Name: Pypes Violator Cat-Back Exhaust (98-04 GT; 03-04 Mach 1)
Brand: Pypes
SKU: 20005
Price: 449.68 USD
Availability: InStock
Rating: 4.5 (65 reviews)

Pypes Violator Cat-Back Exhaust (98-04 GT; 03-04 Mach 1)

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65 Reviews 19 Answers

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Features, Videos & Details

Increases of 8 to 13 Horsepower
Aggressive Sound Profile
2.5" 409 Stainless Steel Tubing
3.5" Polished 304 Stainless Steel Tips
Fits 1998-2004 GT, Bullitt, & Mach 1 Mustangs

Product Resources

Customer Photos (13) Customer Reviews (65) Questions (14) & Answers (19)

Review & Installation Video

Hey I’m Justin with AmericanMuscle.com, and I’m taking a closer look at the Pypes violator series catback exhaust, fitting the 98-04 Mustang GT, Mach 1, and Bullitt. Pypes exhaust systems usually feature very aggressive tones and it’s the same with the violator kit shown here. The name comes from the two violator series mufflers that this entire kit is built around. They actually feature mini sound deflectors in place of the traditional baffles, which will really allow your 4.6 to be heard. As for the construction we’re looking at full 409 grade stainless throughout, including the 2.5” mandrel bent tubing, the violator mufflers, and those 3.5” OE style polished tips. We do have this exact same kit used on our 98 GT bolt on build up, in conjunction with Pypes’ off road X-pipe which they refer to as their beast setup, and let me just say I am a really big fan of this exhaust. As for the install you will need to cut your factory exhaust just to remove it entirely but after that the new Pypes system should install without modification in about 2 hours. Now let’s hear how the Pypes violator series catback sounds compared to our factory exhaust.

Increase In Performance. Bolting on a Pypes Violator Cat-Back system to a stock 1998 to 2004 GT will yield an instant 8 to 13 horsepower gain. It features two of Pypes Violator mufflers for the ultimate in flow and power gains with an aggressive rude sound.

Aggressive Sound. Pypes CatBack features the Violator "Rude Sound" muffler that uses an internal louvered tube with mini sound deflector chambers that result of a unique aggressive muscle car sound.

Quality Materials. This Pypes Cat-Back Exhaust is constructed from free flowing mandrel bent 2.5" 409 stainless steel tubing and features Pypes Violator chambered mufflers for an aggressive throaty sound. The whole system is finished off with a set of 3.5" Polished 304 stainless steel tips for classic Muscle Car styling.

Application. The Pypes Violator Cat-Back Exhaust kit is specifically designed to simply bolt-on to the existing stock H-Pipe of any 1998 to 2004 4.6L GT, Bullitt, or Mach 1 Mustang for more power and a more aggressive sound.

Fitment: 1998 1999 2000 2001 2002 2003 2004 Details

MPN# SFM27V

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

What's in the Box

Hardware included:

(4) 2.5" U clamps
(2) Muffler hangers
(2) Tailpipe hangers
Hardware kit (fastners, etc.)

Installation Info

Installation Time

(approx) 2 Hours

Difficulty Level:

Light to Moderate mechanical skill required.

Installation Guides

Tech Specs

Cat-Back Exhaust Specifications

Piping Material:	409 Stainless Steel	Tip Material :	Polished 304 Stainless Steel
Piping Size:	2.5"	Tip Size:	3.5"
Muffler Type:	Chambered	Fitment:	1998-2004 GT / Mach 1 / Bullitt Mustangs

Tech Guides:

Converting Mustang Dual Exhaust

Will it fit my Mustang?

Bullitt - 01
GT - 98, 99, 00, 01, 02, 03, 04
Mach 1 - 03, 04

Fits GT, Mach 1, and Bullitt

Questions & Answers (14)

5 Top Rated Questions

Is this legal in California? Will it pass smog?

Only headers and catalytic converters are affected by somg tests. If the exhaust you are looking at doesn't involve these pieces then you have nothing to worry about.

Helpful (2)

Is it compatible with a 01 v6

In order to use this Violator Catback (or any other GT catback) on your V6, you would have to install either the Pypes Catted or Off-road X-pipe designed for the V6 or use the V6 Dual Exhaust Adapter Kit. I've attached all (3) options below so you can take a look and decide which would be best for your application. One of these mid-pipes would then allow this or any other GT catback to bolt up without issue! Hope this helps!

Helpful (1)

ARE THE CATBACK SYSTEMS THE SAME FOR A CONVERTIBLE AND A COUPE WILL THEY FIT ON BOTH THE COUPE AND CONVERTIBLE

Correct, this system will work on either the coupe or the convertible.
Identical.

Helpful (1) Show 1 more answer

Can I install some Stock Catholic Converters on this and if so well it affect the strength of the noise and HP and well the smog check pass on California?

The Pypes Violator Cat-Back Exhaust is a cat back system which means it mounts behind the cats you already have.

Helpful (0)

Looking for an exhaust I can put on my my 2000 v6 with an o/r x pipe and was wondering how this compared to the pypes pipe bombs?

The Violator exhaust from Pypes actually has a slightly deeper exhaust tone when compared to the Pipe Bombs. Being you have an o/r mid-pipe already, I would recommend the Pipe Bombs which is more mild. With that being said, it really will depend on the exhaust sound you're looking to go with for your vehicle.

Helpful (0)

Not finding an answer? Ask your question! Post Your Question

9 More Questions

Do i really need the electronic pip cut kits I have a convertible 4.6L Mustang GT 2000 1 answer

The Pypes Violator Cat-Back Exhaust does not require cutouts. The Pypes Electric Exhaust Cutout Kit is used to allow the exhaust to exit before the mufflers for race applications.

Helpful (0)

I just ask a question able fitment for my 2003 GT Premium but I read it fits coupe and convertible so all I need to know is about the tips you say the Pypes catback come with 3-1/2 tips which is what I want with the SFM27V other places say 3 in just want to make sure before buying. 1 answer

The Pypes Violator Cat-Back Exhaust (98-04 GT, Mach 1) will come with a 3.5" tip and will fit both convertible and coupe models.

Helpful (0)

I want to give my 02 GT a more aggressive sound to it and this seems like it, but it is also my daily driver. I'm not much of a mechanic and I want to know will it cause my Check Engine light to come on? 1 answer

No, it will not.

Helpful (0)

I have a 2000 V6, what else do i need to purchase to be able to use this exhaust set up? 1 answer

To run a GT exhaust on your V6, you will have to purchase the PaceSetter Black Long Tube Headers Item #51056 along with the PaceSetter Offroad X-Pipe Item #51061. Then you will be able to install this GT exhaust for some awesome sound and performance just know that the long tube headers will only work with a manual transmission.

Helpful (0)

Do you have to purchase the off-road X-pipe in order to use this efficiently? I am planning on buying these for my 2000 GT convertible but was wondering if I have to buy the off-road X-pipe in order to get best results or if it will be fine either way? 2 answers

With the stock exchaust you have now, you will have HP gains. But if your looking for the most, then yes the off road X pipe will give you that extra you want.
No you do not have to have the xpipe works and sounds great with stock or aftermarket h or x pipe

Helpful (0) Show 1 more answer

will this work on my 04 v6 with the dual exhaust adapter? if i buy the dual exhaust adapter and then get the pypes violater catback system, will it work ? matt 1 answer

pypes makes the violator series specifically for V-6

Helpful (0)

What headers should I use with this exhaust? What headers ? 2 answers

This is totally independent of your headers. You can install that with stock, shorty or long tube headers because the cat back connects to your mid pipe.
I have the BBK chrome shortys on an off road H. Very happy.

Helpful (0) Show 1 more answer

Can this be installed in my driveway? Are they any problems with leaks? 2 answers

It is possible to physically install the exhaust in a driveway used proper jackstands and safety precautions. But to prevent leaks and get best results, I would highly recommend taking your stang to a professional welder to have the peices welded together once you have the exhuast installed and situated under the vehicle. Keep tabs on the weld work for about the first week to check for leaks or breaks, etc. If nothing is apparent after the first week of regualr use, you're usually good to go.
Yes you could with jacks but it would a whole lot easier on a lift. I would recommend you try to find a lift if you want to do it yourself

Helpful (0) Show 1 more answer

I already have a off road x-pipe would this beable to conect to it? 2 answers

Sure! You can just bolt it right up to your new x-pipe in place of your stock exhaust!
Absolutely, it will bolt up to it and fit perfectly.

Helpful (0) Show 1 more answer

Customer Reviews (65) Write a Review

Overall Rating

4.5

out of 5 stars

Installation Time:Afternoon

Installation Cost:$100-$250

Loudness / Volume 4.414634 4.4
Exhaust Note 4.390244 4.4
Fit & Finish 4.243902 4.2
Bang For Your Buck 4.487805 4.5

no one in the world ever gets what they want, and that is beautiful

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3/5
December 06, 2018

Pypes

Nice set of cat backs easy to install. There a little louder than I was wanting. All my friends love the sound. I installed them in 3 hours easy .

ChadT

Year: 2003 Submodel: GT

Helpful (3) Thanks for your input!
- Loudness (Volume) 5
  5
- Exhaust Note 4
  4
- Fit & Finish 4
  4
- Bang for your Buck 5
  5
5/5

Installation Time: Full Day

November 20, 2018

Great products

I had these installed at a shop, but one of the muffler tips was bent the shop claims they cam like that but i check them before bring them to the shop and they were not bent everything was perfect, either way the install went well and the stang grrrrrrrr like it should. i will be buying a replacement pipe. i will continue to purchase.

NoelC

Year: 2003 Submodel: GT

Helpful (2) Thanks for your input!
- Loudness (Volume) 5
  5
- Exhaust Note 5
  5
- Fit & Finish 4
  4
- Bang for your Buck 5
  5
5/5

Installation Time: Afternoon

November 13, 2018

Worth 5 smiles

I bought and installed my violators and absolutely love their sound. I have already bought my next Mustang and will definitely be buying some violators for it soon.

RobertR

Year: 1999 Submodel: GT

Helpful (3) Thanks for your input!
- Loudness (Volume) 5
  5
- Exhaust Note 5
  5
- Fit & Finish 5
  5
- Bang for your Buck 5
  5
5/5
August 13, 2018

Pypes

The sound is awesome and it has more get up. Good buy for the money. Had custom shop install

JosephG

Year: 2004 Submodel: GT

Helpful (4) Thanks for your input!
- Loudness (Volume) 5
  5
- Exhaust Note 5
  5
- Fit & Finish 5
  5
- Bang for your Buck 5
  5
5/5

Installation Time: Shop Install

Installation Cost: $100-$250

July 03, 2018

Love this Exhaust System

This system sounds great! It's noticeably louder than the stock exhaust on my 04 GT when running through the gears, but at higher cruising speeds, it's nice and quiet with no drone whatsoever. The stainless tips look great too! I had a shop install it, so I can't comment on the installation process.

ChrisK

Year: 2004 Submodel: GT

Helpful (5) Thanks for your input!
- Loudness (Volume) 5
  5
- Exhaust Note 5
  5
- Fit & Finish 5
  5
- Bang for your Buck 5
  5
5/5

Installation Time: Afternoon

May 06, 2018

Perfect

I had a very old flowmaster exhaust that I loved, for over 10 years till a very bad rock on a dirt road. This new exhaust changes the whole car. She was loud before but now she's nasty. I'm very happy with my purchase. Got here fast and with no damage I couldn't be happier

MichaelD

Year: 1999 Submodel: GT

Helpful (5) Thanks for your input!
- Loudness (Volume) 5
  5
- Exhaust Note 5
  5
- Fit & Finish 5
  5
- Bang for your Buck 5
  5
5/5

Installation Time: Less than 1 Hour

May 04, 2018

Pypes Violator

They installed perfectly. Quiet at idle and cruise. Loud when you need them to.

NicholasN

Year: 2004 Submodel: GT

Helpful (5) Thanks for your input!
- Loudness (Volume) 3
  3
- Exhaust Note 5
  5
- Fit & Finish 5
  5
- Bang for your Buck 5
  5
4/5

Installation Time: Afternoon

April 04, 2018

Pypes Exhaust

Overall very pleased with the system. There were some issues installing over the rear axle. I would recommend this system.

MarkW

Year: 2002 Submodel: GT

Helpful (5) Thanks for your input!
- Loudness (Volume) 4
  4
- Exhaust Note 5
  5
- Fit & Finish 4
  4
- Bang for your Buck 4
  4
5/5

Installation Time: Afternoon

November 01, 2017

Pypes

They are great easy to install. Adds a unique sound to the car.

DaisyM

Year: 2004 Submodel: GT

Helpful (6) Thanks for your input!
- Loudness (Volume) 5
  5
- Exhaust Note 5
  5
- Fit & Finish 4
  4
- Bang for your Buck 5
  5
5/5

Installation Time: Less than 1 Hour

September 29, 2017

Perfect

Not the loudest at idle and cruising speed but perfect when you open it up!

Darrell

Year: 2004 Submodel: GT

Helpful (5) Thanks for your input!
- Loudness (Volume) 5
  5
- Exhaust Note 5
  5
- Fit & Finish 5
  5
- Bang for your Buck 5
  5
3/5

Installation Time: Afternoon

September 21, 2017

Install time

Tail pipes were a bear to get over axle housing but once installed, I got a solid great sounding exhaust at a great price.

rlp094

Year: 2002 Submodel: GT

Helpful (6) Thanks for your input!
- Loudness (Volume) 5
  5
- Exhaust Note 5
  5
- Fit & Finish 4
  4
- Bang for your Buck 5
  5
5/5

Installation Time: Shop Install

September 16, 2017

Great Pypes! ;)

This system has a great sound. I love the side by side video clips for sound comparison on the website. It helped me to choose exactly the system I wanted. Got it cheap for Labor day sale and free shipping! I had a muffler shop install it for 2 hours labor.

Vegasbound16

Year: 2001 Submodel: GT

Helpful (7) Thanks for your input!
- Loudness (Volume) 5
  5
- Exhaust Note 4
  4
- Fit & Finish 5
  5
- Bang for your Buck 5
  5
5/5
August 13, 2017

Wild n Free

Took the guys about three hours to cut away my stock gt pipes and install the xpipes and catback system from Pypes. Absolutely great sound, more hp and a happy woman. Love them! Thanks AM.

Wackytoo

Year: 2003 Submodel: GT

Helpful (6) Thanks for your input!
- Loudness (Volume) 5
  5
- Exhaust Note 5
  5
- Fit & Finish 5
  5
- Bang for your Buck 5
  5
5/5

Installation Time: Afternoon

July 13, 2017

Great sound and price!

I'm very happy with this product. I didn't have to spend a ton of money and still got that deep aggressive sound when I am on the gas. It's as quiet as stock at idle and not bad at highway. Only problem was they sent me the wrong sized exhaust tip but when I called they sent me a new one of my choice at no charge! Even called to let me know when it was coming. I would highly recommend!

Spencer

Year: 2004 Submodel: GT

Helpful (5) Thanks for your input!
- Loudness (Volume) 4
  4
- Exhaust Note 4
  4
- Fit & Finish 5
  5
- Bang for your Buck 5
  5
5/5

Installation Time: Afternoon

July 02, 2017

Worth the money.

Good bang for the buck. No highway drone but good sound when you put your foot into it and good performance. Very happy with this product.

Riley2000mustang

Year: 2000 Submodel: GT

Helpful (5) Thanks for your input!
- Loudness (Volume) 4
  4
- Exhaust Note 4
  4
- Fit & Finish 4
  4
- Bang for your Buck 5
  5
1/5

Installation Time: Afternoon

June 09, 2017

Dont get it

royal pain in the A** all around, spend the extra money and get a loudmouth

Mark

Year: 2004 Submodel: GT

Helpful (5) Thanks for your input!
- Loudness (Volume) 4
  4
- Exhaust Note 2
  2
- Fit & Finish 1
  1
- Bang for your Buck 2
  2
5/5

Installation Time: Weekend

March 03, 2017

Sweeet

Had flowmaster American thunder was way too quiet and droney, my state laws wont allow an off road h pipe so i opted for something louder, to my surprise these were similiar to the slp loudmouth, from videos i have seen , meaning they scream with aggression and a bit of rasp, i love it very bawlsy sounding. A great system , just one rev alone is like heaven for a muscle car enthusiast, not sure why these aren't as popular as other catbacks seriously underrated. buy it!!

StevenS

Year: 2002 Submodel: GT

Helpful (5) Thanks for your input!
- Loudness (Volume) 5
  5
- Exhaust Note 5
  5
- Fit & Finish 5
  5
- Bang for your Buck 5
  5
3/5

Installation Time: Shop Install

February 10, 2017

Not bad for the money

Too much tweaking to make it fit correctly. Quality is pretty good. Throw the directions in the garbage.

BK

Year: 2001 Submodel: GT

Helpful (6) Thanks for your input!
- Loudness (Volume) 5
  5
- Exhaust Note 5
  5
- Fit & Finish 5
  5
- Bang for your Buck 5
  5
5/5

Installation Time: Afternoon

January 10, 2017

Great sound!

Love this setup! Loud when you jump on the gas and quiet at idle. Also no highway drone which is awesome! Definitely gives the car a different sound than the typical flowmaster mustang sound.

Nelmsy

Year: 1998 Submodel: GT

Helpful (6) Thanks for your input!
- Loudness (Volume) 4
  4
- Exhaust Note 5
  5
- Fit & Finish 4
  4
- Bang for your Buck 5
  5
5/5

Installation Time: Afternoon

June 29, 2016

Not to Loud

I just put this on my 04 GT with the stock H pipe it is a little bit louder than stock but not much it is just what I wanted. I did it myself on a hoist but it would have been easier with help holding parts in place and getting everything lined up.

Randy

Year: 2004 Submodel: GT

Helpful (6) Thanks for your input!
- Loudness (Volume) 5
  5
- Exhaust Note 5
  5
- Fit & Finish 5
  5
- Bang for your Buck 5
  5

Pypes Violator Cat-Back Exhaust (98-04 GT; 03-04 Mach 1)

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