Race Spec (RS) Rear Sprockets feature our revolutionary Angled Mud Groove. This exclusive design creates a self-cleaning effect during operation, shedding away mud that would otherwise lead to horsepower loss and sprocket wear. With their precise CNC machining and unique layout, these grooves also allow an increase in tooth surface area of up to 40% over competing sprockets. As a result, contact with the chain is significantly improved, leading to a marked increase in sprocket life over other brands. That’s the ProTaper difference.

This Part Fits:

Year Make Model Submodel 1984-2002 Honda XR200R Base 1982,1984-1989 Honda XR250R Base 1983-1985 Honda XR350R Base 1983-1984 Honda XR500R Base 1985-1987 Honda XR600R Base 2001-2009,2011-2013,2015-2024 Yamaha WR250F Base 1999-2000 Yamaha WR400F Base 2001-2002 Yamaha WR426F Base 2003-2009,2011-2024 Yamaha WR450F Base 1999-2024 Yamaha YZ125 Base 2020-2024 Yamaha YZ125X Base 1999-2024 Yamaha YZ250 Base 2001-2024 Yamaha YZ250F Base 2015-2024 Yamaha YZ250FX Base 2016-2024 Yamaha YZ250X Base 1999 Yamaha YZ400F Base 2000-2002 Yamaha YZ426F Base 2003-2024 Yamaha YZ450F Base 2016-2024 Yamaha YZ450FX Base