The most reasonably priced component used on the Yz125 2004 5xe3 Japan 1c5xe-100e1 Intake is the Bolt, Flange(6u1).
The sub assemblies and components that make up this Intake include this Reed Valve Assy, the most expensive part.
Some items from this specific schematic: Joint, Air Cleaner 1, Reed Valve Assy, Washer, Plate 8077743700, Screw, Pan.
