Some items from this specific schematic: Gasket, Cylinder (nas), Nut, Flange(1uv), Nut(6l2), Bolt, Stud (5v6).
The Cylinder is made up of components including this Cylinder 1 which is the most expensive.
This Cylinder diagram displays the required parts for the Yz490 Competition 1988 (j) Usa Cylinder.