Parts such as the Clutch: B/brg Rad N/com, B/brg Rad N/com, Plate B,clutch, Washer, Stopper are included in the Z50a Mini Trail K4 1973 Usa Clutch parts fiche.
Check out any of the thirty-seven Clutch components enlisted.
This CLUTCH assembly utilises eight Roller 8x10(s) - the highest specified component.