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PERRIN PSRS for Subaru 2002-2007 WRX / 2004-2007 STI w/Urethane Bushings
Lease for as low as $/week
Improve turn-in and increase handling prowess with the PERRIN Positive Steering Response System.
*What is the PSRS?* P.S.R.S stands for Positive Steering Response System and 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.
*OEM Bushings- Bad* Under braking and acceleration, the OEM bushing can flex enough for your wheel to move back and forth .500"! This deflection of the wheel causes drastic toe in and toe out changes under braking. The toe changes will cause steering wandering and an altered tire contact patch. When accelerating, this OEM bushing causes unwanted wheel hop and the car will want to follow the ruts in the road.
*PERRIN PSRS- Good* 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.
*Adds Caster* 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.
*"Anti-Lift" Reduction Feature* A byproduct of the PSRS kit is that it reduces some of the built in "anti-lift" that Subaru builds into the suspension geometry. Changing the geometry toward a Pro-Lift setup which means there is more weight transfer happening under acceleration and deceleration. During acceleration this helps transfer weight to the rear of the car creating additional traction for the front tires, which reduces understeer. Same thing happens under braking.
*Bushings* The PERRIN PSRS features custom made Delrin Bushings. Delrin is an engineered thermoplastic with a high stiffness, low friction and excellent dimensional stability. Delrin holds it's shape, won't wear out and can be machined to very low tolerances, For those wanting something in between the rock solid connection, and the super soft OEM Bushings, the Urethane Bushing upgrade is a great alternative. These are simple replacements for the Delrin Bushing we normally supply. They provide a slightly softer ride compared to the Delrin, and transmit slightly less noise through the chassis.
*Grease Fittings* The PSRS uses Zerk grease fittings to feed lubricant to the joint without the need to disassemble the PSRS. Grab your grease gun, and grease away!
Fitment-
1993-2001 Impreza
2002-2007 WRX
2004-2007 STI
*Pictures used for marketing purposes only, actual product may vary
Returns may be accepted within 14 days of purchase pending Return Merchandise Authorization (RMA). No returns or cancellations on special order items. All returns will be charged a 20% restocking fee, no exceptions.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging. Item must be able to be resold as new.
Several types of goods are exempt from being returned. Hazardous materials, fluids, greases, chemicals, and clothing are not able to return.
Free shipping is available within the lower 48 states for most orders totaling $199 or more. A free shipping option will be available during checkout. This offer is for delivery address in the continental United States and excludes shipments going to Alaska, Hawaii, Military Boxes, and items that require freight shipping.
Processing Time
Patterson Performance stocks a large quantity of items at any given time. Some items may require drop shipping from one of our various distributors. In stock items will ship within 1-2 business days. If you're needing your product quickly, please contact us to verify product availability before placing your order. Orders requiring additional verification (security concerns, incorrect information, etc.) may need additional processing time. Estimated shipping dates are not guaranteed and are subject to change based on inventory levels and manufacturer lead times. Backordered items are shipped immediately once available.
Items ship daily, If the item you ordered is not in stock, a member of our team will contact you via email / phone.
Patterson Performance will only ship to an address that varies from your billing address if payment is made via Paypal or a financing partner.
Patterson Performance ships from multiple warehouses throughout the United States, and sometimes from manufacturers overseas.
You can simply contact us via email / telephone for a live inventory check
Find more information at www.P65Warnings.ca.gov.
