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SLP Loudmouth Catback Exhaust (86-93 LX; 93 Cobra)

11 Reviews
Our Price


  • Item #23021
  • MPN# M31015

  • Market Price $499.95
  • You Save 4% ($20.00)
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Customer Photos
  • 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 1986-1993 5.0L LX & 1993 SVT Cobra
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 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 catback will bolt straight up to the factory Mid-Pipe without any modifications required on the 1986 to 1993 5.0 LX and 1993 SVT Cobra Mustangs to give it a rich, throaty sound.

Fitment: 1986 1987 1988 1989 1990 1991 1992 1993 Details

What's in the Box
Hardware included:
  • 8 band clamps
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: 1986-1993 LX and 1993 SVT Cobra Mustangs
Will it fit my Mustang?
  • Foxbody - 86, 87, 88, 89, 90, 91, 92, 93

Fits 1986-1993 LX, 1986 GT, and 1993 Cobra

Most Helpful Reviews

88 Notchback 5.0

Awesome, nice deep, aggressive tone. Perfect for ticking the law off! Haha

Helpful (4)

1990 GT Convertible

Definitely the best sounding Mustang exhaust to anger your neighbors!

Helpful (4)

Read All 11 Reviews
Overall Rating 4.8 out of 5 stars

Customer Photos (3) View All Photos

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Q & A

Ask a Question

Does this part fit a 1993 lx 4 cylinder mustang?

Hyp650 Year: 1993 Model: Other

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

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Customer Reviews (11) Write a Review

Overall Rating 4.8

out of 5 stars

Installation Time:Shop Install

Installation Cost:$250-$500

  • Loudness / Volume 5 5
  • Exhaust Note 5 5
  • Fit & Finish 5 5
  • Bang For Your Buck 5 5

  • 5/5

    July 11, 2008

    1990 GT Convertible

    Definitely the best sounding Mustang exhaust to anger your neighbors!


    Year: 1990 Model: GT

    Helpful (4) (1)

  • 5/5

    January 31, 2008

    88 Notchback 5.0

    Awesome, nice deep, aggressive tone. Perfect for ticking the law off! Haha


    Year: 1988

    Helpful (4) (1)

  • 5/5

    June 10, 2011

    Let it rumble

    Great set of pipes Took alot of adjusting after I had it on buy I'm a picky person I teamed the pipes up with BBK long headers and X-pipe. Great combo


    Year: 1991 Model: Other Driving Style: Daily Driver

    Helpful (2) (0)

  • 5/5

    January 16, 2011

    Best quality product I've used

    I put a set of SLP's on my wife's 96 Cobra. I liked it so much, I put a set on my 93 LX. A friend liked that so much, I put a set on his 88 Saleen. Loudmouths have a deep, aggressive tone that sounds like no other cat-back available. The quality of the product is exceptional and fits better than any other I've ever worked with. To those that have complained about the tips being too short and showing "ugly pipe", these pipes are stainless steel. Hit them with a little metal polish before you install them and they look great.


    Year: 1996 Model: Cobra Driving Style: Show

    Helpful (3) (1)

  • 4/5

    July 19, 2009

    great sound bad looks

    slp loudmouth exhaust of my mustang is great. the sound has a great rumble at idle, very quite at highway speeds, nice strong sound at wide open throttle. only problem i have with the exhaust is the way it looks from the side. the tips are the only thing that is chrome and they do not extend back far enough to the rear tires there for you can see some very ugly pipe from behind the car exhaust looks good with the big tips.


    Helpful (4) (2)

  • 5/5

    March 12, 2011

    slp loudmouth exhaust

    american muscle's fast delivery allowed me to have the exhaust to my house and installed in 3 days. Fit perfect and the sound is above and beyond my expectations. Wouldn't put any other system on after hearing this one. Awesome!!!

    shawn witham

    Year: 1992 Model: Other Driving Style: Daily Driver

    Helpful (1) (0)

  • 5/5

    January 21, 2009

    93 LX Hatch

    Just installed this kit today and love it! Definitely a different sound and really aggressive when you get on it. Pretty mellow when you are just driving around too.


    Year: 1993

    Helpful (3) (2)

  • 5/5

    January 30, 2008

    88 5.0

    great buy for the best price.............


    Year: 1988

    Helpful (1) (1)

  • 5/5

    January 08, 2008

    bad ass

    It is a great sounding exhaust! I will buy it again if I get another Mustang!


    Helpful (1) (1)

  • 4/5

    August 27, 2008

    89 notch

    Nice rumble at idle and aggressive when the pedals on the floor. Exhaust tips look good from behind, but not happy with how they look on the side. Would be better if pipe was polish from rear axle to tips.


    Year: 1989

    Helpful (1) (2)

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