The Nut, Flange, 8mm is the lowest priced item on this Front Brake Caliper schematic.
Parts such as the Front Brake Caliper: Pin B,bolt, Bolt,caliper, Plate,hanger Pin, Pin A,bolt are included in the Nsr125r 2000 (y) Italy / Ls Front Brake Caliper parts fiche.
On this parts fiche the Seal Set,piston is the most specified component.