YAMAHA YZ 125 250 YZ WR 250 426 450 F 1999-2026 AS3 FACTORY REAR SPROCKET 520 51T BLUE year-2017 2025 Honda CRF 250 R

2025 Honda CRF 250 R WE

2020-2023 KTM 150 EXC

1994-2008 Kawasaki KX 125

2012-2016 Honda CRF 250 L

YAMAHA YZ 125 250 YZ WR 250 426 450 F 1999-2026 AS3 FACTORY REAR SPROCKET 520 51T BLUE year-2017 2025 Honda CRF 250 RAS3 Performance Factory Series rear sprockets combine the strength of steel and the light weight of aluminium to give you the ultimate hard wearing rear sprocket. The outer ring is manufactured from hardened steel with a nickel coating and will outlast an aluminium sprocket by up to 3 times. The inner ring is constructed from aircraft grade 7075 T6 aluminium and is up to 50% lighter than a standard steel sprocket. Details Teeth: 51 Chain 520 Will Fit