Parts such as the Swingarm: Washer, Seal-oil,swing Arm, Washer,magneto, Seal are included in the Ksf400-a6f Kfx400 2006 Usa Swingarm parts fiche.
Of all the components used in this assembly the Arm-comp-swing is the most expensive.
The lowest price component in this Swingarm parts-list fiche is the Washer,magneto.