The Starting Motor assembly is constructed from several parts from which the Motor Assembly,starting is the most expensive.
The most reasonably priced component used on the Gsx550ef 1984 (e) (e01 E02 E04 E16 E17 E18 21 22 24 25 26 34 39) Starting Motor is the Nut.
Some items from this specific schematic: Bush,b, Bolt, Washer, Shim Set,starting Motor.