Description
The 2011+ Subaru STI PERRIN Positive Steering Response System simply replaces the front control arm, rear bushings. The OEM bushings are designed to be extra compliant to reduce NVH, and make the ride more comfortable. The compliancy of this bushing is not something a performance oriented driver is looking for. Eliminating the OEM super soft bushing provides significant improvement in how the car steers during hard cornering and even in a straight line. After the PERRIN PSRS is installed, under braking the wheel will have zero deflection. Since there is no way for toe changes to occur, the steering feedback issues and wandering under braking disappears. Under acceleration the car will have far less tendency to follow the ruts in the road, wheel hop will be eliminated and in turn the car will have more front end traction. The bushing in the PSRS is purposely offset from center-line. This adds almost 0.6 degrees of caster to the front suspension. Caster is the angle on which the steering knuckle rotates. Adding caster makes the car turn in faster by providing a larger contact patch as the wheels turn on the steering axis.
- 2011+ Subaru STI PERRIN Positive Steering Response System
- Improve turn-in and increase handling
- Available with offset and without offset
- Includes 5 year warrenty