A motorcycle includes a guard frame provided near an upper portion of a vehicle body of the motorcycle that is arranged to reduce or prevent damage to the components of the motorcycle in the event of an overturn of the motorcycle. The guard frame includes a pair of guard frame rails, each rail extending in a longitudinal direction of the vehicle body. A connecting portion connects the rear end portions of the rails. The front end portion of each rail is fixed to a body frame of the motorcycle. The connecting portion is supported by the body frame for pivotal movement about a pivot axis. The rails have a normal bow shape that projects outwardly. In some arrangements, an intermediate portion of each rail is formed of a material having lower rigidity than a material of the front and rear end portions of the rail.