Brake control apparatus

A hydraulic brake control apparatus (18) for attaching to an open ended handlebar of a vehicle, the handlebar having a longitudinal axis. A brake housing (20) is attachable to the handlebar, the brake housing (20) including a first section (20A) residing outside the handlebar and abutting the open end of the handlebar, and a second section (20B) sized and shaped to be received inside the handlebar. A master cylinder (69') is disposed within the first section (20A) of the brake housing (20), the master cylinder (69') having a bore (68) with a bore axis that is oriented transverse to said axis of the handlebar and a master cylinder actuator (36) is in operative association with the master cylinder (69'). A micro-adjust mechanism (25), a macro-adjust mechanism (27), and a clamp mechanism (21) is also provided.