The Ring-snap,18mm is the most widely applied product in the EX400A2 GPZ400S 1988 SWEDEN CYLINDER/PISTON(S) ( four times ).
Some items from this specific schematic: Gasket,cylinder Base (nas), Ring-o,78mm, Piston-engine L,o/s 0, Ring-o,79.5mm.
The Cylinder/piston(s) is made up of components including this Cylinder-engine which is the most expensive.
