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Pypes True Dual Off-Road Exhaust (98-04 V6)

AmericanMuscle no longer carries the Pypes True Dual Off-Road Exhaust (98-04 V6). Please check out 1999-2004 Mustang Exhaust Combos for an updated selection.

Features, Video & Details

  • True Dual Exhaust for a V6
  • Includes Off-Road X-Pipe and Cat-Back
  • Increases of 15 to 25 Horsepower
  • 2.5" 409 Stainless Steel Tubing
  • 3" Polished 304 Stainless Steel Tips
  • Fits 1998 to 2004 V6 Mustangs

Review & Installation Video

Review & Install Video

JUSTIN: Hey I'm Justin with and this is our PowerPack Bolt-On Build-Up for all 99-04 V6 Mustangs. Now, before we get started, let's address the elephant in the room. From the factory, these 3.8 L V6s weren't the baddest Mustangs on the block, just in terms of all-out performance. But thanks to the large aftermarket support, and bolt-ons that can really squeeze every ounce of power out of any car, well these V6s can be turned into quite the competent little street-car. So that's exactly what we're going to show you here today. But before we get into it, we're going to grab a quick baseline number first just to see what we're starting with. Then we're going to hand the car over to the crew, to get everything installed. JUSTIN: Hey Mike, what's up man? MIKE: Oh, nothing much, man, what's going on? JUSTIN: It looks like we tackled some of the basics under here, I see that SR Performance Cold Air Intake, now obviously that's going to get us a little power of course, but maybe explain to us, maybe what else we can expect from using stuff like that? MIKE: Well first is price, it's a very budget-friendly piece. It's easy to install, looks great, it's no-tune required, and we should see some increase in miles-per-gallon too. JUSTIN: All right, cool, man. Now I notice a little yellow under the hood here as well, that's usually the calling card of Accel products. Tell us a bit more about this Super Coil Pack here. MIKE: You're going to get some horsepower & torque as well on this, but the main thing it's going to smooth out our idle, give us better drive-ability and give us a cleaner, hotter spark. JUSTIN: That's probably pretty important with an older car, such as this. MIKE: Absolutely. JUSTIN: Right on, man. Now I also know we've got the Pipes True Dual system on the car, that's been on for a little while, we're not going to lie, being car guys, this car didn't have much of a chance coming in here with a single exhaust. MIKE: Oh yeah. JUSTIN: So, talk about the benefits of a True Dual system on our V6. MIKE: It's going to increase horsepower and torque, more importantly for most of the guys, it's going to increase the sound, it's an aggressive sound, it's high-quality and it's also easy to install. JUSTIN: Now what's a Mustang without dual-exhaust coming out the back too, right? MIKE: Exactly. JUSTIN: Now, finally, I guess we can be safe to assume you're going to toss one of your custom Bama tunes into the mix? MIKE: Oh yeah. JUSTIN: Awesome man, now what's that going to do for us? MIKE: going to wrap all of our mods together, and make it a complete package. The fuel, the spark, the cooling fans, and being that it's an automatic, we're going to adjust the shift firmness, and the shift links. JUSTIN: Alright man, I guess there's only one more thing to do. You ready to see how much power this little 3.8's going to make? MIKE: Let's do it. JUSTIN: Alright. JUSTIN: So our baseline run with our 2006 V6 gave us 149 horsepower & 185 ft/lbs of torque. With our power pack installed we put down 163 horsepower & 192 ft/lbs of torque, giving us a peak horsepower gain of 14 over our baseline numbers, and gains of 15 horsepower and 15 ft/lbs of torque throughout the curve. Now it's obvious Mike was able to work his magic with the bolt-ons and the tune, but we wanted to give our V6 a little more giddy-up. So we installed a set of Ford Racing 373 gears along with Auburn's limited slip differential, now of course the gears are going to give us that increased acceleration we're looking for, but the diff's going to be equally as important. The limited-slip differential's going to distribute power to both wheels evenly, help us get off the line, and pull us out of the turns but, most importantly, no more embarrassing one-wheel peels. Alright, with everything wrapped up, let's get our V6 off the dyno and on to the streets so we can see how it does with all that new power, along with those acceleration goodies. JUSTIN: So we're back out in our 2000 V6, after the PowerPack's been installed, and we'll just get one thing out of the way, right away. Is our V6 faster than the GT500? Absolutely not, but that's not a big surprise. What I will tell you though, is that our V6 is significantly quicker all around. The acceleration pulls from, pretty much idle, all the way to redline now, as opposed to before, when it kind of fell on its face around 4000 rpms, 'cause it was just kind of being choked out by the single exhaust, and the puny intake. Now the intake is letting it breathe, the dual exhaust is really flowing well, sounds great by the way, for a V6, and the Bama tune's just really pulling it all together. Our acceleration, by the way, is killer. That Auburn LSD along with our 373s, have really made for one peppy daily driver. In the end, V6, much more improved driving experience. That's what we were going for with this Power Pack, and we really did a good job with our little 3.8 L here. So that wraps up our Power Pack for our V6 Mustang. Be sure to check out some of our other 99-04 V6 Bolt-On Build-ups, where we dress up our V6 a little bit, and work on our handling.

Increase In Performance. Bolting on a Pypes V6 True Dual Exhaust Kit to a stock 1998 to 2004 V6 will yield an increase of 15 to 25 more horsepower! This Pypes V6 True Dual Exhaust Kit includes both the off-road X-Pipe and Cat-Back needed to give your Mustang an impressive throaty V8 sound and increase in rear wheel horsepower.

Track-ready X-Pipe design. Pypes designed this system with an off road x-pipe to eliminate the power hogging catalytic converter from the horsepower and torque equation. For street use, consider installing the Pypes V6 True Dual Exhaust Catted Kit.

Quality Materials. Both the off-road X-Pipe and Cat-Back are constructed from mandrel bent 2.5" 409 Stainless Steel. The X-Pipe features welded reinforcement plates for additional strength and the Dual Cat-Back features Pypes Street-Pro 3-chamber mufflers for an aggressive throaty sound. With its 3" polished 304 Stainless Steel tips, this system not only sounds great, but it looks great too.

Application. The Pypes V6 True Dual Exhaust Kit is specifically designed to fit on any 1998 to 2004 3.8L or 3.9L V6 Mustang for more power and a more aggressive sound. Intended for off-road use. Does not include catalytic converters.

Technical Note: May require the use of O2 Sensor Extensions for proper installation. Some cutting to the flow tubes is required.

Fitment: Details


CA Residents: WARNING: Cancer and Reproductive Harm -

What's in the Box
Hardware included:
  • (1) X-pipe
  • (2) Street-Pro Mufflers
  • (2) Tailpipes
  • (2) Flow Tubes
  • (2) Flow Tube Flanges
  • (4) Clamps
  • (1) Bolt Kit
  • (1) Hanger Kit
  • (2) 3" Stainless Tips
  • (2) Tip Hangers
Installation Info
Tech Specs
Cat-Back Exhaust Specifications
Piping Material: 409 Stainless Steel Tip Material : Polished 304 Stainless Steel
Piping Size: 2.5" Tip Size: 3"
Muffler Type: Chambered Fitment: 1998-2004 V6 Mustangs
Will it fit my Mustang?

    Customer Photos (11) Submit Your Photo

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      Questions & Answers (21)

      5 Top Rated Questions

      will dual v8 work on my v6 whats the difference in a v6 dual and v8 dual my 04 3.9 v6 has headers will that help me put v8 duals on it and how will it sound

      • You could install this Pypes True Dual Exhaust and bolt it directly to your shorty headers (or stock manifolds). If you wanted to use a GT catback rather than this kit, you would need to purchase the adapter mid-pipe and then you could pick the GT catback of your choice. I've attached the adapter link below so you can take a look. Give our Experts a call if you have any other questions or would like any advice on which route to choose!

      Helpful (10) Show 1 more answer

      Cheese Burger or Rice Patty!? How would you best describe the sound from this exhaust? I live in Alaska where we don't have emissions laws so these are street legal. I'd like to get it but I want to know, Does this exhaust system in any way sound hallow or... "Rice'y" "tunnel'y" tin-can'y" I want to most effective exhaust for my V6 Mustang that stands out, is aggressive and not embarrassing to use as I probably wont replace it again for awhile since its about $1,000.00 to get it to Alaska. PLEASE HELP!..... THANK YOU, Kraig

      • Kraig, Me again. I read some of the reviews. From what hear that it sounds kinda ricey and that it doesn't quite fit. My suggestion would be to go with the Magnaflow Comp series. Their Straight through design NOT the rectangular muffler kind. Idk why, but the straight through sounds better. I have done so much research on exhaust because I am so particular on how I wanted my car to sound. So, Basanni is like a magnaflow but more like a 350z tone, flow master is G-- awful. I had it on mine and had to take it off. Corsa, I couldn't really find too much on it and AM doesn't sell it. Ford racing, heard it in person, sounds ricey. Magnaflow is above all. and im not saying that because I have it...well i am but its an un bias opinion. Ive heard alot of exhaust and magnaflow stuck out to me as the best sounding exhasut. (the straight through design that is). So mags with an off road X pipe would be the way to go. If your car cant fit a muffler after the axle. you can always cut the tips off, mid mount the muffler, and clamp/weld the tips back on after the axle. I say this because it sounds like there would be as much labor time getting everything on the pypes set up to fit as it would the one I recommend. Plus, you can find everything here on American Muscle. Hope this helps.

      Helpful (2) Show 1 more answer

      would this x-pipe hook up to the pacesetter long tube headers? i was wondering this as i want to get longtube headers along with an exhaust kit all at once istead of having to install part by part or waiting really?thanx

      • This true dual has a standard length mid-pipe and unfortunately, won't install properly in combination with Long Tube Headers. This exhaust kit is meant for shorty headers or stock manifolds. The long tube headers require a shorty length mid-pipe to compensate for the longer length header. Hope this helps!

      Helpful (1)

      will this fit a 1997 3.8 5 spd car

      • Yes, this exhaust kit is compatible with the 1997 V6 5 speed Mustang.

      Helpful (0)

      Does these eliminate the catalytic converters?

      • Thank you for your question! This exhaust kit will delete the catalytic converters.

      Helpful (0)
      Post Your Question
      10 More Questions
      Is there a way of modifying these so they pass emissions? For example, changing out the midpipe? 1 answer
      Would this fit a 1997 V6 Mustang? (Base) I’m in need of replacing the piece that hooks to the headers, (one side is old and broke and sounds terrible now) if this kit won’t do it all, what piece would I need and what would fit if replacing that one piece? (Prefer both sides I’m guessing it’s called an H pipe or X?) believe mine is all stock. Short headers. 1 answer
      Do you know if this kit is legal in California, or if i get it will it cause my car to fail smog checks? 1 answer
      Will this exhaust be legal in California? 1 answer
      Do I need 02 extension with this exhaust system for my 2002 v6? 1 answer
      What makes this exhaust system able to fail emission tests? Like is there any parts that would be missing to it that should be there? 1 answer
      Is this street legal? 1 answer
      Would this fit a 97 V6? 1 answer
      I have a 2003 3.8L engine and was wondering if this true dual exhaust system will bolt directly to my stock manifolds.And should I buy a separate hanger kit when I purchase this exhaust system?And I am a decent mechanic can I install them or should I take this project to a shop ? 1 answer
      Hello, i was wondering if these kits came pre-assembled or not. I was thinking about swapping the mufflers out for flowmaster super 44's. Do you think this would be possible? 1 answer

        Customer Reviews (39) Write a Review

        Overall Rating 4.3

        out of 5 stars

        Installation Time:Full Day

        Installation Cost:$100-$250

        • Loudness / Volume 4.636364 4.6
        • Exhaust Note 4.363636 4.4
        • Fit & Finish 4 4
        • Bang For Your Buck 4.363636 4.4

        • 4/5

          Installation Time: Afternoon

          December 26, 2018

          4 stars all around

          So pretty much just like other people that reviewed this exhaust system fitment was one of the issues I had. Me and my boy jacked my car up as high as we could get it and put it on 4 jack stands, honestly we still didn't have enough space to properly align the pipes. We were able to get the system fully installed on it but the right down pipe sat too low to the ground and started scrapping on certain bumps. So a couple days later I took the system up to the down pipe off and drove it to a shop. Man just having headers and a down pipe on my car is like the worst ever its so annoyingly loud. Just save the headache and take the system to get installed by a shop that has a real lift or if you know someone that has a good lift then use that.


          Year: 2001 Submodel: V6

          Helpful (2)

        • 4/5

          Installation Time: Afternoon

          October 05, 2018


          They sound great when properly aligned but let me tell you these baby's are low low low.


          Year: 2003 Submodel: V6

          Helpful (3)

        • 3/5

          September 24, 2018

          Doesn't line up right.

          The system sounds nice. I have an 04 and the only problem I have is that it sits low. You have to be careful going over bumps. The tail pipes don't like up correct either. Will check with a shop to see if they can do anything for that.


          Year: 2004 Submodel: V6

          Helpful (3)

        • 5/5

          Installation Time: Afternoon

          April 15, 2018

          Get what you pay for

          Easy set up. Great sound, especially when changing gears! Only thing I do not like, the mufflers hang a bit, but love the product and results!


          Year: 2000 Submodel: V6

          Helpful (4)

        • 4/5

          Installation Time: Shop Install

          Installation Cost: $100-$250

          February 23, 2018

          Great but a little to loud

          Overall it’s good and I recommend if you want an loud exhaust system. If I could I would buy the catted exhaust.


          Year: 2004 Submodel: V6

          Helpful (5)

        • 5/5

          Installation Time: Afternoon

          November 21, 2017

          Get yours NOW!!!

          Hands down the best price for the best sound you can get out of your V6! I love the look on peoples faces when i give it a little gas! Easiest exhaust fitment ever as well! Took me about an hour and a half with just simple ratchets and wrenches. loved rolling up to my car meet and seeing people just drool over how it sounds now. Would 11/10 recommend to ANYONE!


          Year: 2001 Submodel: V6

          Helpful (5)

        • 5/5

          Installation Time: Weekend

          October 23, 2017

          son says it sounds great

          This product is VERY hard to align correctly. It is def loud and growls at low rpm but gets really raspy at 3k rpm. I guess it's different considering my mustang is a 96 cobra and my son's is a v6. Overall good quality but just raspy.


          Year: 2002 Submodel: V6

          Helpful (5)

        • 5/5

          Installation Time: Shop Install

          Installation Cost: $250-$500

          June 17, 2017

          im in love with this exhaust

          This exhaust system is the real deal. instructions were just a color picture layout of the exhaust but that was all that was needed. everything slipped together very well and was packaged very professionally. came with all bolts hangers and absolutely everything needed to make this system a breeze. only hard part was getting the old rusted exhaust off. would definitely recommend to anyone


          Year: 1999 Submodel: V6

          Helpful (5)

        • 4/5

          Installation Time: Full Day

          February 05, 2014

          Worth It

          Had no problem installing these on my 98 mustang. Everything fit right and it sounds really good. Gives is that old muscle car sound and smell.


          Year: 1998 Submodel: V6

          Helpful (9)

        • 5/5

          Installation Time: Afternoon

          March 22, 2013

          I love this exhaust system

          I love the tone is has giving my mustang and the proformance is great it only took me a afternoon to put it on and it fits great


          Year: 2003 Submodel: V6 Keithville, LA, USA

          Helpful (7)

        • 5/5

          Installation Time: Full Day

          October 31, 2011

          Unbelievable Performance

          I bought this exhaust last month and had it installed...this catback exhaust is the bomb truly what it stands for A BEAST!! Sounds excellent when driving normally but when u step on the gas u definitely get the response and sound your looking for. With the off road x-pipes it is mad loud....u can hear my Stang coming from a distance....this exhaust is a must have u can't go wrong with this exhaust performance beneath your can feel the rumble beneath you and everyone stops and stares at you!! All I can say is get this combo and you won't be sorry...


          Year: 1998 Submodel: GT Tortola, British Virgin Islands (Caribbean)

          Helpful (9)

        • 5/5

          June 04, 2011

          Overall good

          What I liked about this product is the powergain automatically feel the extra hp. Very loud at 3000 rpms. Undecided what I'm going to do with them I might make mine turn downs after the mufflers- which brings me to my dislike about the product, the exhaust are great don't get me wrong just that they were cheaply made what I mean is for example when u look at the exhaust tips the drain holes are off way off, it was lime the manufacturer substandard the work one pipe come up more than the other. But overall good exhaust system. I might unbolt the rear pipes that go over the rear wheels and put turn down after the mufflers...

          Michael kreamer

          Year: 2000 Submodel: V6

          Helpful (7)

        • 5/5

          May 09, 2011

          Pypes True Dual

          driver side pipe between x to muffer had to cut 1' off to fit

          Jay Lafferty

          Year: 2004 Submodel: V6

          Helpful (5)

        • 5/5

          April 29, 2011

          loud as hell

          first off these pypes are loud as hell lol but love speeding pass people turning heads.good sounding pipes for a v6 not a big fan of the street pro mufflers, they Will b changed. tips dont tightn on the tail pipes good there loose make a rattling sound when you hit a bump. but if you want a v8 look for your v6 get this product


          Year: 1998 Submodel: V6

          Helpful (15)

        • 3/5

          February 09, 2011


          Overall its a decent exhaust. some of the piping wouldnt fit properly so i had to bend and use my own to make things fit. fairly easy install due to the lift im convenienced with. Althought the factory studs on the manifolds have to be swapped out. As far as the sound goes, id recommend different mufflers. The ones with the package give it a pissed off bumblebee noise after about 1500 rpm. I used the set up with a pair of flowmaster 40's and it sounds great for a 6. just be prepared for some difficulting in making sure things seal up and make absolutely sure you use the sleeves supplied for the down pipe off the headers. otherwise itll sound nasty.

          blake dudley

          Helpful (10)

        • 5/5

          November 26, 2010

          Pypes V6 Dual Exhaust Kit

          It was very easy to install. Everything lined up just like the original parts. MY only error was I did not order the correct product, The catylic converter pipes would not fit into the Pypes. They were to wide. I will have to modify the pipes when the yearly inspection becomes due. The Pypes look and sound great.

          Carlos Davis

          Helpful (5)

        • 4/5

          October 28, 2010


          Love the exhaust it sounds great when idling and up to about 3k once over that it gets this weird almost unique ricer SCREAM that def turns heads. added alot of power to my car especially with the SCT tuner on it, def a good combo i would advise both for any mustang owner


          Helpful (8)

        • 1/5

          June 05, 2010

          dont do it

          If your thinking about buying this exhaust... dont. nothing fits not even the tips. I had to add shims to the tips to get them to tighten down to the tail pipes. I had to bend the down pipes to get them to fit to the exhaust manifolds and even then with the inserts they give you they will not tighten up snug to the exhaust manifolds. Then once you finally think your done the left tip is off by a noticeable amount. So what are you actually getting? 600$ worth of parts that do not fit right and that do not even look good once your finished because of an awkward angle to one of the tail pipes. do your self a favor and keep your stock exhaust or go to a muffler shop.

          Justin Blackmon

          Helpful (19)

        • 3/5

          May 16, 2010


          exhaust is loud but if you own a 99 you will have to get diffrent flange gaskets in order to fit to manifolds, also my exhaust was not bent the right way so I had to rebend the mid pipes, great system for the price, little bit of innovation and work you can get a MEAN SOUND for a pretty good price also if your car is lowered more than 1.5" this exhaust is not flush with the bottom it sags a little so prepare to scrape a little if anyone has any questions feel free to email


          Year: 1999

          Helpful (9)

        • 2/5

          May 06, 2010


          Dont get me wrong its a great sounding exhaust but pypes is the worst company my company has ever come acrossed and show no quailty in the products. We installed one on a 2001 v6 and the flanges on the H-pipe was the wrong size and way off from stock flanges, they could not seal on the manifold even with the inserts they gave you. The left tail pipe was 20 degrees off of the right side and I have hurd of these problems from other pypes customers.Over all very cheaply made system and i will never never purchase a pypes product for myself or anyone I know.


          Year: 2001 Submodel: V6

          Helpful (44)

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