The Washer(12.5x20x1) is the lowest priced item on this Gear Shifting schematic.
Of all the components used in this assembly the Cam,gear Shift is the most expensive.
This schematic depicts all components used in the Gz250 1999 (x) (e01 E02 E04 E17 E18 E22 E24 E25 E34) Gear Shifting partslist.