Ford Mustang GT ROUSH Exhaust System, Off-Road w/o Tips (2005-2009)

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Part #: 401340

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Orders placed via can only be shipped to areas within the continental U.S. If you live outside the U.S., please orders must be placed through an authorized ROUSH dealer.

Product highlights for the Ford Mustang GT ROUSH Exhaust System, Off-Road w/o Tips (2005-2009):

  • Ford Mustang Mufflers, Off- Road Kit w/o Tips
  • Improves the power, fuel efficiency, and sound of your Mustang
  • Works with 2005-2009 Ford Mustang GTs with the ROUSH® Rear Fascia (part #401271)
  • Can be used to upgrade to the louder "Off-Road" sound from the "Legal" package (part #401338)
  • More aggressive exhaust sound
  • Made of T-304 stainless steel for resistance to corrosion and staining
  • Mandrel-bent tubing for increased air flow
  • Does not include exhaust tips
  • Check local noise ordinances for legality
  • Part #401340
This Ford Mustang Muffler, Off- Road Kit w/o Tips, will breed a loud, throaty-sound out of your 2005-2009 Mustang. These Off-Road Mufflers will improve the power, fuel efficiency, and sound.

The exhaust kit is made of T-304 stainless steel, providing for resistance to corrosion and staining.

The mandrel bending process used for the tubes of this system maintains a consistent inside diameter through the bended area. This method allows for a significant increase in flow over stock/serrated-bent pipes. Due to this increased efficiency, both latent power and fuel efficiency are realized.

This axle-back exhaust system bolts on and requires no cutting and attaches to the factory midpipes.

As opposed to the complete ROUSH Mustang Off-Road Exhaust System (part #401339-discontinued), this package does not include exhaust tips. This package allows you to upgrade from the "legal" version of this system (part #401338) to the "off-road" system. If you are looking to get the great sound of a ROUSH exhaust system on your 2005-2010 Mustang GT without changing your rear fascia, you can do so with the ROUSH Extreme Exhaust system (Part #421915).
WARNING: Cancer and Reproductive Harm -
Application Mustang (2005/2006/2007/2008/2009)
Difficulty Intermediate
Time 1 hour
Tools Basic tools
Instruction URL Download Instruction Manual
Install Video URL No