The most reasonably priced component used on the Cx500c Custom 1980 (a) England Shift Drum - Shift Fork is the Roller 6x13.
This Shift Drum - Shift Fork diagram displays the required parts for the Cx500c Custom 1980 (a) England Shift Drum - Shift Fork.
Some items from this specific schematic: Spring, Shift, Washer,12m/m, Fork,fifth Shift, B/brg Rad N/com.