Parts such as the Right Cover - Advancer: O-ring,9.8x2.4, Plate,lever Set, Bolt,clutch Adj., Nut,thin 6mm are included in the Cbx1000 Supersport 1980 (a) General Export / Mph Right Cover - Advancer parts fiche.
The Bolt,hex,advancer is the cheapest item from this partsfiche.
Check out any of the thirty-five Right Cover - Advancer components enlisted.