Some items from this specific schematic: Shim,tappet (1.72, Shim,tappet (2.20, Arm Comp,exh Rock, Shim,tappet (1.85.
The Camshaft/valve is made up of components including this Camshaft Comp. which is the most expensive.
one hundred thirty-nine components are shown in this Crf150r 2009 (9) Australia Camshaft/valve exploded diagram.