The Camshaft/valve assembly is constructed from several parts from which the Camshaft Comp.,rr is the most expensive.
Some items from this specific schematic: Cotter,valve, Seat,valve Spring, Seat,valve Spg., Valve,inlet.
The most reasonably priced component used on the Xl600v Transalp 1992 (n) Germany Camshaft/valve is the Washer,wave,12mm.