The Smax sport scooter features a 155cc engine, auto transmission and sporty handling.Top FeaturesPotent, Economical Engine: Powerful 155cc, liquid-cooled 4-stroke, SOHC fuel-injected engine is highly fuel efficient while producing excellent acceleration and power for commuting or highway riding.Automatic Convenience: Continuously Variable Transmission (CVT) makes operating the Smax a snap without the need to use a hand clutch or shift gears.Step-Through Design: The Smax features a roomy frame designed for overall balance and provides plenty of foot space.