This Cover Comp,cylind is the most expensive of the items that make up this E-1 assembly.
The most reasonably priced component used on the Crf250r 2009 (9) Japan Me10-150 E-1 is the Bolt.flang 6x12.
Some items from this specific schematic: Cover Comp,cylind, Bolt,head Cover, Bolt.flang 6x12, Rubber,mount.