Parts such as the Transmission: Bolt,hex.,6x10, Collar,15mm, Sprocket,drive (1, Set Ring,20mm are included in the Cb250 Nighthawk 1990 (l) Usa Transmission parts fiche.
The component with the lowest price in the TRANSMISSION schematic is the Bolt,hex.,6x10.
The Transmission is made up of components including this Shaft Comp,counte which is the most expensive.