A clutch subassembly for a motorcycle comprising: a. a hub configured to be connected in rotation to a main shaft of a motorcycle gearbox; b. a plurality of driven discs each defining a radially internal shaped profile and such as to couple in a substantially rigid manner to rotation and free to translation parallel to an axis of rotation of the hub, the driven discs being suitable to cooperate in use with a plurality of friction discs connected by means of a clutch basket to a motor shaft of the motorcycle; c. an elastic element having a portion arranged to contrast against a fixed abutment rigidly connected to the hub; characterized in that the hub includes: - a plurality of projecting protrusions substantially elongated in a direction parallel to that of the hub rotation axis and rigidly connected to the fixed abutment, each protrusion comprising a respective shaped side (11; 41) coupled with relative portions of the shaped profile of each driven disc, and at least a first guide portion (13; 22, 23, 25) facing in use to the driven discs having a cross section spaced from the rotation axis and defining, with a corresponding second guiding portion (13; 22, 23, 25) of an adjacent protrusion, radial openings for the passage of lubricating oil; the hub defines a plurality of axial openings arranged on the opposite side of the fixed abutment; the elastic element is a washer spring. a. a hub configured to be connected in rotation to a main shaft of a motorcycle gearbox; b. a plurality of driven discs each defining a radially internal shaped profile and such as to couple in a substantially rigid manner to rotation and free to translation parallel to an axis of rotation of the hub, the driven discs being suitable to cooperate in use with a plurality of friction discs connected by means of a clutch basket to a motor shaft of the motorcycle; c. an elastic element having a portion arranged to contrast against a fixed abutment rigidly connected to the hub; characterized in that the hub includes: - a plurality of projecting protrusions substantially elongated in a direction parallel to that of the hub rotation axis and rigidly connected to the fixed abutment, each protrusion comprising a respective shaped side (11; 41) coupled with relative portions of the shaped profile of each driven disc, and at least a first guide portion (13; 22, 23, 25) facing in use to the driven discs having a cross section spaced from the rotation axis and defining, with a corresponding second guiding portion (13; 22, 23, 25) of an adjacent protrusion, radial openings for the passage of lubricating oil; the hub defines a plurality of axial openings arranged on the opposite side of the fixed abutment; the elastic element is a washer spring. - a plurality of projecting protrusions substantially elongated in a direction parallel to that of the hub rotation axis and rigidly connected to the fixed abutment, each protrusion comprising a respective shaped side (11; 41) coupled with relative portions of the shaped profile of each driven disc, and at least a first guide portion (13; 22, 23, 25) facing in use to the driven discs having a cross section spaced from the rotation axis and defining, with a corresponding second guiding portion (13; 22, 23, 25) of an adjacent protrusion, radial openings for the passage of lubricating oil; the hub defines a plurality of axial openings arranged on the opposite side of the fixed abutment; the elastic element is a washer spring. the hub defines a plurality of axial openings arranged on the opposite side of the fixed abutment; the elastic element is a washer spring.