The Steering Stem (gsx550esf/eff/esg/efg/esh/efh) assembly is constructed from several parts from which the Stem,steering is the most expensive.
seventeen components are shown in this Gsx550es 1987 (h) (e02 E04 E21 E22 E25) Steering Stem (gsx550esf/eff/esg/efg/esh/efh) exploded diagram.