Yamaha YZ125 2005 - 2021 FMF Fatty Exhaust Pipe Expansion Chamber Nickel

FMF Fatty Exhaust Pipe Expansion Chamber Nickel

The Factory Fatty is reminiscent of the works or cone pipe once used by Factory Teams. It shares many of the same characteristics with its craftsmanship and material quality. The Factory Fatty broadens and smoothes out the power curve while boosting gains throughout the entire power band, more low-end, more mid, and increased over-rev. No matter what type of riding you do, the Fatty has the benefits you're looking for.

- Lighter 20 gauge steel used for the body of the pipe.
- 19 Gauge steel used for the header portion.
- Includes O-rings on most models
- Hand pounded seams for smooth flow transitions.
- O-Rings Included

Fitment Details

• Yamaha YZ125 2005
• Yamaha YZ125 2006
• Yamaha YZ125 2007
• Yamaha YZ125 2008
• Yamaha YZ125 2009
• Yamaha YZ125 2010
• Yamaha YZ125 2011
• Yamaha YZ125 2012
• Yamaha YZ125 2013
• Yamaha YZ125 2014
• Yamaha YZ125 2015
• Yamaha YZ125 2016
• Yamaha YZ125 2017
• Yamaha YZ125 2018
• Yamaha YZ125 2019
• Yamaha YZ125 2020
• Yamaha YZ125 2021