Adapts HSR42 carburetor to Keihin CV bolt pattern. Complete kit includes adapter, 3 screws and O-ring.

• Adapts the HSR smoothbore carburetor to an OEM CV air filter assembly
• Can also be used with a custom flat backed air filter assembly designed for a CV type carburetor
• Great when used with our 84055 teardrop style air filter assembly found in the fuel section
• For best results we recommend using our 84307 air filter to adapter gasket

Fits: HSR-42, 45 & 48mm Mikuni Carburetors