A supermini is a stock 84cc mini (usually one of the five major dirtbike brands) with a modified cylinder of 100, 103, 105, 109, or 112cc's. These dirtbikes also have a
16" rear wheel and a
19" front wheel as opposed to the
normal 14" and 17" wheels on a stock 85cc bike. These bike's
ate the perfect transition bike from a mini to a full sized bike. Often, a skilled rider on a supermini can catch and pass an adult on a full sized bike.