Thule's Echelon Fork Mount makes racking your bike ultra easy. Thule's Equalized Twin Cam makes adjusting the fork clamp quicker and simpler than ever. And, it carries most bicycles, including those with disc brakes and models with tires up to 2.6 inches wide. Plus, the fork mount's dual-lock head locks your rig to the mount and locks the mount to the rack, too. The Echelon fits on square and round crossbars (sold separately).