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Pypes Electric Exhaust Cutout Kit - 2.5 in. (79-14 All)

Market Price $565.99 You Save 12% ($66.31)
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  • Item 20044

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    Features, Video & Details

    • Unleash Your Exhaust with a Flip of a Switch
    • Take Your Exhaust Note from Stealth to Screaming Instantly
    • Built in Thermal Protection Device
    • Includes Two 2.5" Y Pipes
    • Also Compatible with Any Pypes 2.5" or 3" Pipe
    • Manufacturer's Limited Lifetime Warranty

    Review & Installation Video

    Review & Install Video

    Hey guys, Stephanie with, and this is my review of the Pypes electric exhaust cutout kit that will work for all 1979 to 2014 Mustangs. The Pypes electric exhaust cutout kit is going to be for the Mustang owners out there that would love to be able to change their exhaust note on the fly and go from a normal sound to a much louder one in a few seconds. This kit gives you the ability to hit a switch and create a wide-open exhaust and then switch back whenever you want to. All right, this is really the only kit of its kind that's available on the site right now. It's coming in at a price point between $400 and $500, being a little bit closer to the $500 mark. The kit has a few different components to it, including the Y-pipes here. Unlike some other kits that are out there like this, the Y-pipes do come with the whole kit here. The Y-pipes are two and a half inch, and they're designed to work with a two and a half inch diameter mid-pipe. They also come with a three-inch flange to make the install easier. Then, you have the two cutouts that have CNC machine to billet aluminum housing. The housings are made to have a precise fit with the Y-pipe to avoid any leaks. The housings also have a double butterfly seal that has an O-ring so you don't have to worry about leaks there, either. Another cool thing about the housings is that they have a built-in thermal protection device that will help protect your electronics. This is a little bit more reassurance as far as the product life goes. This is even on top of the manufacturer's limited lifetime warranty. We've got the Y-pipes and the cutouts. We're also looking at a wiring harness for you to wire in your switch to the cabin so you can activate the cutouts from the driver's seat as you please. The exterior connectors that control the cutouts are actually weather-tigh,t which is another thing to consider when you're running electronics outside of the car like this. The last thing we have here are the gaskets that you'll need. If we take a look at them here, they are extra thick. Those look good to me. There's also stainless steel mounting hardware, which is another sign that tells me that Pypes did consider all of the angles with this kit, being that it's subjected to the heat of the exhaust as well as the open elements of the weather. Let's talk about the install and the position of these a little bit. The way they are right now, they're designed to go right in line after your mid-pipe. Bit in all honesty, you do have a little bit of room to play around with these and put them in other areas like right after your headers or further down the exhaust. I've also seen some guys cut the Y-pipe and just weld the housing section onto their mid-pipe. The only thing I will say here is that Pypes does have some strict guidelines if you want to keep the warranty, but they are all laid out on the install instructions. So if you're interested in keeping that warranty, just take note of that. Pypes does make what they call an X-change X-pipe that's specifically designed to work with these cutouts, if that's something you might be interested in. No matter where you position the kit, the valve opening should always point towards the rear of the car and away from anything that can be melted. When you're looking at your wiring harness routing, just be sure to keep the wiring away from the actual exhaust system and all moving parts like the steering shaft and brake pedal shaft. You'll also have to find a location to mount the switch, which will be connected to the female weatherpack connector and the wiring harness. Just add 12 volts, and decide which position you want open to be. After that, it's just a matter of simple wiring and grounding. You can surely extend wires here if you need to or if you want to go directly to the negative battery terminal, but just make sure that everything's properly powered. There is some care involved with the cutouts if you want to make sure that they have a nice long life. Pypes suggests regularly removing and cleaning them in a mild solvent, as well as giving them some WD-40 just to keep everything moving and not binding up. You should also keep an eye on the wiring just to make sure it stays looking healthy and doesn't have any rubs or loose sections. Lastly, guys, it kind of goes without saying here, but these may not be exactly street legal in all areas, especially areas with strict emissions, so just be mindful of that. To summarize everything that I just said about the install, it's not a difficult one, but it does require some expertise. It's not a bad idea to take this to a shop for the install, especially if you're considering modifying these in some way. If you do take this on yourself, you're probably looking at a few hours to get it all done. I'll call this one a two out of three wrenches on the scale, just because you will need a little bit of both mechanical and wiring knowledge for this one here. Okay, wrapping things up here, the Pypes electric exhaust cutout kit is great for anyone that like their Mustang to be tame when they need it to be and loud when The Man isn't watching or listening. The cutouts work off of a switch that's wired into the cabin for driver control. You can work it into your exhaust system in the mid-pipe area. You can check this kit out more online for yourself. And for all things Mustang, keep it right here at

    Flip a Switch. This electric cutout exhaust kit from Pypes will give you the flexibility to switch from a restricted exhaust to a wide open one with the flip of a switch. This kit is far superior to the others on the market, offering better manufacturing, materials, and higher quality components. With the flip of a switch, the included wiring harness allows you to control both cutouts, switching from stealth to screaming in the blink of an eye.

    Quality Construction. A CNC machined, polished billet aluminum housing insures a precise fit with the Y pipe, and a double butterfly seal with an o-ring insures leak-free performance. It also features a built in thermal protection device to prevent damage due to engine overload. With stainless steel fittings, hardware and weather-tight exterior connectors, these Pypes exhaust cutouts are guaranteed to last. In fact, Pypes is so confident that these are the highest quality cutouts on the market, they back them with a limited lifetime warranty.

    Complete Kit. This complete kit includes two 2.5" Y pipes, 2 cutouts, zinc plated mounting hardware, extra thick gaskets, and wiring harness. Unlike our competitors, who expect you to purchase a Y pipe separately, this complete kit includes Y pipes with a 3" flange for ease of installation.

    Application. This Pypes Dual Electric Cutout and Y-pipe Kit is designed for 1979 to 2014 Mustangs equipped with 2.5" diameter Mid Pipe exhaust piping.

    NOTE: This system may not be street legal in all areas. Please check your local laws.

    Fitment: 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 Details

    MPN# HVE10K

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (2) 2.5" Y-Pipes
    • (2) Cutouts
    • (2) Extra Thick Gaskets
    • Wiring Harness
    • Mounting Hardware
    Installation Info
    Tech Specs
    Will it fit my Mustang?
    • Boss 302 - 12, 13
    • Bullitt - 01, 08, 09
    • Cobra - 93, 94, 95, 96, 97, 98, 99, 00, 01, 03, 04
    • Cobra R - 93, 95, 00
    • GT - 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13, 14
    • GT500 - 07, 08, 09, 10, 11, 12, 13, 14
    • LX - 87, 88, 89, 90, 91, 92, 93
    • Mach 1 - 03, 04
    • Other - 79, 80, 81, 82, 83, 84, 85, 86
    • V6 - 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13, 14

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    Questions & Answers (60)

    5 Top Rated Questions

    Pypes cutout kit I have an 89 Mustang GT with BBK shorty headers with an X-Pipe. I tried a Dougs cutout kit and it was just to big. There was just no way to install the electric section of the cut outs. Will this system fit for sure. I don't want to buy and just have to send another one back. Thank you for the help. Lonnie

    • As long as the piping on your stang is 2.5" you'll be fine.

    Helpful (5) Show 4 more answers

    Will exhaust gases heat up the under side of the vehicle? Is it a good idea to put 3" down pipes to divert the heat away? Maybe a heat shield panel? I drive a Mustang GT 2013. I'm just afraid of the heat build up underneath my car.

    • The Pypes Electric Exhaust Cutout Kit should not cause excessive heat buildup, especially while moving, however it is a good idea to install a turn down tip to allow the exhaust gases to move away from the body of the car.

    Helpful (4)

    possible trouble code activation by using this cut out system will the of free flow exhaust (bypassing the cat converter) signal an engine problem to the cars computer thus tripping a check engine light

    • It shouldn't trip a check engine light because 1. The cutout just routes most of the gases out of it, some will still go past the second sensor. 2. The cutouts should only be open when at the track.

    Helpful (4) Show 3 more answers

    X pipe? will this fit on the pypes mid-muffler conversion for the V-6, which has an X-pipe. so is this only for Y pipes or will it fit X-pipes?

    • electric cutouts can be placed almost any where on an exhaust system as long as there's enough room for the pipe to be installed. they should be able to install after the x-pipe of your exhaust

    Helpful (4) Show 4 more answers

    Can these be used with the Boss side exhaust kit? Can these cutouts be used in addition to the Boss 302 side exhaust kit? If so, will they cause trips in the O2 sensors?

    • The Pypes Electric Exhaust Cutout Kit will essentially work on any exhaust, as long as there is sufficient clearance where you plan to mount the cut outs. As long as there is clearance in your choice of location from scraping, wiring or any sensitive component, this will work well.

    Helpful (2)
    Post Your Question
    10 More Questions
    Hello just wondering if this toggle switch for this kit need to be held up to open the valves and then held closed to close them. For the set up I want I want to just flick the switch up and leave it and when I want them closed I can just flick it off like a light switch, 1 answer
    tune using these will screw up a tune when opened ?? 3 answers
    Will these fit on my 2014 v6 mustang? just asking because i thought mine had the 2.25 inch midpipe but this says it fits all 1 answer
    Can this be done for borla xr1 headers/s type catback 1 answer
    i have a 98’ gt and i was wondering if these fit before the mid pipe, i was planning on putting them on just after my headers so i can get a nice straight pipe sound. thank you! 1 answer
    Will this work on a 2016 GT? If not, what are the problems and possible solutions? 1 answer
    my car sound to much noisey can this product make the car sound not noise ? 1 answer
    If the motors for the cutouts ever burn out, is there a place i can buy replacements? 1 answer
    Would this set up pass smog in California? Even if the lever is closed? 1 answer
    i have pypes axle back ( is this cutout item compatible with the axle back i have ? 1 answer

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    Customer Reviews (39) Write a Review

    Overall Rating 3.9

    out of 5 stars

    Installation Time:Full Day

    Installation Cost:$100-$250

    • Loudness / Volume 4.657895 4.7
    • Exhaust Note 4.710526 4.7
    • Fit & Finish 4.157895 4.2
    • Bang For Your Buck 4.210526 4.2

    • 5/5

      January 13, 2019

      Nice fit!

      Works Great! Gives a deeper throatier sound with the cutouts open!


      Year: 2014 Submodel: GT

      Helpful (4)

    • 1/5

      Installation Time: Full Day

      December 29, 2018

      Bad product!!!

      Had high hopes for these when purchased since the price was higher than most I thought they would be a quality product. Switch burned out in less than two weeks of barely using it. Then the cutouts began to rattle with less than 200 miles on them. I took them off and found that the housing had chewed itself up and would not seal. It took almost a month to get pypes to take them back and fix it. They sent a new set only to have them rattle like something is about to fall off within 200 miles again. Would not recommend to any one. Thoroughly disappointed. Had nothing to do with AM and their outstanding costumer service!


      Year: 2004 Submodel: GT

      Helpful (5)

    • 1/5

      Installation Time: Full Day

      October 08, 2018

      Bang TO your Buck! Ouch!

      I purchased kit for my '11 stang. I paid $300 to have it professionally installed with welding. In less than 3 months, the switch got really hot and burned out. Spent another $100 to replace/install new switch. 6 months later, I hear loud rattling. Paid $100 to take off cutouts to send back to have it repaired. Parts are covered, but I was told I was responsible for paying for the shipping. Result: Pypes said it just needed cleaning and returned the cutouts. Paid another $100 to re-install. Once installed, it still made the rattling sound. Now the rattling is even louder. Rather than deal with paying more money to uninstall and ship it back, i just leave it open to avoid that rattling sound. What a joke.


      Year: 2011 Submodel: V6

      Helpful (7)

    • 1/5

      October 05, 2018

      Loud when open, rattle when closed

      This is the one regret I have as far as mods go. When open they are pretty loud, not as loud as you would expect with headers as well but loud. That is about as far as the good goes. I've had to replace a switch once and now one of the cutouts rattles when closed so loud it makes my car sound terrible. Hoping to hear back from Pypes soon about replacing. Will probably just go back to an x-pipe and be done with it.


      Year: 2003 Submodel: GT

      Helpful (7)

    • 2/5

      August 31, 2018

      Poor QA and Service Response

      The internal switch is VERY bad. Burn out. Contacted Pypes first time for replacement and get them - they burned out. Contacted Pypes twice after to say I would be happy to pay for replacements - no response. Will not buy anything from Pypes again. Going with Hooker. Sorry AM, you don't stock them.


      Year: 2014 Submodel: V6

      Helpful (5)

    • 1/5

      July 07, 2018

      Does not fit 13 gt500

      Exhaust size on the 13 gt500 is 2.75. Had mine wired up and brought to exhaust shop to be installed. The 2.5 inch y adapter is way undersized around 2.25 and at the large flare end measures 2.5. I bought this kit to clamp in didn’t want to weld. Also only comes with 2 clamps.


      Year: 2013 Submodel: GT500

      Helpful (6)

    • 5/5

      Installation Time: Afternoon

      June 08, 2018


      Sounds amazing with the Hod rod cams! Don’t get ripped off on the install though. A lot of shops will do the welding work for around 100 bucks. Wiring is fairly easy by yourself. Very happy with these on the car.


      Year: 2006 Submodel: GT

      Helpful (7)

    • 3/5

      Installation Time: Afternoon

      June 02, 2018

      2007 Mustang Gt

      If you want the car to be loud these will get the job done! I completed the wiring myself by drilling through the body right below the shifter. The button sits next to my cup holders, all around great look in the car. Getting to the cons of the product, these should be welded in i paid around 150. Pypes did not design a left and right valve. Because of this one of the valves directs heat towards the floor panel. No big deal if you lay down the correct heat mat under the rug. The terminals on the motors itself are a bit flimsy for my liking, i have herd stories of them burning off. I try to limit the amount of time i keep these open one being to sustain my ability to functionally hear, and two to decrease the chance of the wires to motors burning off. All together i wanted a loud bark and it got the job done enough to set off car alarms.


      Year: 2007 Submodel: GT

      Helpful (7)

    • 1/5

      May 28, 2018

      You will need to weld

      They only give clamps for one side and if you notice every pic shows welded connections. Convienantly if you have a “Pypes” product already it will bold up but if not it won’t. Be sure you know that. Not to mention their are others out there that are 1/2 to 1/3 the cost. Search you will find. Better off buying those and paying for install rather than getting roped in by a name.


      Year: 2013 Submodel: GT500

      Helpful (6)

    • 1/5

      Installation Time: Full Day

      May 17, 2018

      complete junk

      cost a foryune to have installed only to have them flapping constantly from bad parts . swapped them 3 times and then took them off after 1 month . do not waste your money


      Year: 2004 Submodel: GT

      Helpful (5)

    • 5/5

      May 14, 2018


      Had them installed right after my headers and it turns my car into a monster when I open the valves. So far I'm loving the product. I have a stock mid pipe and cat back so the start up in the early mornings isn’t too loud for the neighbors...but as soon as I hit the freeway I let the horses loose.


      Year: 2006 Submodel: GT

      Helpful (5)

    • 3/5

      Installation Time: Afternoon

      April 18, 2018

      Better options out there

      the fitting was tricky. it bags the floor of the car in rough terrain. The switch on/off malfunction all the time.


      Year: 2013 Submodel: GT

      Helpful (8)

    • 5/5

      Installation Time: Shop Install

      March 18, 2018

      Classic muscle sound

      Overall Great product very loud and extremely choppy paired with the hot rod cams


      Year: 2007 Submodel: GT

      Helpful (5)

    • 3/5

      Installation Time: Afternoon

      February 21, 2018

      Good concept, poor quality.

      Purchased these so I can have drag car sound without angering the neighbors. For that purpose it’s great. Love how you can adjust the flaps so you’re not running just all open or closed. The issue is with the switch. Poor plastic quality. Replaced the first switch after 6 months; no problems getting replacement from Pypes (actually sent me 2 so I’m getting the impression they know it’s an issue). Two months later the second switch has failed; also so much play in the movement of the switch. Won’t install a third switch from Pypes. Currently working with my shop for an alternative.


      Year: 2008 Submodel: GT

      Helpful (7)

    • 3/5

      Installation Time: Full Day

      February 07, 2018

      Exhaust cutout kit

      The only problem I have is the switch is bad and it’s not closing or opening my pipes


      Year: 1994 Submodel: Cobra

      Helpful (6)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      December 12, 2017

      Pypes Electric Exhaust Cutouts

      They have a great sound when you want to be loud.Am running header with the cut out and Bassini exhaust.Its a great set up when you want to wake up neighborhood


      Year: 2005 Submodel: GT

      Helpful (6)

    • 3/5

      Installation Time: Afternoon

      December 04, 2017

      Not the greatest

      After a week the switch stopped working so need a new switch or climb under the car and open by hand


      Year: 1989 Submodel: LX

      Helpful (6)

    • 5/5

      Installation Time: Full Day

      October 05, 2017

      Hearing aids

      Installed these on my 05 mustang gt. enjoying the quick control from loud to quiet. Welded them right after the headers. Definite head turner. Sounds great with the ford racing cams and the whipple supercharger.


      Year: 2005 Submodel: GT

      Helpful (5)

    • 5/5

      Installation Time: Afternoon

      September 03, 2017

      Pypes electric cutout

      These are absolutely wonderful on my 14 Shelby. The sound is music to my ears.


      Year: 2014 Submodel: GT500

      Helpful (6)

    • 5/5

      August 23, 2017


      I love how just a switch can turn my car into a monster!


      Year: 1991 Submodel: LX

      Helpful (5)

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