Parts such as the Thermostat: Thermostat Assy., O-ring,47.5x2, Bolt,flange,6x22, Thermo Unit Assy are included in the Cbr900rr 1995 (s) Usa California Thermostat parts fiche.
With two applications this Bolt,flange,6x22 is the most specified part.
The Thermostat is made up of components including this Thermo Unit Assy which is the most expensive.