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Bassani Cat-Back Exhaust (99-04 GT, Mach 1)

21 Reviews
Our Price


  • Item #31106
  • MPN# 46995S

  • Market Price $824.99
  • You Save 9% ($75.00)
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Customer Photos
  • Aggressive Exhaust Sound.
  • Performance Mufflers & Stainless Tips.
  • Durable Stainless Steel.
  • Lifetime Warranty.
  • Fits 99-04 GT, 01 Bullitt 03-04 Mach 1 Mustangs.
Aggressive Exhaust Note. Bassani's Cat-Back exhaust system with it's chambered performance mufflers will give your 1999-2004 GT or Mach 1 Mustang a more aggressive exhaust note, than that of the stock GT.

Looks and Performance. This Cat Back exhaust from Bassani features 4X8 performance mufflers that end with a 3.5" rolled edge slash cut polished stainless tip that exit in the stock location for great looks and an increase in power.

Lifetime Warranty. The Bassani Cat-Back is precision-engineered from resilient stainless steel for long lasting durability and is backed by Bassani's Lifetime Warranty.

Fitment. This Axle-Back exhaust system will fit the 1999-2004 GT and the 2003-2004 Mach 1 Mustangs for great looks and great sound.

Fitment: 1999 2000 2001 2002 2003 2004 Details

What's in the Box
  • (2) Muffler assemblies/li>
  • (2) Over axle pipes
  • (2) Exhaust Tips
  • (4) Clamps
  • (4) Bolts
  • (4) Washers
  • (4) Nuts
Installation Info
Tech Specs
Cat-Back Exhaust Specifications
Piping Material: Stainless Steel Tip Material : Polished Stainless Steel
Piping Size: 2.5" Tip Size: 3.5"
Muffler Type: Chambered Fitment: 99-04 GT / Mach 1 / Bullitt Mustangs
Will it fit my Mustang?
  • Bullitt - 01
  • Mach 1 - 03, 04
  • GT - 99, 00, 01, 02, 03, 04

Fits GT, Mach 1, and Bullitt

Most Helpful Reviews

The best out there

I've had a few bassani products in the past. They make a great quality product with a deep and aggressive sound to back it up. Also made a great power upgrade to my 2003 gt. It's worth the extra money. ...

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Helpful (1)

Great tone with no drone, just tuned

I spent a long time looking for the right catback for my daily driver and narrowed it down to this and the stingers. Don't get me wrong all of the exhaust companies are unique but this catback is the least ...

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Helpful (1)

Overall Rating 4.9 out of 5 stars
Read All 21 Reviews

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3 Questions / 5 Answers

Ask a Question

will this exhaust system increase hp and gas mileage I want to increase hp and would like to know the best way to accomplish this. I was considering a chip but don't know if they really work Thanks for your reply


  • up to 5HP gas mileage prob not because it will be louder and you will drive faster because it sounds cool causing you to burn more gas


    Good Answer (4) (0)

Show 2 more answers Question Resolved

Will this fit well with BBK long tube headers and a BBK offroad X pipe?


  • Yes No problem. They replace the cat back you have now. Sound is awesome!!!!!!


    Good Answer (0) (0)

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

Can I use this along with a x-pipe on my v6? Can this fatback exhaust work with a X-pipe designed for a v6? Will there be any problems with the height of the tips under the rear bumper? I don't want to be cheap when I upgrade my exhaust. I also plan on changing into new shorty headers as well.


Answer This Question I need this answered (1) (0)

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Customer Reviews (21) Write a Review

Overall Rating 4.9

out of 5 stars

Installation Time:Afternoon

  • Loudness / Volume 4.25 4.3
  • Exhaust Note 4.916667 4.9
  • Fit & Finish 4.666667 4.7
  • Bang For Your Buck 4.5 4.5

  • 5/5

    Installation Time: Afternoon

    December 15, 2015

    The best out there

    I've had a few bassani products in the past. They make a great quality product with a deep and aggressive sound to back it up. Also made a great power upgrade to my 2003 gt. It's worth the extra money. Bassani all the way!


    Year: 2003 Submodel: GT Marshfield,Wi

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    August 31, 2015

    Great tone with no drone, just tuned

    I spent a long time looking for the right catback for my daily driver and narrowed it down to this and the stingers. Don't get me wrong all of the exhaust companies are unique but this catback is the least that I have heard and I really just wanted to be different and not eventually get annoyed. Installed over a week ago and about 500 miles later and I still love it. At this point on I only want basset exhaust products. Thank bassani for their work and thank AM for being able to provide such a great product on the east coast


    Year: 2004 Submodel: GT NJ

    Helpful (1) (0)

  • 5/5

    February 20, 2009

    Best Catback I have Owned

    I have owned the SLP Loudmouth One catback with an o/r x pipe and it was just way to obnoxious. Then I switched to Flowmaster 40 series and they were nice but a tad bit quiet for me. I purchased and installed Bassani this week and the sound and quality is awesome. Love the tips and the polished stainless mufflers. Awesome Product


    Helpful (11) (0)

  • 5/5

    March 01, 2011

    awesome exhaust

    I have to say, i have owned the Bassani catback with the catted X pipe for about a year now and it sounds bad ass. I am adding the shorty BBK ceramic headers this week, that should make it sound even better. The Bassani exhaust is a little more expensive than the other ones but well worth the money. If you want your car to sound right... get Bassani

    benry placek

    Year: 2003 Submodel: GT

    Helpful (3) (0)

  • 5/5

    December 30, 2009

    Sound Of Freedom

    Incredible system on my 03 GT Stang. Sound is music to my ears when on the throttle. Awesome tone with a hint of pleasant drone. Only gonna sound better as I build the car for more horses. I think it's time to order the Bassani catted X-pipe. Quality Is Number 1!


    Year: 2003 Submodel: GT

    Helpful (5) (2)

  • 5/5

    August 05, 2010

    Move over Magnaflow

    Ive had both magnaflow and now this and let me tell you If you want your mustang to sound like a stampede you really have to buy this exhaust system not only do you feel the gain in horse power right away ,but you get goose bumps just from the loud bark when you hit that pedal and take off !

    Mike M

    Helpful (3) (1)

  • 4/5

    Installation Time: Less than 1 Hour

    October 24, 2013

    Great Product

    I installed this catback at the same time I did the Kooks header and x pipe install. I had to ding my set up that I got for a couple of reasons. I know Bassani is a quality brand and everything looked good upon opening the box for the first time. Not a big issue getting this lined up, but working on a garage floor, on your back doesn't help. My main issue is that the clamps did not secure the pipes where they connected. We'd get them lined up, slide them in, tighten the clamps, and it would move. A lot. Even the mufflers we couldn't get straight and I had a couple of days of scraping going over some unavoidable bumps. And the tips wouldn't stay in place either. I took it to a shop here that specialize in exhaust systems and even he couldn't get the system to stay tight. He had to make a couple of small welds to keep everything sturdy and together. The exhaust was initially quiet and I had the "silencers" removed and it was noticeably louder. Even with the long tubes and x pipe it's not raspy or extremely loud. I hoped for louder, but I am pleased with the overall sound.


    Year: 2002 Submodel: GT Newmarket, Suffolk CB8, UK

    Helpful (1) (0)

  • 5/5

    January 12, 2009

    great mach 1 exhaust

    awesome exhaust. a lil more expensive than the others but well worth it as no comparison for first since these are finely engineered and not just some pieces of metal put together. not very loud at first but once you take off the silencers it comes with, WOW!!!!makes it come alive.


    Helpful (1) (0)

  • 5/5

    August 02, 2010


    with out a doubt THE BEST sounding and performing exhaust made today.


    Helpful (2) (2)

  • 5/5

    Installation Time: Afternoon

    February 04, 2013

    Very impressed!!

    I researched many different exhaust companies when choosing my catback. I wanted a catback that was stainless steel, aggressive sounding without being obnaxious. This Bassani catback is the perfect blend of a straight thru design, with a chambered muffler style sound. I have been a flowmaster user in the past, but now will never go back! Bassani A++


    Year: 2003 Submodel: Mach 1 Crockett, CA, USA

    Helpful (0) (1)

  • 5/5

    Installation Time: Less than 1 Hour

    July 08, 2012

    Words cannot describe how amazing this sounds

    This catback is simply the best sounding catback for the 2valve mustang. PERIOD no arguement. with a stock mid pipe it sounded very nice yet quiet under normal driving conditions. with a o/r x pipe its simply amazing.Im a flowmaster kind of guy but this is a awesome product. Anyone looking for a catback exhaust please do you self a favor and dont let the price alarm you. its worth every penny.(luckly I was fortunate enough to have purchased the car with it already installed but I wanted to express my opinion about this.)


    Year: 2003 Submodel: GT maryland

    Helpful (0) (1)

  • 5/5

    Installation Time: Afternoon

    January 28, 2012

    Great buy

    Little more expensive but definitely worth it. Looks beautiful and sounds perfect!


    Year: 2001 Submodel: Bullitt

    Helpful (0) (1)

  • 5/5

    April 17, 2010

    the beast from hell

    i just threw on this xhaust system , immediately you hear hear the difference and you feel an increase in horsepower , i just gained bout 20 horse power with switching out my stock system deep rumble exhaust with very little to no drone , highly recommended , intimidating 3.5 inch tips, i would take out the stock baffles for increase in sounds .


    Helpful (5) (6)

  • 5/5

    Installation Time: Afternoon

    June 22, 2016

    Best Exhaust

    WOW I've heard flowmaster and magnaflow on mustangs but bassani beats then all not too loud and not to quiet when your going you hear that exhaust you feel more top end on your car


    Year: 2002 Submodel: GT

    Helpful (0) (0)

  • 5/5

    Installation Time: Full Day

    June 12, 2014

    utter SWEETNESS

    I'm so happy I bought Bassani!! I absoutley love them!!! They sound so nice! Still have to burn them out but I'm going to be putting headers on so it will sound so sweet! Installation was a pain but well worth it!!


    Year: 2003 Submodel: GT Minnesota

    Helpful (0) (0)

  • 4/5

    Installation Time: Full Day

    September 04, 2013

    Smooth sounding exhaust...

    Great exhaust. I love the exhaust note, it is very smooth, no rattle. Really nice product, I found the install was pretty easy, even by myself in the garage with a pair of floor jacks. It did take me a while to do the full install, but I found removing the old exhaust on my '02 with 220 000 kms was the most time consuming. Install wasn't too bad, it just took me a few attempts to get the alignment of the mufflers and tips just right. I would definitely buy this product again and recommend it to anyone who wants a smooth "neighborhood friendly" exhaust, it sounds great in 2nd gear around 2000-3000 rpm with the top down!


    Year: 2002 Submodel: GT Pain Court, Ontario, Canada

    Helpful (0) (0)

  • 5/5

    Installation Time: Afternoon

    May 01, 2013


    Awesome exhaust note!!! First mod that i did, and I got a lot of compliments!! My dad went out and got it for his 03 right afterwards! Highly recommend. Louder than stock, but not obnoxious. I cannot say enough about the exhaust note, really sounds great!


    Year: 1994 Submodel: Cobra

    Helpful (0) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    October 14, 2012




    Year: 2003 Submodel: Mach 1 Senatobia, MS, USA

    Helpful (0) (0)

  • 5/5

    Installation Time: Afternoon

    June 19, 2012

    Bassani is quality

    Bassani does make some quality pieces. You definately pay, but they're made in the USA. Good note. Good fit and finish.


    Year: 2003 Submodel: Cobra Ohio

    Helpful (0) (0)

  • 5/5

    August 31, 2009

    o yeah

    A friend of mine had these on his 03 GT, hands down the best sounding cat-back i have ever heard and i have heard all of them if you want the extra sound this is the one.


    Year: 2003 Submodel: GT

    Helpful (0) (0)

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