The fifteen Cx500c Custom 1980 (a) Denmark Vale - Upper Rocker Arm component parts are all listed in this schematic.
A sample from the products for the Vale - Upper Rocker Arm include: Shaft.up Rockearm, Retainer, Vlv Spr, Arm A.up Rocker, Sp,valve Outer.
Of all the components used in this assembly the Arm B,up Rocker is the most expensive.