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Pypes Violator Catback Exhaust (98-04 GT, Mach 1)

45 Reviews
Our Price


  • Item #20005
  • MPN# SFM27V

  • Market Price $466.99
  • You Save 10% ($47.00)
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Product Videos Customer Photos
  • 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
Increase In Performance. Bolting on a Pypes Violator Catback 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 Catback 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 Catback 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

What's in the Box
Hardware included:
  • (4) 2.5" U clamps
  • (2) Muffler hangers
  • (2) Tailpipe hangers
  • Hardware kit (fastners, etc.)
Installation Info
Tech Specs
Catback 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

Will it fit my Mustang?
  • Bullitt - 01
  • Mach 1 - 03, 04
  • GT - 98, 99, 00, 01, 02, 03, 04

Fits GT, Mach 1, and Bullitt

Most Helpful Reviews


I just put theese on my 03 gt and they are awesome. they fit perfectly and sound great. i did them myself with my cousin (neither of us are professionals) and it was so easyyyy. the only part that was ...

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Helpful (12)

Pretty Good

I Ordered This Catback Bout A Week Ago...Sounds Great But Only Prob Was That Its Not Bent Right For An 04..The Right Side Pipe Hits Axel And Breather On The Bend Over The Axel...Had It Pro Installed Other ...

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Helpful (6)

Read All 45 Reviews
Overall Rating 4.6 out of 5 stars

Hey I’m Justin with, 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 View Full Transcript

Customer Photos (13) View All Photos

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11 Questions / 4 Answers

Ask a Question

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

TwWRIGHT Year: 1998 Model: GT

  • Sure! You can just bolt it right up to your new x-pipe in place of your stock exhaust!

    LisaS Year: 1992 Model: GT

    Good Answer (0) (0)

Show 1 more answer Question Resolved

Is it compatible with a 01 v6

Francisco Year: 2001 Model: 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!

    LisaS Year: 1992 Model: GT

    Good Answer (1) (0)

Question Resolved

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

minihorse95 Year: 2003 Model: V6

  • pypes makes the violator series specifically for V-6

    03GTUSN Year: 2003 Model: GT

    Good Answer (0) (0)

Answer This Question I need this answered (0) (0)

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Customer Reviews (45) Write a Review

Overall Rating 4.6

out of 5 stars

Installation Time:Afternoon

Installation Cost:$100-$250

  • Loudness / Volume 4.190476 4.2
  • Exhaust Note 4.142857 4.1
  • Fit & Finish 4.047619 4.0
  • Bang For Your Buck 4.190476 4.2

  • 5/5

    November 18, 2009


    I just put theese on my 03 gt and they are awesome. they fit perfectly and sound great. i did them myself with my cousin (neither of us are professionals) and it was so easyyyy. the only part that was a little tough was getting the old exhaust out since mine was kinda rusty. thanks AM it arrived next day and sounds beautiful.


    Year: 2003 Model: GT

    Helpful (12) (1)

  • 4/5

    June 01, 2010

    Pretty Good

    I Ordered This Catback Bout A Week Ago...Sounds Great But Only Prob Was That Its Not Bent Right For An 04..The Right Side Pipe Hits Axel And Breather On The Bend Over The Axel...Had It Pro Installed Other Than That Sounds Great ! And AM Had It To My Door In No Time Thanks AM!!!

    Jeffery P

    Year: 2004

    Helpful (6) (0)

  • 5/5

    October 24, 2007

    let the neighborhood know your coming

    I recently installed the Pypes violator dual exhaust kit with the off-road x-pipe on my 03 v6 Mustang. This exhaust adds enough horsepower to throw you back in your seat and is throaty enough to wake the neighbors. If your considering an aftermarket exhaust, this is the one and is offered at the best price here at American Muscle. Thanks American Muscle for providing such a great product and speedy service.


    Year: 2003 Model: V6

    Helpful (10) (5)

  • 4/5

    Installation Time: Afternoon

    January 18, 2014

    Nice Sound

    Installed on my 98 GT with BBK shorty headers and BBK off road H. Sounds good, def on the loud side. The hangers on the tips ARE NOT correct for the 98. We had to make our own hangers. Other than that, happy with the exhaust so far. Been on for 7 days now.


    Year: 1998 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1

    Helpful (2) (0)

  • 3/5

    Installation Time: Afternoon

    February 07, 2013

    pypes violator

    had a flowmaster before was on for 10 years plus really nice sound could not remember the model # had a muffler go bad just enough rust wanted to replace it all so i read up on this model with a "rude sound " its ok alot less quiet throaty than before sitting at idle barely here it running to me it is not to much louder than factory exhaust does not sound bad when on the gas better than factory but over all would say it is ok not sure if i am going to replace it or not its not horrible but was not what i was expecting to hear from it if going from factory or a fairly quiet exhaust to this one would be ok


    Year: 2000 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 3 Defiance, OH 43512, USA

    Helpful (2) (0)

  • 5/5

    March 06, 2010

    I love pypes

    I have a 2003 mustang gt with K&N intake, roush 75mm TB, mac O/R h pipe, diablosport predator tuner and the PYPES violator cat back kit w/ the 3.5" tips. the most noticable performance improvement was the cat back not to mention the sound!!!! yes it is extremely loud when you uput your foot in the floor but when you are just cuizing through town it is no louder than stock it is very nice sounding, here is a link to my video on youtube

    Anthony Brubaker

    Year: 2003 Model: GT

    Helpful (4) (2)

  • 5/5

    November 22, 2008

    Loud at Take Off

    I purchased these pipes in November and had them professionally installed. Good thing I did b/c it took over 5 hours for 2 mechanics to do the job. It doesnt sound that great at idle, but once you get on the gas the sound is strong. Dont attempt to install yourself!!!

    Steve K.

    Helpful (3) (2)

  • 3/5

    Installation Time: Less than 1 Hour

    January 18, 2014

    Nice sound

    Okay well the only BAD thing I ran in to was at the end, the passenger side pipe that goes over the rear axle was incorrectly bent. So it hangs dramatically lower then the driver side. So Lowe it scraps on speed bumps, but at the end of the day it works out let me tell you why. With those pipes that go over the axle you don't get the 100% raspy sound you paid for. Soo I took the pipes off and just left the mufflers and I think it sounds perfect. Soo FYI PRE-bent parts might not always fit you're car. 7 out of 10


    Year: 1998 Model: GT Driving Style: Race 'Stangs I have owned: 1 Kansas, USA

    Helpful (1) (1)

  • 5/5

    Installation Time: Afternoon

    May 10, 2013

    Pypes Violater Cat Back Exhaust

    Everything went well and the fit was perfect. My only problem was getting the pipes to get over the rear axles. I removed the shocks from the bottom and then all went in easy. The directions said to remove the rear wheels for easier installation, but I only removed the passangers side wheel, on the drivers side I didn;t, just the shocks. Unscrewing the nuts at the bottom of the shocks allowed the rear axel to drop enough to get the pipes over it.


    Year: 2002 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Fredonia NY USA

    Helpful (1) (1)

  • 5/5

    January 23, 2008


    This exhaust with the Pypes off- road x-pipe sounds so good.


    Helpful (1) (1)

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