BETA 250 350 400 450 498 520 RR 2005-2012 AS3 FACTORY REAR SPROCKET 520 49T BLACK BF25-none 2016-2019 Yamaha XSR 900

2016-2019 Yamaha XSR 900

2021-2025 KTM 350 SX-F

2008-2009 MV Agusta Brutale 1078 RR

2015-2019 Yamaha YZ 250 FX

BETA 250 350 400 450 498 520 RR 2005-2012 AS3 FACTORY REAR SPROCKET 520 49T BLACK BF25-none 2016-2019 Yamaha XSR 900AS3 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