thirty-nine components are shown in this Klx450acf 2012 Europe Valve(s) exploded diagram.
The lowest price component in this Valve(s) parts-list fiche is the Seat-spring.
Parts such as the Valve(s): Shim,t=2.45, Spring-engine Valve,e, Shim,t=2.525, Shim,t=2.475 are included in the Klx450acf 2012 Europe Valve(s) parts fiche.