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

AmericanMuscle no longer carries the SLP Loudmouth Cat-Back Exhaust (94-97 GT, Cobra). Please check out 1994-1998 Mustang Cat-Back Exhaust for an updated selection.

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

MPN# M31009

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

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?

    Customer Photos (23) Submit Your Photo

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      Questions & Answers (21)

      5 Top Rated Questions

      Does this cat back bolt up to the stock h-pipe on a 1994 mustang?

      • Hello! Yes the SLP Loudmouth Cat-Back Exhaust will bolt up directly to the factory H Pipe on your 94 Mustang.

      Helpful (2)

      What is the difference between loudmouth 1 and 2?

      • The loudmouth 1's will be louder and more aggressive whereas the loudmouth 2's are not as aggressive.

      Helpful (0)

      Will these fit the Mac ceramic long tude headers?

      why is it no longer available? also, this same system will fit 5.0 and 4.6?

      • Unfortunately this exhaust was discontinued and was replaced with this exhaust: https://www.americanmuscle.com/slp-loudmouth2-catback-94-97.html. Both are designed to fit all 94-97 GT and Cobra models.

      Helpful (0)

      Will these fit on my bbk offroad xpipe?

      • Yes, this exhaust is compatible with the BBK Off-Road X-pipe.

      Helpful (0)
      Post Your Question
      10 More Questions
      I have a 1998 gt, why won't it fit on my car? It says 94-97 1 answer
      Will this set up work with the bbk long tube headers and bbk shorty catted h pipe that you guys also sell? 1 answer
      hey American muscle, I have a 94 cobra and I was wondering if these would fit on my bbk off-road x pipe and my bbk long tubes? thank you.... 1 answer
      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. 1 answer
      Hello I just bought a 98 mustang cobra convertible all stock will this exhaust Bolt right up? And how loud is this catback exhaust? 1 answer
      So are these the loud mouth 1s 1 answer
      California is very stricked when it comes to exhaust. Is this catback street legal in California? 1 answer
      if i want to hook this on to a v6 with the conversion kit, will i need to replace my bumper? 1 answer
      Hello American Muscle, I was wondering if these would hook up to BBK's off road X pipe without any extra modification? 1 answer
      Do these come with catalytic converters? 1 answer

        Customer Reviews (60) Write a Review

        Overall Rating 4.9

        out of 5 stars

        Installation Time:Afternoon

        Installation Cost:$100-$250

        • Loudness / Volume 4.605263 4.6
        • Exhaust Note 4.736842 4.7
        • Fit & Finish 4.631579 4.6
        • Bang For Your Buck 4.68421 4.7



        • 5/5

          Installation Time: Shop Install

          Installation Cost: $250-$500

          June 07, 2018

          Exhaust

          It’s so freaking loud!!! Sounds ridiculous with the bbk off-road x pipe.

          ZackS

          Year: 1999 Submodel: Cobra

          Helpful (6)

        • 5/5

          Installation Time: Shop Install

          June 04, 2018

          Great Exhaust!

          Finally got this system installed and what a difference from stock. Now my car sounds like a V8 mustang should! Tone is mild at idle and not annoying, but stomp on the go pedal and man does it come alive! Was apprehensive about this exhaust but well worth it. Had it installed at a shop and they said install was a breeze for a kit they haven't heard of.

          RedStang94

          Year: 1994 Submodel: GT

          Helpful (6)

        • 4/5

          Installation Time: Afternoon

          May 31, 2018

          Great tone I love that sound

          If you have a 1995 Mustang GT it will take some time remove the old exhaust if you plan to keep it. Putting the new exhaust if you are alone, need two people to install it. When you are over the axle you may need to adjust the pipes to fit.

          diamondfurniture

          Year: 1995 Submodel: GT

          Helpful (6)

        • 5/5

          Installation Time: Less than 1 Hour

          April 20, 2018

          Great sound

          Easy to install and has a terrific sound. Very satisfied!

          JamesW

          Year: 1995 Submodel: GT

          Helpful (6)

        • 5/5

          Installation Time: Less than 1 Hour

          April 18, 2018

          Loud exhaust easy install

          I installed this exhaust on my 96 Cobra. It's loud with a nice rich tone. Your neighbors are sure to hate you. Install was easy with a friend's help. I'd buy again.

          KevinY

          Year: 1996 Submodel: Cobra

          Helpful (7)

        • 5/5

          Installation Time: Afternoon

          March 26, 2018

          Amazing!!

          Sounds absolutely amazing!!!!! Not for those who are afraid of a loud car!! The great thing is that it sounds like a loud performance exhaust, not like I’m running straight pipes or something. Performance is also amazing, probably gained about 5-10hp over the regular h pipe/Flowmaster setup.

          JonathanB

          Year: 1996 Submodel: Cobra

          Helpful (6)

        • 5/5

          Installation Time: Less than 1 Hour

          January 04, 2018

          96 gt ALIVE!

          Completely changed the dynamic of the car. Went from "beast" to "SAVAGE" In under an hour of wrk. Love cold starts, and driving even more now.

          ChrisC

          Year: 1996 Submodel: GT

          Helpful (8)

        • 5/5

          Installation Time: Less than 1 Hour

          January 01, 2018

          great sound and quality

          I would recommend again to recommend good price performance ratio highly recommended

          ClaudioM

          Year: 1995 Submodel: GT

          Helpful (7)

        • 5/5

          Installation Time: Less than 1 Hour

          December 12, 2017

          Best sound for the 2v!

          SLP over did themselves when they made this Cat-Back Exhaust! This has made my Gt a head turner for sure!

          Kyle

          Year: 1996 Submodel: GT

          Helpful (8)

        • 5/5

          Installation Time: Afternoon

          December 11, 2017

          Slp loud mouth

          Fit and finish was very nice. Install wasn't bad with a floor Jack and stands. Took about 2 hours or so , recommend not tightening every bolt until you have it hung and aligned . Looks amazing and the sound is the best I've heard on a mustang . Have BBK short headers , BBK x pipe with the SLP exhaust and you can hear it coming from far down the road. Couldn't be happier , nice aggressive, if you wanna be heard , get this set up. Thanks AM

          JeffR

          Year: 1995 Submodel: GT

          Helpful (7)

        • 4/5

          Installation Time: Afternoon

          December 11, 2017

          Excellent, but not perfect

          The cat back exhaust is excellent, great sound, although some rasp, the sound isn't too bad. Aside from them being super loud, they're a real head Turner. The "mufflers" and the tips were excellent, wrapped in bubble wrap and everything, but as for the actual pipes themselves, they were scratched and just didn't look like I was expecting.

          GerardoO

          Year: 1997 Submodel: GT

          Helpful (7)

        • 5/5

          November 29, 2017

          Came quick

          Not sure how it will all sound and price together as it won't go in until my 331 stroker goes in.

          WarrenP

          Year: 1994 Submodel: GT

          Helpful (7)

        • 5/5

          Installation Time: Afternoon

          November 23, 2017

          SLP LM1

          Extremely happy with the purchase. No headers or mid pipe but it still gives the sound of life to my 94 GT. Like others have said, don’t forget the loc-tite

          slowman

          Year: 1994 Submodel: GT

          Helpful (7)

        • 5/5

          Installation Time: Afternoon

          September 26, 2017

          Loud

          Love the rumble man its gonna sound great with the bbk hpipe

          CjC

          Year: 1995 Submodel: GT

          Helpful (7)

        • 5/5

          Installation Time: Less than 1 Hour

          July 25, 2017

          pretty good, they are what they are, LOUD!

          Love them, love the pops they make and love the sound when I hit the gas. Personally I don't like the top end of 3rd and 4th with an O/R X-Pipe so I am gonna change out for an H-pipe.

          JustinR

          Year: 1996 Submodel: Cobra

          Helpful (7)

        • 5/5

          Installation Time: Afternoon

          July 08, 2017

          It's awesome

          I have a 97 GT with a off-road x pipe on it makes this thing sound awesome and it's loud

          Kenneth

          Year: 1997 Submodel: GT

          Helpful (7)

        • 5/5

          Installation Time: Afternoon

          May 23, 2017

          SLP LM1

          Love the product. It is a great upgrade for sound and look over my flowmaster cat back I had previously. The sound is great and there is no drone on the highway.

          Stangin95

          Year: 1995 Submodel: GT

          Helpful (7)

        • 5/5

          Installation Time: Less than 1 Hour

          May 08, 2017

          AWSOME!!!!!!!

          GREAT PRODUCT AND SERVICE, I EXPECTED A 7 WEEK DELAY DO TO MY LOUDMOUTH CAT BACK EXHAUST WAS OUT OF STOCK BUT I RECEIVED IT 4 DAYS AFTER I ORDERED IT AND IT SOUNDS AMAZING.

          TrevorS

          Year: 1994 Submodel: GT

          Helpful (7)

        • 5/5

          Installation Time: Afternoon

          March 29, 2017

          Love it

          Sounds great, even with a stock mid pipe. Looking to get a catted mid pipe next to maybe this really sound mean.

          EarvGotti

          Year: 1998 Submodel: Cobra

          Helpful (7)

        • 5/5

          Installation Time: Afternoon

          February 16, 2017

          95 5.0

          Brings a smile to my face every time I step on the gas.

          JD

          Year: 1995 Submodel: GT

          Helpful (7)

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