I have shopped with the RSX store twice now, both times my product has been delivered in a timely manner, which is great. The last time I ordered through the RSX store I received a damaged item that must have been damaged during the shipping...
...Like any spherical bearing that is to be used in a suspension system, the reason is to eliminate deflection...Rubber or urethane bushings will deflect (compress) under load leading to unwanted camber and toe...