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25mm Front Sway Bar Adjustable for 2002-07 WRX/STI


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WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

Was: $234.00
Sale: $210.60
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Save: $23.40


Front Sway Bar

Take your vehicles handling to the next level with PERRIN Performance sway bars. Upgrading your sway bar is the easiest way to improve vehicle handing. Sway bars increase roll resistance and modify vehicle balance. In general, adding a larger rear sway bar increases over steer, and adding a larger front sway bar increases under steer. Upgrade both front and rear sway bars to reduce body roll and tune vehicle balance to your preference.

25mm Front Sway Bar

The PERRIN Performance front sway bar is a 25mm solid bar for extreme durability and strength. Driving enthusiast will enjoy the feel of the 25mm sway bar for it's rigidity and improvement in performance driving.


PERRIN Performance sway bars incorporate multiple end link mounting holes which allow the installer to custom tailor your driving experience. This PERRIN sway bar increase stiffness by a minimum of 50% overstock. Adjusting the end link mounting position on this sway bar can increase that stiffness to as much at 215% over stock.

Centering Rings

Perrin Performance sway bars feature centering rings that prevent sway bar movement in hard cornering. This keeps your sway bar centered and ready for the next corner.


PERRIN sway bars are CNC precision bent from solid 4130 chromoly steel. The entire bar is heavily powder coated to fight corrosion and give it a great red finish. We laser cut and MIG weld our bar ends for precise placement and superior strength. This type of bar end will never fail and offer you a lifetime of superior handling.


All PERRIN sway bars include custom polyurethane bushings for a crisp response and better turn in. Special spiral cut pockets carved into the bushing surface extends the interval between re-greasing.


A sway bar is an automobile suspension device. It connects opposite (left/right) wheels together through short lever arms linked by a torsion spring. A sway bar increases the suspension's roll stiffness—its resistance to roll in turns, independent of its spring rate in the vertical direction.
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5 Year Warranty

PERRIN Performance warrants to the original purchaser that all PERRIN products will be free from defects in material and workmanship within a sixty (60) month period from the date of purchase. *Some exclusions apply
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Warranty Details

This product features a 5 year warranty Read Full Warranty

Tech Department




2002-2007 WRX / STI

PERRIN 25mm Bar Hole #1 160% Stiffer than 20mm OEM Bar
PERRIN 25mm Bar Hole #2 215% Stiffer than 20mm OEM Bar

Compatibility Detail


2002-2007 WRX Sedan & Wagon Yes
2004-2007 STI Yes
2004-2008 Forester XT Yes

In The Box

In The Box

(1) PERRIN front sway bar
(2) Sway bar bushings
(1) Silicone-based grease packet
(1) PERRIN License Plate Frame


Shipping Information

  • Item Requires Shipping
  • 15.0 lbs.
  • W7.0000” x H10.0000” x L49.0000”
  • This item ships in its own box.