The invention relates to a cable-actuated disc brake for a bicycle. The cable-actuated disc brake has a lever with dual, opposing piston assemblies that limit the movement of brake pads in relation to a brake disc of the bicycle. The lever includes symmetrical lever arms respectively engaged with symmetrical piston assemblies that are axially spaced, coaxially aligned and rotate about a pivot axis to selectively engage brake pads with a brake disc of the bicycle.