SLP Axle Back Exhaust Loud Mouth System 4" Tips GT 2011-2014/GT500 2011-2012

SLP Performance Parts:
100% of 100


  • 3" Axle Back
  • Includes 4" Tips
  • Stainless Steel Construction
  • Carb Approved
MSRP $459.99
You save 14%

SLP Loud Mouth Axle Back Exhaust System with 4" Tips for 2011-20123 Mustang GTs and Shelby GT500s. Excludes 2014 GT500

Your 2011-2014 Mustang GT V8 packs a powerful engine, why bottle it up with restrictive, wimpy-sounding stock mufflers. Unleash the Pony within, with a Loud Mouth? rear-axle back exhaust system from SLP Performance Parts. This affordable, easy-to-install kit eliminates the factory mufflers entirely, drastically reducing backpressure for enhanced power and a mind-blowing performance sound. Nothing else even comes close! Combined with our 4" polished tips, you'll really feel and hear the difference!

-Mandrel-bent 3" tubing offers unbeatable flow characteristics
-Significantly lighter than the OEM muffler assembly
-Installs in under an hour
-Constructed entirely from stainless steel
-Hand-polished, 4" dual-wall tips provide a show-quality appearance
-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

California Residents: Proposition 65 Warning

Installation Difficulty


Intermediate skill is required for this installation.

Installation Videos

Vehicle Fitment

This product will fit the following Mustang years:

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