With a quantity of eight pieces, the Retainer,6mm is the most used part in the LOWER COWL diagram.
Parts such as the Lower Cowl: Nut,floating,5mm, Lid,l.*pb-161c-u*, Retainer,6mm, Lid,r.lowe*r-134* are included in the Cbr600f Hurricane1987 (h) Spain / Kph Lower Cowl parts fiche.
The lowest price component in this Lower Cowl parts-list fiche is the Bolt,flange,6x12.