nineteen components are shown in this Kx450-e9f Kx450f 2009 Usa Gear Change Mechanism exploded diagram.
The component with the lowest price in the Gear Change Mechanism schematic is the Nut-hex,6mm.
Some items from this specific schematic: Washer,6x12.8x1.2, Bolt-flanged-small,6x, Spacer, Pawl.