The most reasonably priced component used on the Yz125 2019 B0v2 Europe 1ub0v-300e1 Optional Parts 1 is the Circlip (4g0).
Of all the components used in this assembly the Connecting Rod Assy is the most expensive.
A sample from the products for the Optional Parts 1 include: Bearing, Rod, Connecting, Connecting Rod Assy, Washer(8ax).