SLP Loud Mouth II Mufflers by SLP

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  • SLP Loud Mouth II Mufflers 31064
  • SLP Loud Mouth II Mufflers 31064
  • SLP Loud Mouth II Mufflers 31064
SLP Loud Mouth II Mufflers 31064
  • SLP Loud Mouth II Mufflers 31064
  • SLP Loud Mouth II Mufflers 31064
  • SLP Loud Mouth II Mufflers 31064

Maximize flow and sound with this SLP Loud Mouth II muffler kit! This kit offers the best exhaust flow of any muffler on the market!

Item #SLP-31064
MPN# 31064

Your Price: $191.95

Market Price:$208.95
You Save 8.14 % ($17.00)

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  • Maximum Exhaust Flow
  • Loud, Domineering Tone
  • Mounts Virtually Anywhere


  • Straight-Through Design
  • 2.5" Inlet/Outlet
  • 304 Polished Stainless Steel

What's in the Box

  • (2) Loudmouth II Mufflers

Made in the USA

Product Description

SLP Loudmouth II Mufflers
Replace your restrictive mufflers with this SLP Loudmouth II muffler kit! These "bullet" style mufflers are a straight-through design that offers virtually no exhaust restriction while pushing an absolutely domineering growl!

High Quality Construction
This SLP muffler kit is constructed with polished, 304 stainless steel that's built to last. The inner core is ceramic-wrapped and perforated to reduce high-frequency noise and in-car resonance. The mufflers have a 2-1/2" inlet and outlet and can be mounted by welding or clamping them to your exhaust. The overall length is 18-3/16" with a 4-1/2" body diameter.

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About This Brand

SLP - Packaged Performance, Guaranteed Horsepower
SLP's Loudmouth exhaust is one of the most recognized systems on the market! They strive to offer the highest quality aftermarket components for Latemodel Mustangs! Their high quality exhaust components increase power, performance, and give your Mustang a louder exhaust tone for that true American muscle car sound. Choose from a variety of cat back, axle back, and resonator kits for your Mustang at

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