Parts such as the Valves: Shim,t=2.30, Shim,t=2.10, Shim,t=3.20, Shim,t=2.25 are included in the Kz750n2 Spectre 1983 Usa Canada Valves parts fiche.
The Collet,retainer is the cheapest item from this partsfiche.
This VALVES assembly utilises sixteen Collet,retainer(s) - the highest specified component.