Mavic crossride ub mtb rear wheel the crossride ub wheel is aimed at those who require a wheel designed for rim braking a precisely cnc machined braking surface improves braking friction and eliminates shuddering when braking mavics proven construction ensures a stiff and light wheel with h2 reinforcement at the spoke holes to add strength and durability the crossride enhances acceleration and braking efficiency for better all round performance crossride ub is compatible with rim brakes only