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2025 Yamaha YZ 250 FX
AS3 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
Replacement blocks available to purchase separately
The parts in the picture are the exact parts you will receive and the kit is supplied in a plastic box with separate compartments
BETA 250 350 400 450 498 520 RR 2005-2012 AS3 FACTORY BLACK REAR SPROCKET 520 50T BLACK year-1985 2025 Yamaha YZ 250 FXAS3 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: 50 Chain: 520 Will Fit
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