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Pypes M-80 Center/Center Bullet Style Muffler - 2.5 in. (79-04 All)

Market Price $59.79 You Save 16% ($9.82)
Our Price

$49.97 (each)

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  • Item 20108
  • MPN# MVR200S

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Features & Details

  • Aggressive Throaty M80 Tone
  • Straight-Through Design for Superior Flow
  • 4" Round Inline Design
  • 2.5" Inlet/Outlet Diameter
  • 304 Polished Stainless Steel Construction
  • Sold Individually
Aggressive M80 Sound. The M80 "Race Pro" muffler has a straight-through design that features a layer of stainless mesh around a unique internal 3.5" louvered tube, accompanied by a healthy stuffing of basalt insulation that results in an aggressive muscle car tone and an improved exhaust flow for more power.

Polished Stainless Steel Construction. Constructed from polished 304 Stainless Steel to resists rust and corrosion, the Pypes M80 Muffler features a round 4" diameter tubular bullet style casing that is welded closed to ensure a long life without any annoying rattles.

Application. The Pypes M80 Muffler's outer case measures 14" long and 4" round, it features a 2.5" diameter inlet and outlet in a straight inline configuration. Making this is the perfect muffler for the 1979 to 2004 Mustangs.

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 Details

What's in the Box
  • (1) Muffler
Installation Info
Tech Specs
Will it fit my Mustang?
  • Bullitt - 01
  • Foxbody - 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93
  • Mach 1 - 03, 04
  • V6 - 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04
  • Cobra - 94, 95, 96, 97, 98, 99, 01, 03, 04
  • GT - 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04

People Who Bought This Item Also Bought

Most Helpful Reviews


I wanted to replace my Flowmaster 40s, and get more sound out of my 4.6 2v. I went with m80s because of what I read and heard on the internet. I lost some of that old school muscle car sound provided ...

Read More
Helpful (1)

Sean 02 GT

These M-80 bullet style mufflers sounds great on my GT they will definitely get people's attention I will definitely recommend the mufflers to any Mustang enthusiast out there ... And they also sound ...

Read More
Helpful (1)

Overall Rating 4.7 out of 5 stars
Read All 100+ Reviews

Customer Photos (31) Submit Your Photo

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33 Questions / 6 Answers

Ask a Question

Will this fit a stock single exhaust V6 Mustang? Or will I have to swap to a Dual Exhaust (which I don't have the money for) Just trying to make it sound louder and meaner.


  • You do not need to do a dual exhaust swap to install this and have this work.


Helpful (1)

All of the pictures I've seen have shown this muffler connected to a dual exhaust. I was wondering if it would still sound the same if it were put on an all stock 04 mustang V6?


  • Hi, This Pypes M-80 Bullet Style Muffler wont sound exactly the same on a V6 as a V8 but it will sound pretty similar.

    Chris J

Helpful (1)

Does anyone know if this is legal to have in IL?


  • Unfortunately, every state and county has different laws and regulations a car is allowed to meet. We recommend consulting your local emissions station or contacting the manufacture for confirmation on the legality of the part in your area.


Helpful (0)

Is this carb/smog legal in CA?


  • The Pypes M-80 Bullet Style Muffler (79-04 All) as with other mufflers are not subject to CARB compliance as they do not control emissions.

    Pat K

Helpful (0)

Are these smog/street legal for Bay Area, CA??? THANKS!!!


  • The Pypes M-80 Bullet Style Muffler does not affect emissions as it is designed to be installed behind the catalytic converters, therefore being smog legal. As far as legality on the street, we would recommend speaking with your local authorities regarding any sound ordinances in your area as these muffler are loud.


Helpful (0)

I was wondering if the muffler included the hangers?


  • Hey Robert, No it will be just the muffler there will be no need for the hanger


Helpful (0)

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Customer Reviews (100+) Write a Review

Overall Rating 4.7

out of 5 stars

Installation Time:Full Day

Installation Cost:$100-$250

  • Loudness / Volume 4.409091 4.4
  • Exhaust Note 4.597403 4.6
  • Fit & Finish 4.61039 4.6
  • Bang For Your Buck 4.837662 4.8

  • 5/5

    August 25, 2016


    I wanted to replace my Flowmaster 40s, and get more sound out of my 4.6 2v. I went with m80s because of what I read and heard on the internet. I lost some of that old school muscle car sound provided by the 40s, and my o/r h-pipe but definitely gained some decibels especially under wot while killing a lot of highway speed drone. As a side note the labor was a little much at $305, or maybe I just got screwed. The 40s were offset/offset design, and the m80s straight through design. So at least for my particular application it seems I would have been money ahead to purchase the pype-bomb cat-back system. All that said the M80s pump out GREAT SOUND!!!!


    Year: 2001 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    June 08, 2016

    Sean 02 GT

    These M-80 bullet style mufflers sounds great on my GT they will definitely get people's attention I will definitely recommend the mufflers to any Mustang enthusiast out there ... And they also sound amazing in the water trap once again thanks American Muscle ...


    Year: 2002 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    March 23, 2016

    Awesome Item!

    This thing sounded amazing on the 2003 V6 I put it on. It Gave my 3.9L a little more roar


    Year: 2003 Submodel: V6

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    March 03, 2016

    just awesome

    Love the pypes M80 s they sound awesome compare to my flowmaster s 40 sires definitely recommend them


    Year: 2003 Submodel: GT

    Helpful (1)

  • 4/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    November 23, 2015

    Love the sound

    Installed on my 03 cobra, with BBK o/r xpipe and m80s, terminator sound the way it should! Free quick shipping thank you AM another great purchase.


    Year: 2003 Submodel: Cobra Liberty MO

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    August 01, 2015


    I bought this pypes and I wasnt sure about it but I drove my 2003 Mustang to the mechanic and the guy installed. The sound is amazing just right what I want it gives more style to my pony.


    Year: 2003 Submodel: V6 WORCESTER, MA

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    June 17, 2015

    Pypes M80's

    Ordered these after reading many reviews. I was really looking for some relief from the drone of the 2-chamber Flowmasters. Like many others who have reviewed here I will say these are definitely quieter at idle and light cruising. They come alive when you get on it! It's a very different sound than the Flows (at least from inside the car), won't say I like it better. In my own humble opinion I do think the Flows sound better on a Fox than these but they did produce the result I was after. Sounds more like a modern 5.0 (or I'm going tone deaf from the years of drone :P). They did in fact reduce much of the drone. There is still some there but my migraines will certainly appreciate the reduction! Is it a cheap muffler? I say yes in cost only. It's well built and nicely finished. Is it good value? Yes! My exhaust consists of stainless unequal length shorties into a BBK X-pipe with cats, on into (now) these M80's and out through 2.5" tails. I would definitely recommend these to a fox body owner if you are looking for Flowmaster alternatives!


    Year: 1989 Submodel: Other Newmarket, ON

    Helpful (1)

  • 4/5

    Installation Time: Afternoon

    June 27, 2014

    Great sound in an affordable package

    I have went through 4 different sets of mufflers before finding these and I absolutely love them. My exhaust setup is hooker shorties, 2.5 inch downpipes, 2.5 inch off road H pipe, 2.5 inch dynomax flowtubes, the m80 mufflers, and 3 inch flowmaster tailpipes. These are cheaper than anything els I have found and so far have the best sound as well. Why spend $100 each on some spintechs, magnaflows, or flowmasters when you can get 2 of the m80s that sound better and flow better for less than $100 shipped? I will now be using these on all of my builds when it comes time for exhaust. They are mild but noticeable at idle and when you get on it they really let you know it.


    Year: 1989 Submodel: Other Waterbury, CT, USA

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    January 04, 2014

    Race car sound

    i´m running these with a custom o/r x pipe and wow. the sound is AMAZING if you like the loud race car kinda sound.


    Year: 2002 Submodel: GT Boca Raton, FL, USA

    Helpful (2)

  • 5/5

    Installation Time: Afternoon

    June 10, 2013

    eliminated the drone

    i have a 2010 v6 and deleted the muffler. i had horrible drone on the highway and this muffler eliminated that. it fit great and looks great too.


    Year: 2010 Submodel: V6 Butler, PA

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    April 16, 2013

    Love these bad boys

    What ever you do don't waste your money on slp & etc. These sound just as good if not better. I just welded them into the middle of the car and made my own cat back system. Sounds great. Thanks AM once again!!


    Year: 2005 Submodel: GT Spring, TX, USA

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    October 28, 2012

    Sounds great

    Sounds just the way I wanted very happy with resualts my grin was from ear to ear


    Year: 2003 Submodel: GT Warden, WA 98857, USA

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    September 23, 2012

    Very satisfied with producut!!

    True Dual exhaust, no cats, V6 sounds amazing. Very satisfied with these resonators, it has just the sound I was looking for in my 2000 V6. Motor is stock no other mods at the moment. At WOT, resonators create a unique sound I have heads turning everytime.


    Year: 2000 Submodel: V6 OKC

    Helpful (2)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    August 01, 2012

    These Mufflers Are Wicked

    I took the Flowmasters off and replaced them with these M80s. I didn't know what to expect, but let me tell you these mufflers sound absolutely W I C K E D! If you're listening to video on youtube to get an idea of what these sound like, the videos do not do justice. You have to "be there" for your ears to really get the full effect. hahahaaaa Just be careful and easy on the accelerator while in town! Thanks AmericanMuscle.com , great service! (as usual) ☺


    Year: 2003 Submodel: GT Greenfield, Oh

    Helpful (3)

  • 5/5

    Installation Time: Shop Install

    February 20, 2012

    Pypes M80 on 2005 Mustang GT

    well i had these installed on my 2005 mustang, im not a big fan of axle backs, when i first had them installed my setup was BBK long tube headers with an Offroad H pipe. the sound was really throaty not too loud or high pitched just a good rumble until really got on it...at high revs they would drone really bad with the offroad H two weeks later i took the H pipe off and put an Offroad X-pipe on and it sounded waaaaay better...no rasp or drone at all with these mufflers and the X pipe combined...my suggestion to anyone looking to get these is to couple it with an off -road X-pipe, its a lot louder and has a cleaner throatier sound than with the H-pipe overall good mufflers and for the price definitely worth it!!


    Year: 2005 Submodel: GT Texas

    Helpful (2)

  • 5/5

    Installation Time: Less than 1 Hour

    January 28, 2012


    I had researched these mufflers on youtube and was in love ever since. I knew this was the exhaust my car needed to have! So i ordered them the next day from AM and wow did i receive them fast. I got them in about 4 days and was very pleased with the service yet again here at AM. The following day i had these mufflers installed at my local exhaust shop and couldn't wait to here what they sounded like. I am also running an off road x-pipe on my 2008 GT. After they were installed I started the car up and WOW! You Tube did not do these mufflers any justice. They sounded 100 times better in person. Pypes really nailed it with these M-80 Mufflers. This is truly how a mustang is supposed to sound. I highly recommend this product. It is high quality at a very reasonable price. Everyone always asks me what kind of mufflers I am running on my Mustang, and I am always proud to say Pypes M-80 Bullet Mufflers. Thanks a lot AM!!!


    Year: 2008 Submodel: GT Castro Valley, CA

    Helpful (3)

  • 5/5

    Installation Time: Afternoon

    January 27, 2012

    amazing sound



    Year: 1989 Submodel: Other OXFORD PA

    Helpful (1)

  • 5/5

    Installation Time: Full Day

    October 20, 2011

    Great Muscle Car Sound!!!

    I used this product on my 2007 V6 and it works, fit, and sounds great. I was debating on these due to AM's listing saying "(79-04)", but read a couple reviews and saw others used them on their S197 Mustangs and tried them out. So i have Pypes V6 Cut And Clamp X-Pipe with these and created a custom True Dual Side Exhaust and it sounds amazing! I get compliments and looks all the time "It sounds like an 8!". Definitely not a "cheap" product it is well worth the money for them. i\I would pay more for them even they're very durable/HD and sound great. DEFINITE BUY IF WANTING OLD FASHION MUSCLE CAR RUMBLE AND GROWL!!!!


    Year: 2007 Submodel: V6 MI

    Helpful (2)

  • 5/5

    May 04, 2011

    07 GT w/ m80's!

    Had these mufflers installed on my 07 GT, i have a pypes o/r x pipe and had the m80s welded in the middle following a custom axle back muffler delete all the way out, (straight pipes) and dammmn! these are loud! they sound mean! nice deep tone when idle, when you rev it up you will wake up the block! nice mufflers definately buy


    Year: 2007 Submodel: GT

    Helpful (16)

  • 1/5

    Installation Time: Afternoon

    April 12, 2012

    Do not buy!!

    I bought these and boy do i regret it. There extremly loud and im not talkin about a good loud either. Really raspy almost sound like a truck with straight pipe. If you go past 2500 rpms you might as well turn the radio off. Sorry should of stuck with magnaflows but that's what you get for trying to save a buck.


    Year: 2002 Submodel: GT Houston, TX, USA

    Helpful (18)

    • Response from AmericanMuscle

      This is the first I've heard someone disappointed with the sound these mufflers give off. I'd suggest coupling these with an O/R X-pipe as some others have commented that the two combined sounds great. If you'd like, please contact our Experts and they'd be more than willing to help you find the sound your looking for!

      Lisa , Customer Care

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