The component with the lowest price in the STEP schematic is the Washer,plain, 6mm.
Parts such as the Step: Bolt,main Step Ru, Holder L,p.step, Pin C,pillion, Pin,cotter 2.0x15 are included in the Cb1300 2009 (9) Brazil / Co Mme Step parts fiche.
On this parts fiche the Bolt,socket 8x34 is the most specified component.