Especially designed XB4 rear wheels. They don't only perfectly fit however they are also ideal for high competition racing. The wheels are manufactured from extremely flexible product but remain durable against effects.
The side for the wheel is aerodynamic for optimum performance.
The unique top features of the wheel are noticeable through the inside the reinforcement ribs are made to make the wheels as stable that you can also to eliminate deformation.
The wheel design features a 14mm interior hex.
