TM40-6 Smoothbore TM-series Flat side carburator TM40

The Mikuni TM40 flat side carburetor, also known as the early HS40, is designed to provide a significant performance boost over traditional round slide units. By utilizing a flat slide design, it creates a smoothbore effect that allows air to flow faster and more efficiently through the venturi. This results in a stronger vacuum at the needle jet, providing more precise fuel metering and immediate throttle response. This specific version does not feature roller bearings on the throttle slide. It comes as a single carburetor and includes a choke cable. Mikuni remains an industry standard for reliable fueling and tunable performance. Sold individually.