Easy for running with this engine, low shock, low noise.

Better design of gearshift system, easier and more convenient to operate.

Spiral shape intake pipe makes fuel and air mix better and enough, ensures full burning,  so makes the power and torque 10% higher than other engine which with same   displacement.

Using double clutch to ensure better clutch separation.  Enhanced Main shaft and counter shaft, with stronger capacity.  External fine filter, more convenient for maintance.

High power 12V DC magneto, better for power charging.  Completely new design on out-view, looks simple but beautiful.