On this parts fiche the Bolt,flange,6x100 is the most specified component.
The Pa50i Hobbit 1979 (z) Usa / 20 Mph Cylinder / Cylinder Head consists of twenty-one pieces with the Cylinder Comp. being the most expensive.
Some items from this specific schematic: O-ring,1.4x3.6, Gasket,cylinder, Gasket, Cyl. Head (nas), Cylinder Comp..