The most reasonably priced component used on the Cr125r 1989 (k) Usa R. Crankcase Cover '87-'89 is the Bolt,flange Sh 6x.
The R. Crankcase Cover '87-'89 is made up of components including this Cover,r Crank Cas which is the most expensive.
In this schematic the "Bolt,flange,6x32" is used most often.