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

Market Price $537.99 You Save 12% ($63.00)
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  • Item 20044
  • MPN# HVE10K

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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

    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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    50 Questions / 17 Answers

    Ask a Question

    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.


    Show 4 more answers Helpful (5)

    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.


    Show 3 more answers Helpful (4)

    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


    Show 4 more answers Helpful (4)

    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)

    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.

      Rob D

    Helpful (1)

    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,


    • Hello! With these Pypes Electric Exhaust Cutout Kit - 2.5 will have to hold down the switch. It will only take a second or two for a full open but you have the adjust-ability of whether you want them closed, partially open or fully open.

      Ryan H

    Helpful (1)

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    Customer Reviews (26) Write a Review

    Overall Rating 4.6

    out of 5 stars

    Installation Time:Full Day

    Installation Cost:$100-$250

    • Loudness / Volume 4.96 5.0
    • Exhaust Note 4.96 5.0
    • Fit & Finish 4.72 4.7
    • Bang For Your Buck 4.76 4.8

    • 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 (0)

    • 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 (0)

    • 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 (1)

    • 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 (0)

    • 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 (0)

    • 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 (0)

    • 5/5

      August 23, 2017


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


      Year: 1991 Submodel: LX

      Helpful (1)

    • 5/5

      Installation Time: Afternoon

      June 07, 2017

      best sound ever

      My Customer is very happy, with new exhaust sound, easy to install, fast and nice price, i give 5 star note.


      Year: 2015 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Full Day

      May 20, 2017

      Great product

      This was one of the first mods that I did to my 2007 mustang and it was a great buy worth every dollar. Two very minor things weren't there. The cutouts came with one side to be put over the exhaust pipe but the other end was the same size as the exhaust pipe so I went and bought some couplings and the clamps for that to complete the install costing around another $50 and 3 of the bolts for the motor were missing but other than that it was a pretty smooth install. The sound difference is awesome!!! Depending on where you put the cutouts the sound inside will be different obviously but for me the cutouts are right underneath me so when I open them it's extremely loud, loud as in you can't talk to the person next to you unless you scream at them and if they are closed it's like your stock exhaust. So I'd say the cutouts do their job perfectly.


      Year: 2007 Submodel: GT

      Helpful (2)

    • 4/5

      Installation Time: Shop Install

      September 19, 2016

      Nice product, great sound, but-------

      Bought these in June and had my macanic install them. What a difference in sound. I have shortly headers with American Thunder Flowmater mufflers. They worked find for about 2 months. Then I opened them up to make a run thru at a car show. I went to close them and they wouldn't close. Had it checked out and found out that the interior switch burned out. Contacted AM and they gave me information on how to get a new switch from PYPES. I called the number and explained what the problem was thinking I'd get a hassle from them. Surprise, with no questions asked, PYPES said they'd send me a new one. They didn't send one; they sent two (2). Hats off to AM and PYPES FOR EXELLANT service. This is why AM is the greatest. I have to rate the product a 4 just because of the switch problem. Waiting to see if this switch goes bad. Otherwise, I'm very happy with this product.


      Year: 2005 Submodel: GT

      Helpful (2)

    • 5/5

      September 07, 2016

      WOW WAKE UP Cutouts

      These are really put together well. They give you plenty of wiring and everything you need to install. I placed them after the low restriction cats before the mufflers and out the side of the car just in front of the rear wheels Love the sound My GT is lowered if you have lowered you car i highly recommend replacing your side skirts with Roush Side Skirt if you go out the side or you will bottom out on you exhaust. The only problem i have with mine is they will not close all the way when very hot but after cooling they are fine no other problems. Love the sound and the look. I have not been to a show where someone did not ask me where i got them


      Year: 2000 Submodel: GT

      Helpful (5)

    • 4/5

      Installation Time: Afternoon

      May 13, 2016

      Got a bad batch

      First thing is these things are built good but I must have got a bad one because my cutouts had to be removed when they stopped working and would close or open fully making them rattle horribly. The driver side flap also came loose within a month or so of driving. I do believe these cut outs are built good because I've bought from pypes before and never had a problem with quality.


      Year: 1998 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      May 11, 2016

      08 mustang gt Electric cutout

      Great product lil pricey but definitely worth it i got them install at a speedshop it cost me roughly 300 dollars my toggle switch was install in center console the sound is unbelievable when open and when closed goes back to normal rumble but all the product thanks to American muslce again i love how fast i get my order and ur service must buy for track and street cars


      Year: 2008 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      April 03, 2016

      Controlled Chaos

      Went with a straight stock out the back with the exhaust tips tucked behind the bumper. The cutouts open and go out the CDC side exhausts. Had a hard time finding the room with the car lowered 2 inches... Sounds amazing with the push of a button... Not cheap but worth it for something different.


      Year: 2000 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Afternoon

      March 09, 2016

      Great to have if you have cams

      One thing I will say is, if you have a good exhaust guy, don't buy the piping, just order the motors and wiring. My exhaust guy made a custom piece for it to bolt up to and only cost me 60 bucks. I did the wiring myself on my 2010 base gt. The switch is inside the center console next to the auxiliary hookup. There is a o ring gasket around where the flaps open and close, watch these and make sure they are in all the way. Mine came out partially and am doesn't have replacement gaskets. Other than that I love them. I've had them about a week now and drive everyday with no issues.


      Year: 2010 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      January 18, 2016


      Amazing add on! I have wanted to add cut-outs to one of my cars for a few years now and when I saw this I knew I had to have it. This is mixed with my Magnaflow Competition Cat back exhaust, I thought that was pretty nice and loud already. But when I got installed by flipped that switch for the first time, it was AMAZING! If you want your Mustang to scream with the flip of a switch then this is a must.


      Year: 2013 Submodel: GT Aiea, HI

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      November 18, 2015

      Worth every penny

      Bought this for my 14' 5.0, all exhaust stock with cats. Flip of a switch and wow this thing sounds like a monster, yes you do lose torque and power. Got it installed at a friends shop, had custom wiring for switch.


      Year: 2014 Submodel: GT Canyon Country, CA

      Helpful (3)

    • 5/5

      Installation Time: Afternoon

      August 27, 2015

      pypes cutouts

      pypes were installed from a local muffler shop, they charged me 400 because they needed to make some adjustments since i wanted to keep my off-road x pipe..i also got larger tips installed with the price. i did the wiring myself took about 2 hours just because i double checked everything more than twice..this pypes definetily make a huge difference in power and sound, feel the difference when i take off..haven't had a problem with the cops YET! definitely makes a deeper more muscular tone to your pony..i recommend this item for those that want the loud aggressive sound without having the neighbors hate you, all thanks to the on/off switch!


      Year: 2000 Submodel: GT Torrance, Ca

      Helpful (3)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: 0-$100

      July 17, 2015


      The sound is aggressive and throaty, sure to turn heads, 100 bucks at meineke to install, wired myself. So loud and bassy it vibrates whatever you have in the cup holder


      Year: 2008 Submodel: GT Swansea, SC

      Helpful (3)

    • 4/5

      Installation Time: Afternoon

      February 27, 2015

      Easy install amazing sound but clamps could be better

      The install was very simple. Connected it directly to my pacesetter midpipe but you will have to cut out enough of the pipe running to the mufflers to fit them in. The wiring with the included harness was amazingly easy. The harness was a thing of beauty. The sound with my long tubes was awesome. My wife hates loud exhausts and this gave me the best of both worlds


      Year: 2010 Submodel: GT JOHNSTON, RI

      Helpful (2)

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