A weightlifting system includes a weight bar first frame member that extends along a longitudinal axis. The first frame member includes a front face, a first side face, a second side face and a multiple of opposed pairs of openings disposed along the longitudinal axis. Each of the multiple of opposed pairs of openings are generally L-shaped and include a first opening and a second opening. A weightlifting weight arm system includes a weight horn and a bracket assembly that is engageable with at least two opposed pairs of openings of the multiple of opposed pairs of openings.