The most expensive part in this assembly is the Cam Shaft,exhaust.
twenty-two components are listed in the schematic for this Gsx550ef 1986 (g) (e01 E02 E04 E06 E17 E18 E21 E22 E24 E25 E34) Cam Shaft-valve .
The Washer, Lower is the lowest priced item on this Cam Shaft-valve schematic.