This “BMX” or “motocross” style of riding is only for the most skilled riders, and involves jumping from one mound of dirt to another. It also includes riding over and around ”urban obstacles” such as man-made, or other concrete, structures, or racing on a track consisting of jumps made from mounds of dirt which the rider must negotiate by jumping or turning at speed. These forks should only be used with disk brakes, and those frames, wheels and other components specifi cally designed for this riding style. The disk brakes must be attached to the designated mounting points provided on the fork. Never make any modifi cation to your fork when attaching any equipment.