Perrin Positive Steering Response Kit for 03-06 Mitsubishi Evolution 8 & 9

The Perrin PSRS kit with caster adjustment provides a solid bushing but relocates the OEM control arm to subframe mounting point to be off center. The non-concentric hole allows your (or your installer or alignment specialist) to rotate the bushing to adjust your Evo's caster (some racing classes do not allow for an offset bushing, refer to your organization's rules for legality). The adjustable Perrin Evo PSRS can provide nearly 1.5 degrees of additional caster to your Evolution.

Perrin's Evo PSRS Zero kit provides a solid bushing and maintains the OEM bushing's centered control arm to subframe mounting point. This centered hole keeps caster at factory settings, which is required for some racing classes (refer to your organization's rules to determine if bushing that offer caster adjustments are permitted).The Perrin PSRS Zero kit might be a better fit, and reduce rubbing if you are running aggressive (larger) wheel fitments.