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SLP Loudmouth Cat-Back Exhaust (94-97 GT, Cobra)

Market Price $572.95 You Save 4% ($23.00)
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  • Item 23003
  • MPN# M31009

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Features & Details

  • Rich, Throaty Exhaust Tone
  • Loudmouth "Shotgun" Race Resonators Included
  • Versatile Modular Design
  • 2.5" 409 Stainless Steel Tubing
  • 3.5" Polished 304 Stainless Steel Tips
  • Fits 1994-1997 GT and Cobra Mustangs
More Power and Sound. This SLP system includes SLP's infamous Loudmouth "shotgun" race resonators that offer virtually no exhaust flow restrictions to free up more horsepower and to produce the most aggressive sound possible.

Modular Design. SLP's unique modular design allows you to quickly and easily switch out the mufflers or resonators to suit your driving needs. Along with the included resonators, the Loud Mouth system is compatible with all SLP mufflers and resonators including the bullet-type Loud Mouth II and the traditional-style PowerFlo Muffler.

Superior SLP Construction. This SLP Cat-Back system is made from mandrel bent 2.5" 409 stainless steel tubing for its excellent non-restrictive flow characteristics and long life. The system ends with a polished 304 stainless steel 3.5" tips, that are electro-marked with the distinctive SLP logo, giving a great finishing touch and a show quality look.

Application. Designed to be a direct bolt on, this SLP Loudmouth catback will bolt straight up to the factory Mid-Pipe without any modifications required on the 1994-1997 GT or SVT Cobra Mustangs to give it a rich, throaty sound.

Fitment: 1994 1995 1996 1997 Details

What's in the Box
  • (1) Driver Side Intermediate Pipe
  • (1) Passenger Side Intermediate Pipe
  • (1) Driver Side Over-Axle Pipe
  • (1) Passenger Side Over-Axle Pipe
  • (2) Loud Mouth Resonators
  • (1) Driver Side Tailpipe
  • (1) Passenger Side Tailpipe
  • (2) Tailpipe Tips
  • (2) Ball Flanges
  • (8) 2.5 in. Exhaust Clamps
  • (1) Driver Side Hanger
  • (1) Passenger Side Hanger
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: 3.5"
Muffler Type: Straight-through Fitment: 1994-1997 GT and Cobra Mustangs
Will it fit my Mustang?
  • Cobra - 94, 95, 96, 97
  • GT - 94, 95, 96, 97

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Most Helpful Reviews


i recently got some SLP lm1's and what can i say they are a beautiful sight :P i was afraid they were going to be TOO loud, but they aren't. that is with my stock H pipe that i am still running. I am now ...

Read More
Helpful (13)

97 cobra

Fantastic product. I paired it with a Bassani Catted Stainless Steel X pipe and it is thunderous. It isn't too loud, it doesn't have an interior drone like the Flowmaster series, all the noise is out back. ...

Read More
Helpful (12)

Overall Rating 4.9 out of 5 stars
Read All 47 Reviews

Customer Photos (20) Submit Your Photo

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14 Questions / 6 Answers

Ask a Question

I have a 96 mustang gt, will I need to buy any other parts when I buy this slp loudmouth cat-back exhaust. because everyone is saying it doesn't come with some parts.


  • You will not need to purchase any other parts if you intend on replacing just the cat-back exhaust. This kit comes with everything you need for proper installation.


Helpful (0)

Hello I just bought a 98 mustang cobra convertible all stock will this exhaust Bolt right up? And how loud is this catback exhaust?


  • Hello! This exhaust will not fit a 1998 Cobra.


Helpful (0)

So are these the loud mouth 1s


  • This SLP Loudmouth Cat-Back Exhaust includes the original SLP Loudmouth resonators, not the SLP Loudmouth II mufflers.


Helpful (0)

California is very stricked when it comes to exhaust. Is this catback street legal in California?


  • Since this is a catback exhaust system, this kit is street legal in California.


Helpful (0)

if i want to hook this on to a v6 with the conversion kit, will i need to replace my bumper?


  • When using a catback for a GT you would either need to replace it with a GT bumper, or a hole will need to be cut in your existing bumper for the additional exhaust tip.


Helpful (0)

Hello American Muscle, I was wondering if these would hook up to BBK's off road X pipe without any extra modification?


  • The BBK off-road X-pipe will have a 2.5" piping size which is the same as the SLP Loudmouth exhaust. As long as the flanges match up this exhaust will work with that midpipe.


Helpful (0)

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Customer Reviews (47) Write a Review

Overall Rating 4.9

out of 5 stars

Installation Time:Afternoon

Installation Cost:$100-$250

  • Loudness / Volume 4.6 4.6
  • Exhaust Note 4.72 4.7
  • Fit & Finish 4.68 4.7
  • Bang For Your Buck 4.72 4.7

  • 5/5

    June 25, 2010

    SLP LM1

    i recently got some SLP lm1's and what can i say they are a beautiful sight :P i was afraid they were going to be TOO loud, but they aren't. that is with my stock H pipe that i am still running. I am now debating with getting an offroad H or X and im not too sure just as to how loud it will be. any incite if you or a friend is running o/r midpipes to lm1's? that would be great. over all amazing product. the tips are massive and look great

    Kyle (1997 GT)

    Helpful (13)

  • 5/5

    March 03, 2010

    97 cobra

    Fantastic product. I paired it with a Bassani Catted Stainless Steel X pipe and it is thunderous. It isn't too loud, it doesn't have an interior drone like the Flowmaster series, all the noise is out back. The Tips are a little gaudy for the SN-95 stang, so I might get different ones. It sounds like a pure muscle car now. My father has a bassani X and flowmaster 40s on his 97 cobra and with the bassani x and the SLP on my 97 cobra, they truly do sound very different but you KNOW its a cobra. Very happy with the shipping too. Arrived fast.

    Glenn D Lowe

    Year: 1997 Submodel: Cobra

    Helpful (12)

  • 5/5

    April 14, 2009

    1995 GT

    great product sounds sick!!!! thanks american muscle and SLP


    Year: 1995 Submodel: GT

    Helpful (10)

  • 5/5

    November 10, 2009


    this exhaust really amped up my 95 GT. On top of being loud and sounding like a beast, as my wife says, it was easy to install...only took me a friend about 2 hours to take off the stock exhaust, drop the back end, and put on the catback....thanks AM!!


    Year: 1995 Submodel: GT

    Helpful (9)

  • 5/5

    September 11, 2008

    1994 GT

    Put this exhaust on my 94 GT and it sounds sick. I had heard other exhausts, but nothing compares. Thanks SLP and American Muscle!


    Year: 1994 Submodel: GT

    Helpful (7)

  • 5/5

    December 29, 2010

    SLP's are the way to go

    I have a 98 GT and got a SLP Loudmouth 1 system. Im only 15 and I put it in myself the car was bone stock, so all I did was cut the old one out and basically after that you clamp on the SLP's. The instructions help with which one to put it on first, after that its cake. The sound is deep with just a stock H pipe. Easiest thing to install ever. Best system to get. Thanks AM shipped in the next day, best site EVERRR!!

    Roland Pando

    Helpful (5)

  • 5/5

    July 30, 2009

    Sooo Loud!

    I put this beast of an exhuast on my 96 GT, and it sounds so sick, big head turner. Every 1 complains that the LM 1's are too raspy, but it sounds pretty muscular 2 me. And as always it came in like 2 days and in great condition from am.


    Year: 1996 Submodel: GT

    Helpful (5)

  • 5/5

    January 18, 2008

    SLP Exhaust

    This is the best exhaust i have had on my 97 Cobra. I had a flowmaster cat back first and it was alright but this slp is just what i was looking for, Its loud and agressive


    Year: 1997

    Helpful (5)

  • 5/5

    Installation Time: Shop Install

    October 06, 2011

    Great wide open exhaust note !

    I love my new SLP LM1 they sound great and perform great. Has a real muscle tone to it! Thanks A.M.


    Year: 1994 Submodel: GT Houston,TX

    Helpful (4)

  • 5/5

    November 10, 2009


    this is the best sounding exhaust ever! and thanks AM for the fast and free shipping


    Helpful (4)

  • 5/5

    September 10, 2007

    SLP Exhaust

    This exhaust is awsome. It has such a deep rumble and its loud. I love the sound and im so glad i bought it.

    Adam Thieling

    Helpful (4)

  • 5/5

    September 28, 2010

    97 gt

    i have this exhaust with the slp x pipe and longtube headers and it sounds insane, not too loud while driving but when you get on it make sure theres no 5-0 around. took about 2 hours to install i would reccomend this to anyone with a mustang that wants a different sound.


    Year: 1997 Submodel: GT

    Helpful (3)

  • 5/5

    September 11, 2010

    95 GT

    Very happy with this product. Very good quality & fit... the sound is great. Good look and sound for my Stang. In my opinion, its louder than my old FM exhaust with cated H-Pipe. I have this paired with the Pypes X-Pipe street legal system and was able to pass emissions. Thanks AM


    Year: 1995 Submodel: GT

    Helpful (3)

  • 5/5

    January 10, 2010

    '96 Mustang GT

    This is an amazing exhaust. I didn't think it would sound as loud as it does. It is not raspy at all and fit perfectly. Thanks A.M.

    Arturo Perez

    Year: 1996 Submodel: GT

    Helpful (3)

  • 3/5

    January 10, 2009


    I have BBK L/Ts, BBK H pipe, and then SLP 1s. The car was loud, but its wasnt a deep tone I was looking for between 1800-2500 rpms. My personal taste is more of FMs.


    Helpful (3)

  • 5/5

    Installation Time: Afternoon

    April 20, 2012

    SLP is best bang for your buck

    Looked at alot of exhaust and decided to choose SLP. This is the best choice I ever made. Exhaust tone is great at idle and wot. In car noise is no more that my old Flowmaster Delta Flows. I would recommend this catback to any one with a 94-95 5.0.


    Year: 1994 Submodel: GT Lexington, SC, USA

    Helpful (2)

  • 5/5

    March 09, 2011


    Okay, so... I couldnt wait any longer. Threw the exhaust on this afternoon. I feel like I robbed SLP this exhaust is amazing!! A little loud at first but while driving I didn't want to turn the stereo on. If your on the fence about what to buy, BUY THIS ONE!


    Year: 1997 Submodel: GT

    Helpful (2)

  • 5/5

    October 08, 2010

    great system

    great system, went up easy, i installed the off road x pipe and this system and they sound great. really lets me CAI flow. if you have a 5.0 this is the kit for you!


    Helpful (2)

  • 5/5

    September 09, 2010

    SLP exhaust

    Fast, quick, and a great price!!


    Helpful (2)

  • 5/5

    March 11, 2009

    Sounds sooo good

    I put this on my 96 GT and it sounds amazing. If you are not sure of which exhaust to get, buy this for sure.


    Year: 1996 Submodel: GT

    Helpful (2)

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