HYDRAULIC PRESSURE CONTROL UNIT, BRAKING SYSTEM, AND BICYCLE

A hydraulic pressure control unit where a degree of freedom in connection to a bicycle is improved is provided. A braking system including such a hydraulic pressure control unit is also provided. A bicycle including such a braking system is also provided. A hydraulic pressure control unit () of a braking system mounted on a bicycle and capable of executing an antilock braking control includes a base body (), a coil casing () in which an inlet valve and an outlet valve are accommodated, and a fixing member (). The fixing member () is joined to the coil casing () or the base body () in a state where a columnar space () with both ends opened is formed between a partial region of an outer surface of the coil casing () or the base body () and a partial region of an outer surface of the fixing member ().