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  • Perrin Positive Steering Response System | 06-07 Subaru WRX / 04-07 STI (PSP-SUS-403)
  • Perrin Positive Steering Response System | 06-07 Subaru WRX / 04-07 STI (PSP-SUS-403)
  • Perrin Positive Steering Response System | 06-07 Subaru WRX / 04-07 STI (PSP-SUS-403)
  • Perrin Positive Steering Response System | 06-07 Subaru WRX / 04-07 STI (PSP-SUS-403)
  • Perrin Positive Steering Response System | 06-07 Subaru WRX / 04-07 STI (PSP-SUS-403)
  • Perrin Positive Steering Response System | 06-07 Subaru WRX / 04-07 STI (PSP-SUS-403)

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    Perrin Performance

    Perrin Positive Steering Response System | 06-07 Subaru WRX / 04-07 STI

    PART# PER PSP-SUS-403
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    Email - sales@maperformance.com
    Phone 1(888)627-3736



    $ 211.50   $ 235.00
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    2006-2007 WRX / 2004-2007 STI Positive Steering Response System by Perrin

    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.

    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.

    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 approximately 0.5 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.

    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.

    Features

    • Replaces the super soft OEM front control arm rear bushings
    • Provides significant improvement in how the car steers during hard cornering and even in a straight line
    • Adds approximately 0.5 degrees of caster to the front suspension
    • Helps transfer weight to the rear of the car creating additional traction
    • High quality, 95a durometer polyurethane bushings
    • Uses Zerk grease fittings to feed lubricant to the joint without the need to disassemble

    Applications

    • 2006 - 2007 Subaru WRX
    • 2004 - 2007 Subaru STI

    Benefits

    • Improves Handling
    • Reduces Understeer
    • Eliminates Feedback Issues
    • Increases Front-End Traction

    What's In The Box?

    • 1 - Set of PERRIN PSRS bodies
    • 1 - Silicone-based grease packet
    • All necessary hardware
    • Warranty
    • Instructions
    • Stickers

    References

    Warranty

    • PERRIN Performance warrants that this product will be free from defects in material and workmanship within a 5-year period from the date of purchase.

    2006-2007 WRX / 2004-2007 STI Positive Steering Response System by Perrin

    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.

    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.

    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 approximately 0.5 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.

    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.

    Features

    • Replaces the super soft OEM front control arm rear bushings
    • Provides significant improvement in how the car steers during hard cornering and even in a straight line
    • Adds approximately 0.5 degrees of caster to the front suspension
    • Helps transfer weight to the rear of the car creating additional traction
    • High quality, 95a durometer polyurethane bushings
    • Uses Zerk grease fittings to feed lubricant to the joint without the need to disassemble

    Applications

    • 2006 - 2007 Subaru WRX
    • 2004 - 2007 Subaru STI

    Benefits

    • Improves Handling
    • Reduces Understeer
    • Eliminates Feedback Issues
    • Increases Front-End Traction

    What's In The Box?

    • 1 - Set of PERRIN PSRS bodies
    • 1 - Silicone-based grease packet
    • All necessary hardware
    • Warranty
    • Instructions
    • Stickers

    References

    Warranty

    • PERRIN Performance warrants that this product will be free from defects in material and workmanship within a 5-year period from the date of purchase.

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    MAP Limited Lifetime Warranty

    1.) All MAPerformance in-house fabricated parts include a Limited Lifetime Warranty for the Original Purchaser. This warranty only applies to the original purchaser and is non-transferrable. If the product fails it would need to be determined by MAPerformance that it is due to manufacturing defects in materials or workmanship.

    2.) This does not cover normal wear and tear. Improper use, modification, or abuse voids this warranty. MAPerformance will not be held responsible for additional costs due to the failure of a product (cost of sale, towing, labor, etc.). Warranty claims must be submitted to MAPerformance for review.

    3.) You must create a support ticket to acquire your return authorization number prior to returning the product.

    4.) Warranty claims will not be honored if the product was not purchased through an approved dealer.

    For warranty evaluation please create a support ticket via this form here.

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