Kartech Engine Sprocket Eco 9T Yamaha J | Early KT100S Outboard

Kartech Engine Sprocket Eco 9T for Yamaha J and early KT100S outboard motors. This 9-tooth sprocket delivers direct engine-to-clutch engagement with reduced rotational mass. Fits Yamaha J-series and early KT100S applications where low-inertia acceleration is prioritised.