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Message: <blockquote data-quote="Paul" data-source="post: 347849" data-attributes="member: 9404">It's not really the LCA or the bushings - the entire setup is wrong. The upper control arms are trying to simultaneously locate the axle laterally within the chassis while preventing axle windup. It just doesn't work. This is why three-links are so much more effective. You lower control arms locate the axle longitudinally in the car (along with the upper control arm), the panhard bar or watts link locates the axle laterally, the upper control arm determines pinion angle, and a proper swaybar doesn't attach to the LCAs, but should attach to both the axle and the chassis.Either way, it is simple to produce, and reasonably effective in most applications. It's just simply not designed to be pushed to the limit in road racing applications.Paul.</blockquote>