The Washer-spring,6mm is the lowest priced item on this Transmission/change Drum ('74-'7 schematic.
A sample from the products for the Transmission/change Drum ('74-'7 include: Shaft-output, Collar,eng Sprocket, Gear,output Low,35t, Sprocket-output,14t.
The sub assemblies and components that make up this Transmission/change Drum ('74-'7 include this Drum Assy-gear Change, the most expensive part.