternoon

      Installation Cost: $100-$250

      • January 09, 2020

        4 2011 V6 - FidelG Installation Time: Afternoon

        Good for what you pay for

        I really enjoy this cat-back exhaust. It sounds loud but not annoyingly loud. I had some fitment issues which made me spend more than it should've been, but it was worth it.

        Helpful (0)
      • January 09, 2020

        4 2014 V6 - MitchS197 Installation Time: Less than 1 Hour

        Best Mod Yet!

        I have only made few modifications to my 14' V6 so far, but this is definitely the best one by far. Sounds great and the drone is hardly noticeable. This was also my first "difficult" mod, and it was actually pretty simple. Would buy again!

        Helpful (0)
      • July 25, 2019

        4 2013 V6 - Lukester14 Installation Time: Afternoon


        I like it a lot, and it has a good sound, but it’s a little quiet and doesn’t quite fit right. I believe I’m gonna have to adjust the hangers for it to fit right. It was a pretty quick install, only took about an hour and a half.

        Helpful (0)
      • May 14, 2019

        4 2014 V6 - Lds Installation Time: Less than 1 Hour


        Pretty good exhaust love the sound around 2500 to 4000 rpms!

        Helpful (0)
      • March 30, 2019

        5 2014 V6 - RussA Installation Time: Less than 1 Hour


        Nice fitment and great tone. Not quite loud enough though. Did it with two buddies got it done quick

        Helpful (1)
      • March 13, 2019

        3 2012 V6 - RockThump Installation Time: Less than 1 Hour

        Deep Sound

        Sounds great. Easy switch out with stock exhaust. Only gave it 3 stars due to the box not having the exhaust clamps so I had to go to 3 different auto stores to get enough.

        Helpful (0)
      • February 20, 2019

        4 2014 V6 - CraigB Installation Time: Less than 1 Hour

        Sounds amazing!!!!!!

        Has amazing sound but does have a few rattles in the rear which was no big deal! A great upgrade to start with and strongly recommend!

        Helpful (0)
      • February 08, 2019

        5 2014 V6 - TerryM Installation Time: Afternoon

        Running Great

        The sound and power gain is great. VERY easy to install- start to finish at home in four hours. Fit perfectly.

        Helpful (0)
      • December 10, 2018

        5 2012 V6 - JosephG Installation Time: Afternoon

        Awesome !

        The pipes were very easy to install. Everything fit perfectly. Slight growl while at idle. Clean and nasty sound when getting on it . Sounds just like video

        Helpful (1)
      • July 23, 2018

        5 2014 V6 - MarcoV Installation Time: Less than 1 Hour

        Bang for your Buck!

        The product came a few days before expected and was packaged extremely well. Now the product itself was exceptional and a great quality stainless steal. The fitment went right into the factory hangers and was very simple. Overall great experience with this product and would recommend to anyone.

        Helpful (3)

      Questions & Answers (9 answers)

      5 Top Rated Questions

      Is this system quieter than the Roush axle back?

      • Yes, this will be quieter than the Roush axle-back.

      Helpful (1)

      So I just put the exhaust on and the tips are touching the bumper, will this cause any problems like melting the bumper or discoloration? Or will it be okay?

      • The tips should not be touching the bumper. Please adjust the exhaust in hangers to have an even gap between the tips and bumper.

      Helpful (1)

      Will I pass emissions if I get this

      Will these require a tune

      • This does not require a tune after install.

      Helpful (0)

      Could this fit my 2010 mustang v6 if i have a shop custom fit them

      • We can not guarantee this Pypes Mid Muffler Cat-Back Exhaust will work even with modification from a professional shop. We are unable to verify it will work as it is only intended for use on an 11'-14' V6.

      Helpful (0)
      Post Your Question
      4 More Questions
      What does it mean by (each)? Do I have to buy 2? 1 answer
      Will this set up work with BBK long tube headers and a BBK catted x-pipe? 1 answer
      Will these connect directly to the BBK Catted X-Pipe (11-14 V6 w/ Long Tube Headers)? I know that this size tubing is 2.5 in. and the catted X-pipe is 2.75 in. Will it still work, or will it require welding? 1 answer
      I just recently installed these onto my 2011 Mustang and the left tip is rubbing the bottom of the bumper. Also it rattles and makes a vibrating noise sometimes while driving. I assuming is from the tip hitting the bumper. Its probably just the hangers need to be adjusted, but do y'all have any thoughts on this? 1 answer

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (2) 16” Pipes
      • (2) M-80 Mufflers
      • (2) Over-axle pipes
      • (2) Muffler-delete tailpipes
      • (2) 4” Black Tips
      • Installation hardware

      Tech Specs

      Cat-Back Exhaust Specifications
      Piping Material:409 Stainless Steel Tip Material :Black 304 Stainless Steel
      Piping Size:2.5"Tip Size:4"
      Muffler Type:Straight-throughFitment:2011-2014 V6 Mustangs

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