The Pin-dowel,4x8 is the cheapest item from this partsfiche.
Some items from this specific schematic: Drum-assy-change, Pin-gear Change Drum, Bolt,socket,6x16, Pin-dowel,4x8.
fourteen components are listed in the schematic for this Zx1000b2 Zx10 1989 Usa California Canada Gear Change Drum/shift Fork(s) .