This discipline is only for professional or highly skilled riders. It includes relatively high jumps or “drops’ and negotiating larger obstacles such as boulders, fallen trees, or holes. These forks should be used only 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 other equipment.