The Collet is the cheapest item from this partsfiche.
A sample from the products for the Valve(s) include: Shim,t=3.25, Seat-spring, Shim,t=2.95, Valve-exhaust.
The twenty-nine Kle650a8f Versys 2008 Europe,middle East,africa,uk Valve(s) component parts are all listed in this schematic.