To facilitate assembly works by making it impossible to let the tip end at the one end side of each operating rod be inserted into a fluid passage in the axial direction.

The tip end 56 at the one end side of each operating rod 48 is not to be inserted into a fluid passage 45 in the axial direction of a fork tube 17. More practically, the one side of the tip end 56 is made larger in dimension than the width of the fluid passage 45 in a plane view. Besides, let the tip end 56 of each operating rod 48 abut against the end face 57 of a throttle valve 43. In this case, since the tip end 56 of each operating rod 48 is made impossible to be inserted into the fluid passage 45 of the throttle valve 43, the tip end 56 of each operating rod 48 is thereby prevented from being inserted into the fluid passage by mistake.