Yamaha YZ85 2002 - 2025 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 YZ85 2002
• Yamaha YZ85 2003
• Yamaha YZ85 2004
• Yamaha YZ85 2005
• Yamaha YZ85 2006
• Yamaha YZ85 2007
• Yamaha YZ85 2008
• Yamaha YZ85 2009
• Yamaha YZ85 2010
• Yamaha YZ85 2011
• Yamaha YZ85 2012
• Yamaha YZ85 2013
• Yamaha YZ85 2014
• Yamaha YZ85 2015
• Yamaha YZ85 2016
• Yamaha YZ85 2017
• Yamaha YZ85 2018
• Yamaha YZ85 2019
• Yamaha YZ85 2020
• Yamaha YZ85 2021
• Yamaha YZ85 2022
• Yamaha YZ85 2023
• Yamaha YZ85 2024
• Yamaha YZ85 2025