From a low mileage '19 Yamaha MT09 engine,

Transmission 5th Gear

Gear, 5th Wheel 25T

Part no: 1RC-17251-10-00

Retail price $102.59

Check against your machine's part numbers, I believe this gear is same '15 FJ-09 to '20 MT-09, but double check.

Part like-new

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Thanks for looking