Some items from this specific schematic: Bolt,bank Sensor, Footrest Assy,pillion,l, Bar,fr Footrest,r, Bolt,footrest Bracket.
This FOOTREST assembly utilises four Bolt,footrest Bracket(s) - the highest specified component.
The most reasonably priced component used on the Gsxr600 2003 (k3) Usa (e03) Footrest is the Ball.