Abstract: Disclosure is made of an assembly for releasably locking a bicycle wheel mounted within the wheel fork of a bicycle frame. The assembly includes a mounting rod spanning the axle bore and having first and second extensions. The first extension has a length sufficient to receive thereof one tine of the frame fork, a spacer element, and a lock. The second extension includes a pivotal rod stop enclosed by a cover housing.

Abstract: The disclosure is of an assembly and method for inserting and withdrawing the piston component of a disc brake assembly. The assembly comprises a base plate adapted to be secured to the brake assembly housing whereby a movable shaft, mounted on the base plate, is positioned above the piston and in axial alignment therewith. An endpiece on the shaft mates with the piston for holding it during insertion or withdrawal. Mechanical means is provided to move the shaft and consequently the held piston in or out of its cylinder. The assembly and method of the invention are advantageous in that they provide a means of insertion and withdrawal of the piston component with little potential for damage to the piston or cylinder components of the brake assembly.