To prevent adhesion of paint to a bearing surface with a simple structure at a low cost.

In this vehicle body frame for a motorcycle, a frame journaling a member to shaft holes 31, 32 through bearings 50, 51 is formed by casting, and is coated with the paint. The bearing surfaces 31a, 32a of the shaft holes 31, 32 for press-fitting the bearings 50, 51 are machined, inner faces 31b, 32b inside the bearing surfaces 31a, 32a of the shaft holes 31, 32 are machined. The bearing surfaces 31a, 32a, and the inner faces 31b, 32b are masked so as to be paintable.