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SLP Loud Mouth Axle Back Exhaust Pontiac G8 GT/GXP


Quick Overview

Release all the dormant power in your Pontiac G8 with this SLP Loud Mouth Axle Back Exhaust.

Sku # : SLP-Loud-Mouth-Ponitac-G8-ER3
Are you tired of owning a muscle car that has a V8 but sounds like a V6?  Then give your Pontiac G8 race proven performance and a powerful deep muscle car sound to match its engine size with this SLP Loud Mouth Axle Back Exhaust.  This kit is affordable and easy to install; only taking an hour and a half and you will have a completely new sounding G8.  The SLP Loud Mouth exhaust replaced the two factory mufflers with 2 16" long 2.5" O.D. stainless steel tubes and custom G8 GT polished stainless steel tips.  By removing the mufflers you will drastically reduce backpressure, giving you enhanced power and a mind blowing new muscle car sound.

This SLP Loud Mouth exhaust for the G8 produces 10HP over stock and does not create interior cabin resonance or drone.


  • Maximum Flow with straight 2.5" Tubing
  • Lighter than the OEM assembly
  • Installs in under an hour and a half
  • Constructed entirely from stainless steel
  • Two custom tailored G8 GT 304SS tips
  • Emissions legal in all 50 states
  • Includes pre-welded hangers detailed instructions, and all necessary installation hardware
  • Covered by SLP's Performance Guarantee and limited lifetime warranty

Fits: 2008-2009 Pontiac G8 GT/GXP


  • 2008-2009 Pontiac G8 GT/GXP Loud Mouth Axle Back Exhaust (31191)

If you have any questions about this SLP Loud Mouth Axle Back Exhaust For the Pontiac G8 Please give us a call at 714-582-3330

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