Parts such as the Headlight: Screw,panhead, Spring, Adjust, Lens, Headlight, Spring, Set are included in the Tzr125 1987 2rh France 272rh-351f1 Headlight parts fiche.
Of all the components used in this assembly the Lens, Headlight is the most expensive.
The Screw,panhead is the lowest priced item on this Headlight schematic.