This brand new never used Yamaha Yz250 Yz125 Black Flo 51 Tooth rear Sprocket is a motorcycle part made of aluminum and designed for Yamaha motorcycles. It is compatible with various Yamaha models from 2005 to 2024. The sprocket has 51 teeth and a black finish. The manufacturer part number is 783-51. The sprocket will also fit yz250f and yz450f