JT Steel Sprockets are the OEM quality choice, manufactured using only the finest grade of C49 high carbon steel for the rear sprockets, and SCM420 chromoly steel alloy for the front sprockets.
Fits:

Yamaha WR250F 2020, Yamaha WR250F 2021, Yamaha WR250F 2022, Yamaha YZ250F 2005, Yamaha YZ250F 2006, Yamaha YZ250F 2007, Yamaha YZ250F 2008, Yamaha YZ250F 2009