a cable lock and complementary bracket for securely attaching the cable lock to a bicycle frame when not in use . the bracket has an attachment portion that mounts the bracket to a frame strut and a seat with a cavity into which the lock head of the cable lock fits . the cavity is funnel shaped to limit movement between the lock head and bracket . an arm on the bracket includes a tongue that extends into a groove in the lock head to securely retain the lock head in the bracket . the tongue is biased into the groove and is manually removable by bending the arm to allow removal of the lock head from the bracket .