Patent ID: 7318592

Claim:
A motorcycle steering damper in which the interior of a cylinder is divided into two oil chambers by a piston that slides in the cylinder as a steering operation takes place, and a passageway for providing a communication between the two oil chambers is provided in a portion other than the piston, the motorcycle steering damper being characterized in that a subsidiary chamber is defined at an intermediate position along the length of the passageway, and in that a check ball is provided in the subsidiary chamber, the check ball is adapted to move so as to reduce the cross-sectional area of the passageway when a steering speed exceeds a predetermined value and a differential pressure between the two oil chambers reaches or exceeds a certain value; and a magnet is provided which holds the check ball at a neutral position where the passageway is not closed by the check ball in a state in which the differential pressure is smaller than the certain value.