Some items from this specific schematic: Joint,two Way, Vlv Assy,shot Air, Tube F,air Intake, Tube B,air Intake.
Of all the components used in this assembly the Vlv Assy,shot Air is the most expensive.
The most reasonably priced component used on the Gl1500a Goldwing Aspencade 1991 (m) Sweden / Kph Tubing (7) is the Screw,tap.5x10.