The most expensive part in this assembly is the Taillight Unit Assy.
The Yamaha TAILLIGHT has thirteen products enlisted in the schematic.
Parts such as the Taillight: Grommet, Bulb, Taillight (12v 21/5w), Collar(42g), Washer, Plate 8221447500 are included in the Wr250f 2003 5um2 Germany 1b5um-100e1 Taillight parts fiche.