The Frame - Side Cover 250b/c - 400b/c assembly is constructed from several parts from which the Frame Comp 250 Frame #206991 400 Frame #004037 is the most expensive.
Parts such as the Frame - Side Cover 250b/c - 400b/c: Tool Box Comp Yamaha Black, Damper, Side Cover (437), Damper, Side Cover (437), Grommet 214217460000 are included in the Dt400 1975 Usa Frame - Side Cover 250b/c - 400b/c parts fiche.