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SLP Loudmouth II Catback Exhaust (98 GT, Cobra)

5 Reviews
Our Price

$574.99

  • Item #23025
  • MPN #M31011A
  • Market Price $627.99
  • You Save 8% ($53.00)
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Customer Photos
Features
  • 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 1998 GT and SVT Cobra Mustangs
Description
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 Catback 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 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 to be a direct bolt on, this SLP Loudmouth II catback will bolt straight up to the factory Mid-Pipe without any extra modifications required on the 1998 GT and SVT Cobra Mustangs to give it a rich, throaty sound.

Mustang Fitment: 1998 Details

What's in the Box
  • (2) Bullet Style Muffler
  • (2) Exhaust Tip
  • (2) Flow Tube
  • (2) Over Axle Pipe
  • (2) Axle-Back Pipe
  • (2) Hanger
  • (2) Hanger Spacer
  • (8) Clamp
  • (2) Flange Connection
  • (4) Bolt
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: Straight-through Fitment: 1998 GT and Cobra Mustangs
Fitment
  • Cobra - 98
  • GT - 98

Most Helpful Reviews View All

Overall Rating 4.8/5 Write a Review
5/5
Almost Perfect

First of all, I\'d like to thank American Muscle for amazing service and great, fast shipping. Got it to me a day earlier than expected. Thank you AM! The SLP Loudmouth 2 kit is simply put: GREAT.

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Helpful (1) (0)

5/5
Great Product!

I installed by myself in 4 hours from start up to clean up with the car on jack stands. This exhaust has a mellow tone under normal driving and is somewhat loud under hard acceleration. I have a catted

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Helpful (1) (0)

Customer Photos (3) View All

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Reviews (5) Write a Review

  • 5 Stars .80 80%
  • 4 Stars .20 20%
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4.8

out of 5 stars

5 Customers Recommend this Product

Installation Time:Afternoon

  • Loudness / Volume: 5 5/5
  • Exhaust Note: 5 5/5
  • Fit & Finish: 5 5/5
  • Bang For Your Buck: 5 5/5
Filter By Sort By
  • 5/5

    Perfect note SLP 2

    November 21, 2014

    Paired this with off-road bbk x pipe and it's the perfect tone, not too loud but let's people know you mean business!

    Jmartin93

    Year: 1998 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 3 Dinwiddie, VA

    Helpful (1) (0)

  • 5/5

    Great Product!

    February 25, 2012

    I installed by myself in 4 hours from start up to clean up with the car on jack stands. This exhaust has a mellow tone under normal driving and is somewhat loud under hard acceleration. I have a catted SLP x-pipe & this exhaust is quieter than the rusted out Flowmaster Am Thunder cat-back it replaced. The fit & finish is top notch! No more banging against the floor boards or frame under hard acceleration! If you want really loud all the time go with LM1 & an x-pipe.

    Kevin04

    Year: 1998 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 1 Orlando, FL

    Helpful (1) (0)

  • 4/5

    98 Cobra SLP x-pipe with cats + SLP LM2

    June 26, 2009

    Firstly, this is a great kit, if you have expericence u will agree. Most people want to know the sound level to expect with the LM2 compared to the stock exhaust or the LM1. I have the SLP catted X-pipe(get this first, its awesome) and minor intake ect work done. The LM2 i sdefinitely not overly loud. I removed a Flowmaster cat-back to install this LM2. Its quieter than the Flowmaster except on hard acceleration its louder and sounds better, its deep. I wish it overall was a little louder tho, at idle or just a cruise speed, even over 80mph, you can barely hear the car running at all. It does sound good on acceleration, if you want LOUD i expect the LM1 shoud get you there. From the videos ive seen and the fact that the LM1s are just resonators, the volume level is gonna be to the max and too loud for some. Im gonna buy the LM1s next month and switch them out for fun.

    Jayme Mckinney

    Year: 1998 Model: Cobra

    Helpful (1) (0)

  • 5/5

    Almost Perfect

    April 16, 2008

    First of all, I\'d like to thank American Muscle for amazing service and great, fast shipping. Got it to me a day earlier than expected. Thank you AM! The SLP Loudmouth 2 kit is simply put: GREAT. The fit and finish is spot on. Everything you need for a great and easy installation is in the box. This was the 2nd time I have ever installed exhaust on one of my mustangs and I did it by myself with basic tools in under 2 hours. Great job SLP! This kit also sounds fantastic. Loud without being too loud. Great smooth, deep tone without any drone or being raspy. Somewhat like Magnapacks but more smooth. In my opinion, the perfect mustang sound. Thank you SLP!

    Stephen

    Helpful (1) (0)

  • 5/5

    Very Nice!

    July 02, 2008

    The SLP Loudmouth 2 exhaust sounds awesome! This is the first and only exhaust system I will ever buy. This is truly a great system to buy.

    Dustin A.

    Helpful (0) (1)

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