Some items from this specific schematic: Bolt(47x), Collar (7g5), Bolt(81e), Head, Cylinder 1.
This Cylinder 1 is the most expensive of the items that make up this Cylinder Head assembly.
The most reasonably priced component used on the Yz125 2008 1c3f Japan 1g1c3-100e1 Cylinder Head is the Bolt(3tc).