A shower door hinge assembly includes a mount, an upper member, a lower member, a body, a plurality of gears, and a stop member. The mount is configured to be coupled to a fixed structure. The upper member is coupled to an upper portion of the mount, and the lower member is coupled to a lower portion of the mount. The body is rotatably coupled to the mount and is configured to be coupled to a pivotable shower door, wherein the body includes an inner wall having a plurality of splines defining a ring gear. The plurality of gears are disposed in the body and are configured to permit relative rotational movement between the body and the upper and lower members. The stop member is removably coupled between the inner wall of the body and one or more gears of the plurality of gears, and is configured to be selectively removed from, and repositioned within, the body to set a rotational endpoint for a pivotable shower door.