Abstract: A bicycle lock mountable on the frame of a bicycle and including a body which stows a "U" or "J" shaped member and a cable or other flexible securing mechanism when not in use. Both are removable from the body with the "U" or "J" shaped member movable into a position encircling a rim of a wheel on the bicycle to prevent it from movement. The cable or the like is movable to encircle a support to which the bicycle may be locked. The cable terminates one end in the body of the lock and the other end in the "U" or "J" shaped member. An integral lock holds the "J" shaped member in fixed relationship with the body and covers or conceals the mechanism securing the body to the frame and bicycle. A retraction mechanism maintains the cable within the body except to the extend withdrawn for locking purposes. In alternate embodiments the cable encircles the lock body for storage. An integral mounting bracket is illustrated as well as a permanently mounted bracket used with a removable lock assembly.