Renthal UltraLight Rear Chainwheels are CNC machined from 7075 T6 aluminum to extremely tight tolerances, 66% lighter than steel. Computer engineered and tested to ensure a precise fitment, concentricity and load dispersion with tooth profiling to provide maximum power transfer. A combination of high strength base material, cutting edge manufacturing methods and exceptional hardwearing surface treatments its clear to see why Renthal’s light weight all aluminum rear sprockets can be found on the rear wheels of many factory race team machines.

This Part Fits:

Year Make Model Submodel 1988-1995 Honda XR250R Base 2001-2021 Yamaha WR250F Base 1999-2000 Yamaha WR400F Base 2001-2002 Yamaha WR426F Base 2003-2021 Yamaha WR450F Base 1999-2021 Yamaha YZ125 Base 2020-2021 Yamaha YZ125X Base 1999-2021 Yamaha YZ250 Base 2001-2021 Yamaha YZ250F Base 2015-2021 Yamaha YZ250FX Base 2016-2021 Yamaha YZ250X Base 1999 Yamaha YZ400F Base 2000-2002 Yamaha YZ426F Base 2003-2021 Yamaha YZ450F Base 2016-2021 Yamaha YZ450FX Base