my pilot rear lower and upper bars are pretty stiff...they dont move whatsoever...my front is custom, but still... all they really do is stiffen the chassis....the handling still feels the same...just maybe not as "gooey". Also, if you have a stiffer suspension, strut bars have more of an effect because stiffer springs will cause the chassis to flex more....IMO, dont spend more than like 60 bucks on a bar.