The Pin,gear Chnge Drum is the most widely applied product in the KZ650B1 1977 USA CANADA / MPH KPH GEAR CHANGE MECHANISM ( five times ).
The Pin-gear Change Drum is the cheapest item from this partsfiche.
Some items from this specific schematic: Bolt,return Spring, Damper,change Pedal, Cam-change Drum, Pin-gear Change Drum.