2001 bws 50 ... 70cc cylinder kit .. bigger 21mm carburetor, bigger intake and reeds , aftermarket exhaust , crank bearings , knobby tires , new brake pads .. new clutch and varatior kit with new belt .. scooter will do 80km with 200lb rider .. lots of power fun to ride .. just over 20 bucks a month to ride with class 5 licence!