The issue commonly encountered with fork mount bike racks falls to axle compatibility. Thule designed the TopRide to be a fork mount rack that is compatible with both thru axle and QR bikes so that users can seamlessly swap between different bikes. Note: Requires adapter for use with 20 x 110mm axles Features: The premium fork-mounted bike carrier that offers a fast and easy transport solution for both quick release and thru-axle bikes Fits the majority of thru-axle and standard 9mm quick release bikes with included adapters Accommodates bikes equipped with disc brakes Fast and easy to unmount bike from rack with simple release lever Locks the bike to the bike rack with a integrated cable lock Ratcheting wheel straps on rear quickly secure wheels to tray Specifications: Max Capacity: 40lbs Max Tire Width: 3" Max Wheel Diameter: 29" Weight: ~8lbs