Mikuni Hsr42 Easy Carburetor Kit For Harley Big Twin Evo Get better motorcycle performance, more power and dependability, all with the Mikuni Hsr42 Easy Carburetor Kit. Replace your stock CV carb with this two-piece throttle slide that rolls on stainless bearings for smoother operation, excellent response, and easier starting. The 42mm carburetor smoothbore Venturi creates great airflow, while the enlarged needle and seat provide extended full-throttle operation. The adjustable accelerator pump gives you instant throttle response at any Rpm, and the light throttle return spring makes for easy pull operation. The Easy Carburetor Kit works with stock manifold and throttle cables, choke cable and air cleaner. This kit includes the carb adaptor. High-flow air filter is recommended for maximum performance. Features Replaces stock CV carb Stainless bearings Pre-jetted 42mm carburetor smoothbore Enlarged needle and seat Instant throttle response at any RPM Easy pull operation Works with stock manifold and throttle cases Includes carb adaptor Use with high-flow air filter