Of all the components used in this assembly the Crankshaft Comp. is the most expensive.
In this schematic the "Brg A,crankshaft" is used most often.
Parts such as the Crankshaft / Piston - Chart: Piston (std.), Crankshaft Comp., Piston(0.50), Brg D,crankshaft are included in the Cb750sc Nighthawk 750 1983 (d) Usa Crankshaft / Piston - Chart parts fiche.