These are made in USA original chain size for YSR50/80

Aluminum Rear Sprocket - 7075 T-6 Aluminum

Original Stock Gearing (Front / Rear): 12/44 YSR 50 

Original Stock Gearing (Front/Rear):14/37 YSR 80

Chain Size: 420

Available Tooth Range For This Rear Sprocket: 28-72

Sizes other than listed are a special order & must be phoned in

Sprockets available for  520 Chain are a special order & must be phoned in

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