A shim for a track roller frame is provided. The shim includes a first surface and a second surface. The first surface and the second surface are laterally spaced apart from each other. The first surface and the second surface define a thickness of the shim therebetween. The shim further includes a retention element formed on it. The retention element is configured to position the shim on the track roller frame. The retention element is also configured to restrict a movement of the shim relative to the track roller frame. The retention element is further configured to couple the shim to the track roller frame.