Braking system for motorcycle

A braking system for a motorcycle, including a first braking force generating mechanism (35) which generates a braking force when hydraulic pressure is supplied from a first hydraulic pressure supply mechanism (40a), a second braking force generating mechanism (36)which generates a braking force when hydraulic pressure is supplied from a second hydraulic pressure supply mechanism (40b), and an association mechanism (21) which supplies hydraulic pressure to the first braking force generating mechanism (35) when an operation member (13) for operating the second braking force generating mechanism (36) is operated. A sensor (22) detects a weight of the motorcycle, wherein when the weight of the motorcycle is greater than a predetermined weight, the control unit (28) adjusts and controls so as to increase hydraulic pressure supplied to the first braking force generating mechanism (35) by the association mechanism (21).