The Cylinder assembly is constructed from several parts from which the Cylinder Comp. is the most expensive.
Parts such as the Cylinder: Gasket,cylinder (nas), Dowel,pin,10x16, Cylinder Comp. are included in the Xr80r 2003 (3) Usa Cylinder parts fiche.
In this schematic the "Dowel,pin,10x16" is used most often.