The four Xc180l Riva 1984 Exhaust Xc180k/kc/l/lc component parts are all listed in this schematic.
Some items from this specific schematic: Exhaust Pipe Assy 1, Bolt (25g), Gasket, Exhaust Pipe, Bolt, Flange (1e2).
The Bolt, Flange (1e2) is the lowest priced item on this Exhaust Xc180k/kc/l/lc schematic.