HYDRAULIC TANK FOR A BICYCLE

The present invention relates to a hydraulic tank (13) for a bicycle comprising a first wall (25), a second wall (26) opposite to the first wall (25), a side wall (27) and an elastically deformable membrane (28) operating between the first wall (25) and the second wall (26) and defining a compensation chamber (29) within the tank (13). The membrane (28) comprises a perimeter fixing portion (67) which is fixed to the tank, a thrusting portion (66) intended to act on the brake liquid provided in the tank and a perimeter inlet portion (68) inside the tank arranged between the perimeter fixing portion (67) and the thrusting portion (66). In the condition of minimum expansion of the compensation chamber (29) the thrusting portion (66) is completely arranged between the perimeter inlet portion (68) of the membrane (28) and the second wall (26) of the tank.