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

Item 23024
AmericanMuscle no longer carries the SLP Loudmouth II Cat-Back Exhaust (94-97 GT, Cobra). Please check out Ford Mustang Cat-Back Exhaust for an updated selection.
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    Product Information

    Features, Description, Reviews, Q&A, Specs & Installation


    • Rich, Throaty Exhaust Tone
    • Loudmouth II "Bullet-Type" Race Mufflers Included
    • Versatile Modular Design
    • 2.5" 409 Stainless Steel Tubing
    • 3.5" Polished 304 Stainless Steel Tips
    • Fits 1994-1997 GT and SVT Cobra Mustangs


    More Power and Sound. This SLP system includes SLP's famous Loudmouth II "Bullet Style" race mufflers for minimal restriction, increased horsepower and an aggressive tone, that are only second to the Loudmouth "shotgun" race resonators for sound.

    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 bullet mufflers, the Loud Mouth II system is compatible with all SLP mufflers and resonators including the shotgun style Loud Mouth Resonators 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 brightly 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 as a direct bolt on, this SLP Loudmouth II catback will bolt straight up to the factory Mid-Pipe without any modifications required on the 1994-1997 GT and 1994-1997 SVT Cobra Mustangs to give it a rich, throaty sound.

    Fitment: Details

    CA Residents: WARNING: Cancer and Reproductive Harm -

    Installation & What's in the Box

    Installation Info

    What's in the Box

    Hardware included:
    • (8) band clamps

    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

    Customer Reviews (24)

    Write a Review

    Ratings Summary

    5.0 out of 5 overall rating from 24 customers

    Installation Time: Afternoon

    • April 30, 2020

      5 1995 GT - Art Installation Time: Afternoon


      Perfect fit easy to install sounds great at idle and cruising with no drone but drop a gear and listen to it sing

      Helpful (0)
    • October 03, 2019

      4 1994 GT - Reader248

      Great sound

      So far so good. Quality product. Sounds great. Went with these loudmouth 1s were way to loud. They definitely have a drone at highway speeds but what do you expect from a performance exhaust? Definitely recommend

      Helpful (2)
    • May 25, 2019

      5 1994 GT - CobraSN95KING Installation Time: Less than 1 Hour


      This cat back purrs at idle! But once you feed in to the exhaust calling you to give it gas it really wakes up the exhaust note! Superior quality parts,easy install even for you average Joes.Couldnt have asked for anything more maybe just that I didn’t buy it sooner

      Helpful (1)
    • April 28, 2019

      5 1997 Cobra - Matthew510

      Loudmouth2 exhaust package

      I purchased the loudmouth to exhaust for my 97 Mustang cobra haven’t put it on yet but extremely satisfied with the quality of the product so far would definitely recommend

      Helpful (0)
    • January 06, 2019

      5 1997 GT - RonH Installation Time: Afternoon

      J's 97

      WOW! Paired this with the Pypes catted x pipes and the sound was fantastic!! I didn't have any problems with anything. Thanks!

      Helpful (1)
    • July 07, 2018

      5 1995 GT - GlennR Installation Time: Afternoon

      SLP lm2 catback

      Took about two hours to install,fit perfect no problem.the sound is awesome!!!

      Helpful (3)
    • June 05, 2018

      5 1994 GT - DougP Installation Time: Afternoon

      Better than expected

      I am very happy with this exhaust, I replaced a rusted out flowmaster with the LM2 and could not be happier, the fit and finish, the hardware, the sound...Oh the sound. It is nice and mellow at idle and just cruising, no droning, but when you open it up, people will notice. I highly recommend this exhaust

      Helpful (5)
    • April 19, 2018

      5 1997 Cobra - GarrettL


      Sounds amazing with my catted x. Thanks as always to AM for the fast shipping!

      Helpful (6)
    • March 30, 2018

      5 1997 Cobra - JakeA Installation Time: Full Day

      97 cobra alive

      Installed on my 1997 cobra w stalk exhaust manifold as well as midpipe. I have to say install was no problem, the tips look mean, and it sounds even meaner. Went with the loudmouth II and don't worry its just as loud as the lm I's when rev'd out yet quiet enough neighbors don't hate you too much. The kit cam with 2 rubber hangers for the adaptor plate and assume you will be reusing the old hangers, if your car has a number of miles on it I suggest replacing them.

      Helpful (7)
    • February 14, 2018

      5 1996 Cobra - FinjaakkoN Installation Time: Afternoon

      SLP Loudmount 2

      Comfortable, powerful sound especially when loading the engine. However, when I drive on a motorway I can chat with a friend.

      Helpful (6)

    Questions & Answers (7 answers)

    5 Top Rated Questions

    I am really on the fence about this exhaust. I have purchased Pypes M80, BBK Hpipe and Longtubes now. It is insanely loud with an obnoxious glass pack type crackling sound out of first, higher RPMs and WOT. I want something that flows but is a little deeper and more restrained in these situations. I have heard numerous clips but none with my exact setup and read the multitude of subjective reviews..I am asking you for another. Either this or I just go with a Magnafow catback (not Magnapack). Overall, deeper sound with no popping and great flow. Thanks!

    • This exhaust will definitely be deeper than the Pypes exhaust you have currently but you may still experience some of the crackling sounds with this exhaust set up but it won't be too much when compared to the Pypes. This exhaust or the Magnaflow would be a great upgrade from the Pypes system and will definitely sound amazing with an H-pipe and long tube headers.

    Helpful (1)

    Wondering if this will fit on a '98 GT?

    OK I want the classic Mustang sound. Loud, throaty, and just plain mean! I don’t want it to sound all Poppy like a freaking Mini Cooper! So, is this the right exhaust for me? also what mid pipe and headers should I get? Thank you.

    • The SLP loudmouth is definitely a good option if you're wanting a loud, throaty exhaust tone.

    Helpful (0)

    I have a 94 cobra it has long tube headers and catless H-Pipe with flowmaster 40 series catback exhaust. I want to change to SLP would the catback system bolt directly up like the flowmaster did?

    • The SLP catback will bolt right up as the Flowmasters did yes.

    Helpful (0)

    im trying to find a nice deep and loud cat back for my 1996 gt and I know the slp can definitely do that but im just wondering what's the difference between the slp Loudmouth 1 and 2?

    • The Loudmouth 1 will utilize resonators that are an open chamber, with no baffling or sound deadening material. The Loudmouth 2 will use a perforated tube and sound deadening material, similar to a glasspack.

    Helpful (0)
    Post Your Question
    2 More Questions
    If I put one in my basket and check out is that a pair? Or will I have to purchase 2? 1 answer
    Can I put a gt exhaust on a v6 mustang if I buy a tuner along with it? I want to put the slp loudmouth II catback exhaust on my 1996 v6 mustang but was not sure if it would work because it is for a gt mustang. If it will work do I need to buy a tuner with it to modify the fuel effeciency? 1 answer

    Will It Fit My Mustang

    • Cobra - 94, 95, 96, 97
    • Cobra R - 95
    • GT - 94, 95, 96, 97

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