The Spoke-outer,123.5mmx8 is the lowest priced item on this Wheel/tires schematic.
On this parts fiche the Spoke-inner,fr,147.5m is the most specified component.
Some items from this specific schematic: Tube,2.75/3.00-14, Rim,1.40x16w, Tire,250-16 Nt117, Rim 1.60x14w.