To provide a body frame structure for a motorcycle whereby a distance between an exhaust pipe and a front wheel is secured, the arrangement of a radiation member such as a radiator or an oil cooler and other auxiliary machinery parts is facilitated, the capacity of the radiation member is enlarged, radiation efficiency is enhanced, and a freedom degree of design such as a shape or arrangement of a body frame and the exhaust pipe can be enhanced.

An engine equipped with exhaust pipes 35 to 38 extending to a front lower part is mounted on the body frame 11, and a pair of right and left down tubes 94 are extended almost downward from a head pipe provided on the front end of the vehicle body frame 11. A first cross member 107 for connecting the right and left down tubes 94 are provided on the body frame 11, and an arc shaped recessed part 107a through which a part of the exhaust pipes 36 and 37 is inserted is provided on the first cross member 107.

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