Abstract: A clamp for use especially in securing a bicycle front wheel to the bicycle frame in order to prevent swinging of the wheel about its steering pivot as when the bicycle is transported at the rear or on top of a vehicle, the purpose being to eliminate the problem of the wheel striking the transporting vehicle. The clamp comprises a pair of J-shaped members arranged with their flat legs lengthwise and overlapping each other so that the hooks of the J face each other for engagement of one hook with the bicycle frame while the other engages a portion of the front wheel rim of the bicycle. Provision is made for lengthwise adjustment of the members to accommodate different structural relationships, and a guide is provided for keeping the members parallel to each other during adjustment.