A radiator grille is provided between the radiator and the front fender without elongating the wheel base of the motorcycle. The radiator grille includes a plurality of vertically long louvers. The forward projecting distance of the louvers is shorter for louvers near the body center and longer for louvers further away from the body center. As a result, the forward ends of the louvers are located outside the rotation locus inscribed by the rear of the front fender. Furthermore, the inclination angle formed between the louver and a vertical reference line is larger for outer louvers than for inner louvers.