A weightlifting system includes a weight arm system which may include various arm systems such as an incline arm system or a decline arm system. The weight arm system includes a weight arm mounted to a bracket assembly through an omni directional pivot system to permit the weight arm to pivot about a first axis and a second axis. The first axis is defined along the length of the bracket assembly while the second axis is transverse thereto. The combination of the movement about the first and second axis relative the bracket assembly permits the novel omni directional movement.