The Crankshaft - Piston is made up of components including this Crankshaft Assy which is the most expensive.
In this schematic the "Pin, Dowel B (664)" is used most often.
Parts such as the Crankshaft - Piston: Bolt(6n6), Clip, Piston Pin, Piston (std), Pin,piston are included in the C50trx 1999 Crankshaft - Piston parts fiche.