The lowest price component in this Transmission parts-list fiche is the Washer,thrust 22.
On this parts fiche the Washer,thrust,28 is the most specified component.
Parts such as the Transmission: Gear,m/shaft 4th., Ring,set,620, B/brg Rad N/com, Gear,m/shaft 4th are included in the Cb750k 1980 (a) Four England Transmission parts fiche.