Some items from this specific schematic: Ring Piston Top, Bearing,connectin, Piston Comp A, Collar,drive Gear.
The Crankshaft - Piston is made up of components including this Crankshaft,comp which is the most expensive.
This Crankshaft - Piston diagram displays the required parts for the Cota 315r 2003 (3) Crankshaft - Piston.