Parts such as the Shift Shaft - Pedal: Oil Seal (14x24x6-256), Circlip(58y), Pedal, Shift, Spring, Torsion (5v6) are included in the Xs650 1981 (b) Usa Shift Shaft - Pedal parts fiche.
The Shift Shaft - Pedal is made up of components including this Change Shaft Assy which is the most expensive.