A shock absorber, comprising: a cylinder having an axis (CA) in axial direction; a piston , which is configured to partition an internal space of the cylinder into two oil chambers , and is capable of sliding in the axial direction of the cylinder , the piston having formed therethrough a communication path configured to bring the two oil chambers into communication with each other; a first rod , which extends in a first direction of the axial direction of the cylinder with respect to the piston ; a first rod guide , which is provided to the cylinder , and through which the first rod passes; a second rod , which has a diameter larger than a diameter of the first rod , and extends in a second direction of the axial direction of the cylinder , which is opposite to the first direction, with respect to the piston ; a second rod guide , which is provided to the cylinder , and through which the second rod passes; a pressurizing mechanism , which is configured to pressurize oil filling the internal space of the cylinder ; a rod mounting member , which is provided to the first rod outside of the cylinder ; a cylinder mounting member , which is provided to the cylinder outside of the cylinder ; a spring , which is configured to be expanded and contracted in accordance with relative movement between the rod mounting member and the cylinder mounting member , a cap member to be mounted to an end portion of a cylinder tube included in the cylinder , wherein the cylinder mounting member is provided to the cap member , characterized in that the cylinder mounting member is arranged so as to be offset from the axis (CA) of the cylinder , the cap member includes a cylinder portion configured to allow passage of the second rod therethrough, and the cylinder mounting member is provided on an outer side of the cylinder portion in a radial direction of the cylinder . a cylinder having an axis (CA) in axial direction; a piston , which is configured to partition an internal space of the cylinder into two oil chambers , and is capable of sliding in the axial direction of the cylinder , the piston having formed therethrough a communication path configured to bring the two oil chambers into communication with each other; a first rod , which extends in a first direction of the axial direction of the cylinder with respect to the piston ; a first rod guide , which is provided to the cylinder , and through which the first rod passes; a second rod , which has a diameter larger than a diameter of the first rod , and extends in a second direction of the axial direction of the cylinder , which is opposite to the first direction, with respect to the piston ; a second rod guide , which is provided to the cylinder , and through which the second rod passes; a pressurizing mechanism , which is configured to pressurize oil filling the internal space of the cylinder ; a rod mounting member , which is provided to the first rod outside of the cylinder ; a cylinder mounting member , which is provided to the cylinder outside of the cylinder ; a spring , which is configured to be expanded and contracted in accordance with relative movement between the rod mounting member and the cylinder mounting member , a cap member to be mounted to an end portion of a cylinder tube included in the cylinder , wherein the cylinder mounting member is provided to the cap member , characterized in that the cylinder mounting member is arranged so as to be offset from the axis (CA) of the cylinder , the cap member includes a cylinder portion configured to allow passage of the second rod therethrough, and the cylinder mounting member is provided on an outer side of the cylinder portion in a radial direction of the cylinder . <EOS>