This Valve, Ex. is the most expensive of the items that make up this Valve / Rocker Arm assembly.
The Cotter,valve is the most widely applied product in the CB750K8 FOUR 1978 USA VALVE / ROCKER ARM ( sixteen times ).
The most reasonably priced component used on the Cb750k8 Four 1978 Usa Valve / Rocker Arm is the Nut, Tappet.