The Screw, Hexagon is the cheapest item from this partsfiche.
The Cylinder is made up of components including this Cylinder Head Assy which is the most expensive.
Parts such as the Cylinder: Gasket (nas), Bolt, Flange, Bolt, Socket Head, Screw, Hexagon are included in the Yp125r 2006 1b91 France 1e1b9-351f1 Cylinder parts fiche.