Rubber ideal for tracks with uneven and hard, the design has been created to give excellent grip in circuits with the presence of holes and little wheeled funds. The internal geometry of the tire drastically reduces the centrifugal effect, giving more stability to the model at high speed. The pieces of medium size are distributed in such a way as to confer a high degree of grip, while still maintaining excellent smoothness in the curve, even if the use of compounds with very soft. This product is available in the following compounds, SPORT (use fun) and COMPETITION (Race use high competition).