The most expensive part in this assembly is the Fender,rear.
Some items from this specific schematic: Fender,rear, 01500-06127, Washer, Washer (6.5x20x1.2).
The most reasonably priced component used on the Tc125 1975 (m) Usa (e03) Rear Fender (tc125a is the Washer (6.5x20x1.2).
