YAMAHA YZ 125 250 YZ WR 250 426 450 F 1999-2026 AS3 FACTORY REAR SPROCKET 520 49T BLUE year-2004 Internal diameter 56

Internal diameter 56

2017-2023 Husqvarna TE TX FE FX 125-501 (all models)

1987 Yamaha FZR 250

2003-2011 KTM 400 EXC

YAMAHA YZ 125 250 YZ WR 250 426 450 F 1999-2026 AS3 FACTORY REAR SPROCKET 520 49T BLUE year-2004 Internal diameter 56AS3 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: 49 Chain 520 Will Fit