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		| Originally posted by '00EX5-turbo all they said was becuz my springs and shocks were too soft(i was using tokico plus h&r spring before i got tein)(my car was/and now 2" low). and plus, after i installed the sway bar it started making noises(metal hitting sound), so i cant use it anymore.
 
 oh, i just got my si rear sway bar today. but it looks sorry compare to the skunk2 bar though(13mm vs. 22mm?). but i think it's ok becuz i'll overcome it by adjusting the shocks.
 
 but i still want to know why?
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If you think about it really hard, it's because all the "load" will be transferred from your springs/shocks to your anti-sway bar.  How does an anti-sway bar work, though?  It keeps the control arms from moving.  And how does it make sure the control arms have a hell of a time moving?  It bolts to the LCA's and also to your subframe.  When all the load's transferred to your rear anti-sway bar then, the subframe will tear.  Thick anti-sway bars are notorious for that.