Introducing the ZERO PSRS! A small twist on a great long standing PERRIN part with many of the same benifits, but much easier installation! Like Perrin's other PSRS designs, you get complete control of your Subarus front end. By removing the soft and sloppy rubber bushing you increase steering response while braking and accelerating. The PERRIN Performance PSRS replaces the front lower control arm mounts with a solid connection using a teflon lined sphearical bearing. Getting rid of this overly compliant bushing (AKA the Tennis Ball), gets rid of "wandering" over ruts in the road, and strange steering feedback under heaving braking and accelerating. The difference in the new ZERO model is there is NO offset to the bearing/pivot point. What this means is you get all the benifits of the solid type connection, with no need to get an alignment. This saves $100-$200 in installation cost and makes for overall install time to be cut in half. If you are looking for these benifits along with adding some additional caster to your front end, you may consider Perrin's normal PSRS for your 08+ WRX/STI or 05+ Legacy.
