This KICKSTARTER MECHANISM assembly utilises two Bolt-flanged-small(s) - the highest specified component.
The lowest price component in this Kickstarter Mechanism parts-list fiche is the Circlip-type-c,12mm.
Some items from this specific schematic: Circlip-type-c,15mm, Guide-kick, Ball-steel,1/4, Washer,15.2x20x1.