The most reasonably priced component used on the Cb400nd 1984 (e) France Piston - Connecting Rod is the Clip,piston Pin.
Some items from this specific schematic: Nut Conrod, Piston (0.75), Brg C,con Rod, Piston (0.50).
This Rod Comp,conn. is the most expensive of the items that make up this Piston - Connecting Rod assembly.