On this parts fiche the Screw M8x25 is the most specified component.
The 021 R.h. Foot Rests is made up of components including this Bracket Front Right Footrest which is the most expensive.
This schematic depicts all components used in the Ss800s 2003 Usa (supersport 800s) 9151-1681a 021 R.h. Foot Rests partslist.