Some items from this specific schematic: Joint,exh Pipe, Head Comp,cyln, Washer,sealing,6., Gskt,cyln Head (nas).
The Cylinder/cylinder Head (cr125r2,3) assembly is constructed from several parts from which the Cylinder Comp,a is the most expensive.
Check out any of the twenty Cylinder/cylinder Head (cr125r2,3) components enlisted.