the fronts are just a cam bolt that is used in place of one of the pinch bolts on each front strut. The rear camber adjusters replace the entire upper link and thusly the larger cost. I have seen several of the el-cheapo rear camber arms snap like pretzels, do not go cheap as they are subjected to alot of stress. Make sure to use alot of antisieze on the threads and coupler and lock nuts, and when I say alot, I mean ALOT ! ! !
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