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SLP Loudmouth Resonators - Pair (79-04 All)

100+ Reviews
Our Price

$154.99

  • Item #23032
  • MPN# 31062

  • Market Price $167.99
  • You Save 8% ($13.00)
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Customer Photos
Features
  • Loud Aggressive Sound
  • Virtually no restrictions for more Horsepower
  • Designed for SLP Modular Catbacks
  • 2.5" inlet/outlet diameter
  • Hand-polished 304 stainless steel
  • Sold as a set of two
Description
More Power and Sound.   These SLP Loudmouth "shotgun" race resonators are designed to have virtually no exhaust flow restrictions to free up more power and to produce the most aggressive sound possible.

SLP Modular Design. SLP manufactures their Mustang catback exhaust systems with a unique modular design that allows you to easily and quickly swap out the included mufflers with any of the other SLP mufflers or resonators they make to suit your driving needs.

High Quality Construction.   The Loudmouth "shotgun" resonators are constructed from hand-polished 304 stainless steel and are embossed with the classic SLP logo. They have a high flow design and measure in at 2.5" ID/OD, 4.5" Body Diameter, and a 18-3/16" Overall Length.

Application. These SLP Loudmouth Resonators are designed to easily replace the existing mufflers or resonators in any of SLP's 1979 to 2004 Mustang Catback exhaust systems. The may also be used in the fabrication of custom exhaust systems.

Mustang Fitment: 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 Details

What's in the Box
Hardware included:
  • None - reuses stock hardware
Installation Info
Tech Specs
Measurements:
  • 2.5" ID/OD
  • 4.5" Body Diameter
  • 18-3/16" Overall Length
Fitment
  • Bullitt - 01
  • Foxbody - 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93
  • Mach 1 - 03, 04
  • V6 - 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04
  • Cobra - 94, 95, 96, 97, 98, 99, 01, 03, 04
  • GT - 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04

Most Helpful Reviews View All

Overall Rating 4.9/5 Write a Review
5/5
replaced my flowmasters

i had flowmasters on my car before i put these in. after the install, i get nothing but compliments from people around me. i have it set up with the bbk shortys and pypes O/R x pype. definately turns heads

Read More
Helpful (22) (1)

5/5
Head Turner!

I use to use nothing but Flowmasters on my Mustangs. I made the change to these baby's on my Mach 1 and it came to life! it will turn heads where ever you go!

Helpful (14) (2)

Customer Photos (25) View All

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Q & A (20 Questions, 9 Answers) Ask a Question

Can these be fitted on a 99 v6 with a gt exhaust? My car is a 99 v6 with a gt exhaust equipped on it. Can i weld these on here? Thanks!

Patrick95 Year: 1999 Model: V6

Question Resolved
Good Question (0) (0)
  • Absolutely. As long as you have dual exhaust with 2 mufflers, then you can have these welded on.

    Helpful (1) (0)

    Best Answer

    SlvrGT Year: 2000 Model: GT

Show 1 more answer

What would happen of I welded these in and kept my stock mufflers in?

MattymagsOrlando Year: 2002 Model: GT

Question Resolved
Good Question (0) (5)
  • There would be no reason to keep your stock mufflers in. These replace the entire muffler for the exhaust system. If you left your stock mufflers in, you could possibly hurt your mustang's performance. The exhaust system is not designed to have 2 mufflers for each tailpipe. Just bring you SLP Loudmouth Resonators to any reputable mechanic shop and have them weld these in. They will know to remove the stock mufflers and your mustang will sound AMAZING!

    Helpful (6) (0)

    Best Answer

    SlvrGT Year: 2000 Model: GT

Show 2 more answers

Bone stock exhaust I have a bone stock exhaust. I do not have the money to buy a whole catback exhaust and have it installed. So I was wondering if getting these will make enough difference in sound on a stock catback or is it a pointless buy?

stangnoob Year: 2000 Model: GT

Question Resolved
Good Question (6) (0)
  • It would not by any means be pointless, replacement of your stock mufflers is always a plus for performance. However if you do not have the equipment, you would still need to take these to a muffler shop to have them cut away the stock mufflers and replace them with these but if you check around you should be able to get these installed for no more than $100 bucks, and it will sound just as good as buying the setup that bolts from the mid-pipe back. I have the SLP setup and I love it, FYI. I will not go back to flow master after experiencing the sound these babies put out.

    Helpful (10) (0)

    Best Answer

    Sniper86 Year: 2002 Model: GT

Show 3 more answers

Reviews (100+) Write a Review

  • 5 Stars .90 91%
  • 4 Stars .08 8%
  • 3 Stars .01 1%
  • 2 Stars 0 0%
  • 1 Stars 0 0%
4.9

out of 5 stars

100+ Customers Recommend this Product

Installation Time:Full Day

Installation Cost:0-$100

  • Loudness / Volume: 4.846154 4.8/5
  • Exhaust Note: 4.826923 4.8/5
  • Fit & Finish: 4.788462 4.8/5
  • Bang For Your Buck: 4.788462 4.8/5
Filter By Sort By
  • 5/5 Yes, I recommend this product

    October 18, 2010

    replaced my flowmasters

    i had flowmasters on my car before i put these in. after the install, i get nothing but compliments from people around me. i have it set up with the bbk shortys and pypes O/R x pype. definately turns heads before they even see me coming! LOVE this product!! has the perfect sound for american muscle cars

    Jonathan

    Driving Style: Daily Driver

    Helpful (22) (1)

  • 5/5 Yes, I recommend this product

    December 15, 2010

    SLP or SUPER LOUD PERFORMANCE

    i bought the slp LM1's. I had flowmaster 40's on my mustang bullitt and they only made noise at about 1950-2200 RPM, these are loud from idle to 6 grand! i lovve them and would recommend them to anybody who owns a v8 mustang. of course though, keep your foot off the gas going by cops!

    Cody

    Year: 1995 Driving Style: Daily Driver

    Helpful (14) (2)

  • 5/5 Yes, I recommend this product

    September 20, 2010

    lm1s are amazing

    amazing sound, cheap price.. Best buy..

    Adam

    Helpful (12) (1)

  • 5/5 Yes, I recommend this product

    July 26, 2009

    Head Turner!

    I use to use nothing but Flowmasters on my Mustangs. I made the change to these baby's on my Mach 1 and it came to life! it will turn heads where ever you go!

    Bryan

    Helpful (14) (2)

  • 5/5 Yes, I recommend this product

    May 08, 2010

    slp 01 gt

    Just the sound I was looking for and for a good price

    Jason

    Year: 2001 Model: GT

    Helpful (11) (1)

  • 5/5 Yes, I recommend this product

    April 19, 2010

    love them

    sounds very nice on my stang...love 'em.... Thanks Am! you guys rock!

    Dwayne

    Helpful (12) (2)

  • 5/5 Yes, I recommend this product

    December 09, 2008

    Sound that turns heads

    I have a budget, so I decided to buy these and install them for under $300. When I did - Heaven shed a tear. Its loud, powerful sound irrupted and now my 03 GT stands out. I love being at the Gas station, firing it up, and just smiling as innocent bystanders watch me drive away.

    CK

    Year: 2003 Model: GT

    Helpful (8) (0)

  • 5/5 Yes, I recommend this product

    August 19, 2010

    ABSOLUTLY AMAZING

    These are the best mufflers you can put on your car for sound and power!!! however I must warn manuel drivers you will get much worse gas milage not because they affect the car but beccause you will crave the sound when you hit 6grand!!! Best! Best BEST EXHAUST mod you can do!!!

    Kyle

    Helpful (8) (1)

  • 5/5 Yes, I recommend this product

    August 08, 2010

    AMAZING!!!

    This changed my car from a normal road car to an all out drag car! It's much louder than just a normal cat-back and when you get n the high revs it really sounds great! With in an hour of putting these on I got a tone of looks and one guy even pulled up next to me and said "dosnt sound like a cheap one!" and gave me a thumbs up! These are a must for an mustang owner!!!

    Kyle

    Helpful (11) (3)

  • 5/5 Yes, I recommend this product

    May 06, 2011

    Sounds awesome!

    I have these pairs of slp loudmouth resonator mufflers with an o/r h pipe and it sounds just perfect. It has an aggressive tone with a rich deep throaty sound and just a bit raspy. This is the sound I always wanted and I got it with the slp loudmouth mufflers. Was very happy with the price and installation was fairly easy.

    Marino

    Year: 1991 Model: GT Driving Style: Street / Strip

    Helpful (6) (1)

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