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Pypes Off-Road H-Pipe (99-04 GT)

21 Reviews
Our Price

$205.99

  • Item #20131
  • MPN# HFM16

  • Market Price $224.99
  • You Save 8% ($19.00)
In Stock Ships same business day.
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Customer Photos
Features
  • Improves exhaust flow for more power
  • Classic muscle car rumble
  • Pypes modular construction
  • For off-road, track use
  • 2.5" 409 stainless steel tubing
  • Fits 1999-2004 GT Mustangs
Description
Improves Flow For More Power. Add even more horsepower and torque to your 4.6L GT Mustang by eliminating those power robbing factory catalytic converters with a brand new Pypes Off Road H-Pipe. The Pypes off-road H-pipe will significantly improve your Mustang's exhaust flow for a notable increase in horsepower and torque.

Muscle Car Rumble. This free flowing Pypes h-pipe for the GT Mustang will not only increases power, but it also adds a deep muscle car rumble to the sound of your exhaust with its classic "H" crossover pipe design.

Modular Construction. Pypes unique three piece modular construction makes it quick and easy to add or remove catalytic converters to your exhaust system in just minutes, depending on your driving needs.

Durable Stainless Steel Construction. Pypes uses sturdy 16 gauge 409 stainless steel mandrel bent 2.5" tubing for improved exhaust flow and features welded reinforcement plates for additional strength.

Application. This Pypes Off-Road H-pipe is designed to be a direct bolt-on for the 1999 to 2004 4.6L GT Mustangs with either aftermarket short tube headers or the stock factory manifolds and a dual catback exhaust installed. Intended for off-road, track use only, does not include catalytic converters.

Mustang Fitment: 1999 2000 2001 2002 2003 2004 Details

What's in the Box
  • (1) Two-piece H-pipe
  • (2) Down Pipes
  • (2) Clamps
Installation Info
Tech Specs
Mid Pipe Specifications
Style Mid Pipe: Standard length "H" Type Headers Required: Shorty or Stock Manifolds
Piping Material: 409 Stainless Steel Piping Size: 2.5"
Catalytic Converter: "No" - For off-road use only Fitment: 1999-2004 GT Mustangs
Will it fit my Mustang?
  • GT - 99, 00, 01, 02, 03, 04

Fits GT Only

Most Helpful Reviews Read All Reviews

Overall Rating 4.9/5 Write a Review
5/5
Imports will fear the thunder!

I installed this bad boy in about an hour... Then started it up... I think the world may have stopped during that initial start, the. Heavens may have sang, and the ocean roared to match the note that

Read More
Helpful (12) (0)

5/5
Pypes Off-Road H Pipe

So i replaced my stock exhaust with the Pypes O/R H Pipe with Violator Mufflers and i have never heard another mustang with this sound, it tops all my friends stangs with flowmaster 10 and 40 series and

Read More
Helpful (3) (0)

Customer Photos (7) View All Customer Photos

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Q & A (11 Questions, 11 Answers) Ask a Question

Can you still reuse your O2 sensors on this midpipe?

warewolf39 Year: 2000 Model: GT

Question Resolved
Good Question (1) (0)
  • You should definitely be able to reuse your factory 02 sensors with this midpipe. However, because the cat's are gone you will need to purchase a set of mil eliminators to go in line with the rear O2 sensors in order to avoid the check engine light.

    Helpful (3) (0)

    Best Answer

    Luckstone Year: 2001 Model: GT

    Top 1000 Contributor

Show 4 more answers

How is the sound? I'm thinking of buying this h-pipe but I can't decide. I want a loud exhaust note but I don't want it to be raspy. I think the x-pipe would make my flowmaster 10 series too raspy, would the h-pipe be better? Thanks!

chevyeater Year: 2000 Model: GT

Question Resolved
Good Question (3) (0)
  • The h-pipes are known to give off a deeper, more classic muscle car sound while x-pipes tend to give off a raspy, more exotic high pitched note. If you want a loud and deep exhaust note, go with the off road h-pipe...you won't be disappointed. It will definitely be a better match to your flowmaster 10's.

    Helpful (2) (0)

    Best Answer

    Brian89 Year: 2003 Model: V6

    Top 1000 Contributor

Show 4 more answers

Do you need a catback? I have a 1999 Mustang GT convertible and I enjoy the sounding of the H pipe. I was wondering if you need a catback exhaust installed. The only thing I have done to my exhaust was install Flowmaster 40 series mufflers.

FierceJesus Year: 1999 Model: GT

Question Resolved
Good Question (0) (0)
  • This H pipe will fit any exhaust as its the same size as the factory one it replaces.Those Flomasters combined with this will sound awesome.

    Helpful (0) (0)

    motorcitysaleen Year: 2000 Model: Other

Reviews (21) Write a Review

  • 5 Stars .86 86%
  • 4 Stars .14 14%
  • 3 Stars 0 0%
  • 2 Stars 0 0%
  • 1 Stars 0 0%
4.9

out of 5 stars

20 Customers Recommend this Product

Installation Time:Afternoon

Installation Cost:0-$100

  • Loudness / Volume: 4.571429 4.6/5
  • Exhaust Note: 4.809524 4.8/5
  • Fit & Finish: 4.666667 4.7/5
  • Bang For Your Buck: 4.952381 5.0/5
Filter By Sort By
  • 5/5 Yes, I recommend this product

    April 19, 2013

    Imports will fear the thunder!

    I installed this bad boy in about an hour... Then started it up... I think the world may have stopped during that initial start, the. Heavens may have sang, and the ocean roared to match the note that emanated from the 4.6L ford engine. Zeus came down from his throne, just to shake my hand. What a great price for a great buy, thanks AM!

    calandr

    Year: 2002 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Florida, USA

    Helpful (12) (0)

  • 5/5 Yes, I recommend this product

    March 22, 2013

    Pypes Off-Road H Pipe

    So i replaced my stock exhaust with the Pypes O/R H Pipe with Violator Mufflers and i have never heard another mustang with this sound, it tops all my friends stangs with flowmaster 10 and 40 series and there x pipes. The throaty rumble this exhaust puts out has earned itself a perfect 5 star, although it does have a quiet idle once you step on the gas its no longer quiet i recommend this exhaust to everyone who likes the old muscle car rumble, thanks AM for an amazing investment

    Lodies08

    Year: 2002 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Boston, MA, USA

    Helpful (3) (0)

  • 4/5 Yes, I recommend this product

    March 02, 2013

    Great sound, few snags in the install

    The finished product sounds amazing, nice deep rumble. The difference from the stock pipes to these is night and day. The reason it took me all day to install is because one of the O2 sensor holes on the pipes had not been threaded. It caused a massive headache for me and my friend, had to find a muffle shop that was open and able to fix the problem. Kind of shows badly on quality control for Pypes but still sounds amazing.

    KeithB

    Year: 2004 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Owasso, OK, USA

    Helpful (3) (0)

  • 5/5 Yes, I recommend this product

    June 27, 2014

    Get em!!!

    This off road h-pipe has been the best thing to happen to my mustang it's so loud that I'm scared to put a catback on it...no wonder this thing stays sold out it lives up to the hype!!

    Stangangjermaine

    Year: 2000 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Houston, TX, USA

    Helpful (2) (0)

  • 5/5 Yes, I recommend this product

    March 22, 2013

    True Muscle Sound

    Awesome product !!!!! I had this installed in less then an hour and it sounds insane combined with my 2000 Saleens Borla exhaust.This is what a Mustang should sound like.Very Happy.AM is the place to buy from.

    motorcitysaleen

    Year: 2000 Model: Other Driving Style: Daily Driver 'Stangs I have owned: 5+ Warren Michigan

    Helpful (2) (0)

  • 5/5 Yes, I recommend this product

    December 22, 2012

    pypes off road h pipe

    This sounds amazing, really deep muscle car sound. So easy to install.

    atrussell1291

    Year: 2000 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Athens, OH 45701, USA

    Helpful (2) (0)

  • 5/5

    February 16, 2013

    Another Awesome Product from American Muscle

    These Pypes sound sick, deep muscle car tone. .... Very satisfied with what I bought. American Muscle had fast shipping and they also offered a Military Discount.

    Wetsu271

    Year: 2004 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1

    Helpful (1) (0)

  • 5/5 Yes, I recommend this product

    March 22, 2013

    That perfect exhaust note !

    This exhaust is exactly what you want. The x pipe is to raspy and annoying but this h pipe gives you the perfect note. Nice deep rumble with no raspy high end noise. I would recomend this exhasut to anyone looking to free up some extra HP ! I did feel a mid range gain with this mid pipe.

    vortechfedgt

    Year: 2003 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 10+ missouri

    Helpful (1) (1)

  • 4/5 Yes, I recommend this product

    November 08, 2012

    Awesome!

    Nice sound. Great fit. Easy to install. I liked it so much I got my buddy to buy the same one. He loves it just as much as I do.

    Zman26

    Year: 2000 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Mi

    Helpful (1) (1)

  • 5/5 Yes, I recommend this product

    January 28, 2014

    Pypes O/R H-pipe

    I bought this for my 2004 GT with flowmaster 40s already on the car. I absolutely love the sound. I used to have a 2007 GT with the pypes o/r X and also flow 40s. That sounded good as well but now having the H I have to say it is my favorite. It gives off a more distinct low muscle growl vs. the exotic more high pitch sound the X produces. I had a shop install because when I went to do it I rounded off one of the nuts at the manifold. The install ended up costing 180 and was done in about 2 hours or less. The only compliant I have is if you have a 2004 you HAVE you buy O2 extensions. Nowhere I could see on here did it say you needed them and didn't know until I got the pipe. Cheapest I could find was on here for 30 bucks. All in all a great product. Eventually I will upgrade to the Borla ATAK cat-back. But that's another story. If you are on the fence...don't be. Buy now and enjoy the sounds a mustang should make.

    WTP21

    Year: 2004 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Charleston, SC, USA

    Helpful (0) (1)

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