An outer gripping portion of a bicycle handlebar includes a mounting section and a bracket section. The mounting section has a first cross-sectional shape. The bracket section has a second cross-sectional shape and is releasably coupled to the mounting section to form a first gripping section. The first and second cross-sectional shapes of the mounting section and the bracket section have flush longitudinal edges that mate together to form a first annular gripping surface of the first gripping section. Preferably, the bicycle handlebar includes a pair of outer gripping portions coupled to opposite ends of a transverse portion.