A hand-operated bicycle brake assembly includes a pair of complementary, similar, preferably identical, caliper arms having a pre-formed configuration, central supporting structure including a central aperture through the elongated caliper arm and a complementary central aperture through an offset planar portion extending from the central area of the arm, one end of the arm provided with a concave recess and threaded aperture for a locking bolt therein, a brake shoe, a support hub integral therewith and provided with spherical projections at each end for mating with a recess in the caliper arm and a bushing and secured to the caliper arm by a through bolt, the caliper arm being forked and provided with a cable clamp nut and bolt. The cable clamp nut and bolt is in two parts for engaging a cable as passed through a slot in the bolt. The brake assembly further comprises a support head having a mounting bolt for attachment thereof in adjustable fashion to a bicycle frame and a bearing support projection extending therefrom for supporting the complementary pair of caliper arms thereupon by central mounting apertures thereof. Low friction bearing washers and sleeve are provided with a locking bolt for retaining the caliper arms on the support projection and finishing the assembly.