Aprilia SR50, Piaggio NRG, Yamaha Aerox, Yamaha Jog RR, Peugeot Speedfight, Peugeot Speedfight 2, Peugeot Jetforce C-TECH, Peugeot Ludix Blaster, Gilera Runner.. There's probably more. I've ridden most of them over 50mph indicated, they're all rated between 5 and 6hp. That's great.. we gotta ride around with a restrictor in the CVT (35mph). One of the reasons I sold my peugeot 50cc and bought the 125cc scoot.