https://www.pillota.com/products/k-17151-01
k-17151-01
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https://piccocentermotor.it/gb/original-spare-parts/3488-fifth-gear-on-primary-yamaha-yz-250-1984-1985-1987-39x-17151-00.html
fifth gear on primary Yamaha YZ 250 1984-1985-1987 39X-17151-00
z22 fifth gear Yamaha YZ 250 1984-1985-1987