Description:

Replaces OEM Part: Yamaha 17D-25448-50-00. Compatible with: 980, 1983, 1997-1998, 2015-2019 Yamaha YZ125, 1979-1984 Yamaha YZ250, 2016-2019 Yamaha YZ250X, 2015-2019 Yamaha YZ250FX, 2010-2019 Yamaha YZ250F, 1977-1979 Yamaha YZ400. Compatible with: 2010-2019 Yamaha YZ450F, 2016-2019 Yamaha YZ450FX, 1983 Yamaha YZ490, 1998 Yamaha WR250Z, 1983-1984 Yamaha IT250. Pitch: 520, Teeth: 48; Sprocket Material consists of SAE 1023 structural carbon steel. Hub Inner Diameter 152mm; Mounting Hole (ID) 8.5mm; Distance Between Mounting Holes (ID) 175mm.