The most reasonably priced component used on the Dr650se 2004 (k4) Usa (e03) Cam Chain is the Gasket(8.2x14x1) (nas).
The Cam Chain is made up of components including this Chain,camshaft Drive which is the most expensive.
With a quantity of two pieces, the Bolt,cl.cover is the most used part in the CAM CHAIN diagram.