The fourteen Gsx550es 1986 (g) (e01 E02 E21 E22 E25 E34) Right Handle Switch (gsx550esf/eff/esg/efg/esh/efh) component parts are all listed in this schematic.
With two applications this Screw is the most specified part.
The most reasonably priced component used on the Gsx550es 1986 (g) (e01 E02 E21 E22 E25 E34) Right Handle Switch (gsx550esf/eff/esg/efg/esh/efh) is the Screw.