Parts such as the Valve(s): Spring,valve Inner, Oil Seal,rvc2-5.5x8.5, Collet, Valve-intake are included in the Klf250-a9f Bayou250 2009 Usa Valve(s) parts fiche.
The Collet is the cheapest item from this partsfiche.
This Arm-rocker is the most expensive of the items that make up this Valve(s) assembly.