The Circlip-type-c,17mm is the lowest priced item on this Transmission schematic.
A sample from the products for the Transmission include: Sprocket-output,13t, Gear,input 5th,27t, Gear,input,2nd,18t, Gear,output 3rd,34t.
This Gear,input,3rd&4th,25 is the most expensive of the items that make up this Transmission assembly.
