On this parts fiche the Shoe Comp.,brake (nas) is the most specified component.
Parts such as the Front Brake Panel: Bolt,flange,6x28, Cam,fr.brake, Dust-seal, Brake, Arm,front Brake are included in the Z50j Monkey 1988 (j) Finland Front Brake Panel parts fiche.
The Front Brake Panel is made up of components including this Panel,rr.*nh-138* which is the most expensive.