On this parts fiche the Plate, Friction (nas) is the most specified component.
The Ybs66-6 Washer, Plain is the lowest priced item on this Clutch Yz125e/f schematic.
A sample from the products for the Clutch Yz125e/f include: Plate, Clutch(2), Gasket 425163870000, Primary Driven Gear Comp., Spring (137-16333-00).