A main body frame for an electric motorcycle, comprising: a front fork support member with a front fork through hole for loading a pivot stem of a front fork, the front fork through hole having a pivotal axis arranged in a central plane of the main body frame; a right and a left frame part (102, 105) arranged on opposite sides of the central plane of the main body frame, each having an elongated shape and being formed of an upper part (102a, 102b) and a lower part (102c, 102d), respectively at different sides of an elongation direction changing portion, and a first buffer member attached, at opposite sides thereof, to the right and the left frame part, and crossing the central plane, wherein starting from the respective elongation direction changing portions thereof, the upper parts of the left and the right frame part extend inwardly towards the central plane so as to embrace the front fork support member, and are attached to opposite sides of the front fork support member, the elongation direction changing portions are bends of the right and the left frame part (102, 105), characterized in that a largest width of the main body frame in a width direction perpendicular to the central plane is 10 cm or between 10 cm and 30 cm or 30 cm, the lower parts of the right and the left frame part (102, 105) are inclined in a downward direction with respect to the elongation direction of the upper parts of the left and the right frame part, different from the width direction, whereby a concave area for a battery unit is formed below the upper and lower parts of the left and right frame parts (102, 105), and the main body frame further comprises a central frame part arranged in the central plane of the main body frame and having a recessed portion for mounting the battery unit below the left and right frame parts, wherein the central frame part is attached to at least one of the members (101, 115, 119, 120, 121) of the main body frame. a front fork support member with a front fork through hole for loading a pivot stem of a front fork, the front fork through hole having a pivotal axis arranged in a central plane of the main body frame; a right and a left frame part (102, 105) arranged on opposite sides of the central plane of the main body frame, each having an elongated shape and being formed of an upper part (102a, 102b) and a lower part (102c, 102d), respectively at different sides of an elongation direction changing portion, and a first buffer member attached, at opposite sides thereof, to the right and the left frame part, and crossing the central plane, wherein starting from the respective elongation direction changing portions thereof, the upper parts of the left and the right frame part extend inwardly towards the central plane so as to embrace the front fork support member, and are attached to opposite sides of the front fork support member, the elongation direction changing portions are bends of the right and the left frame part (102, 105), characterized in that a largest width of the main body frame in a width direction perpendicular to the central plane is 10 cm or between 10 cm and 30 cm or 30 cm, the lower parts of the right and the left frame part (102, 105) are inclined in a downward direction with respect to the elongation direction of the upper parts of the left and the right frame part, different from the width direction, whereby a concave area for a battery unit is formed below the upper and lower parts of the left and right frame parts (102, 105), and the main body frame further comprises a central frame part arranged in the central plane of the main body frame and having a recessed portion for mounting the battery unit below the left and right frame parts, wherein the central frame part is attached to at least one of the members (101, 115, 119, 120, 121) of the main body frame.