Matters´most famous racing wheel is the G13 wheel. After 13 generations of testing, the G13 was born and is the most developed racing wheel in the history of speed skating. There is a major focus on road and marathon events, but in reality, the G13 is a multi-purpose wheel that can be used also in many track racing situations. The 100mm uses the thin wheel profile for maximum rolling speed. G13 100 is the best choice for fast and flat marathon events. This wheel is 100mm and comes in F1 / 86A hardness. BEAT YOUR BEST.