Perrin Positive Steering Response Subaru WRX STI 08-12

Like PERRINs 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 wondering over ruts in the road, and strange steering feedback under heaving breaking and accelerating.

On the standard PSRS the bearing/pivot point which provides roughly 3 degress more caster to your front end is offset. This added caster makes the car feel like it steers faster and provides more front end grip while cornering. The added benefits to the standard offset type PSRS are great, but do require a 4 wheel alignment after installation.