Both 50cc and 150cc version of this scooter. Probably our fastest 150cc scooter being the smallest in overall size. They are exactly the same size vehicle between 50cc and 150cc with the only change being the engine. This gives the 50cc owner larger tires and a larger front disk brake for increased stopping power. It gives the 150cc a smaller body so the power to weight ratio is a smidge higher than our other 150cc models.