Motorcycle, vehicle and radiator cover

A motorcycle (1) comprising a frame (3) forming part of a motorcycle body, a unit swing engine (11) pivotally attached to the frame (3) and a radiator (23) for cooling the unit swing engine (11). The radiator (23) is disposed laterally of the unit swing engine (11). The motorcycle (1) also comprises a radiator cover (26) disposed so as to cover the lateral outside of the radiator (23), a hose (24) having one end connected to the radiator (23) and a recovery tank (25) to which the other end of the (24) is connected. The radiator cover (26) has an air inlet (26e) that is open in a direction tilted toward the forward side of the motorcycle (1) at a predetermined angle with respect to the motorcycle width direction, and wherein a plurality of fins (26h) are arranged in the air inlet (26e) of the radiator cover (26).