Some items from this specific schematic: Gear-reverse,shaft, Rod,shift 93.7mm, Washer,17.3x30x0.5, Cam-change Drum.
The component with the lowest price in the GEAR CHANGE DRUM/SHIFT FORK(S) schematic is the Bolt,socket,6x25.
The sub assemblies and components that make up this Gear Change Drum/shift Fork(s) include this Drum-assy-change, the most expensive part.