On the 2008-2014 STi there is no mechanism for adjusting rear camber.

Whiteline has solved this problem with the KCA326. These unique bushings replace the stock units in the upper control arm. How they achieve adjustment is through an off-center bored crush tube. By doing this they essentially have created a cam inside the bushing.

This “cam” is good for about +/- .75* of adjustment when compared to the stock set up.

Whiteline adjustable camber kits provide the ability to fine tune camber settings for optimum tyre contact resulting in improved vehicle handling and increased tyre life. The kit includes low compliance synthetic elastomer bushings which help maintain preferred alignment settings as well as providing enhanced steering response.