The Cam Chain is made up of components including this Chain,camshaft Drive which is the most expensive.
Parts such as the Cam Chain: Gasket,tensioner Adjuster (nas), Chain,camshaft Drive, Guide,cam Chain, Plug,adjuster are included in the Dr250s 1985 (f) (e01 E04 E15 E18 E21 E22 E24 E25 E39 E41) Cam Chain parts fiche.
The Gasket 8.2x14x1 (nas) is the lowest priced item on this Cam Chain schematic.