Subaru WRX Sway Bar - Rear - Perrin Performance - 16mm Adjustable - `08-`21. This rear 16mm adjustable sway bar from PERRIN is designed to give WRX owners clearer rear-end response and the ability to fine-tune roll stiffness for road or track use.

Designed for 2008–2021 Subaru WRX models, this adjustable rear bar replaces the stock unit to reduce body roll and improve balance during cornering. The 16mm diameter offers a noticeable step in lateral stability while the adjustable end-link positions let you dial in rear roll resistance to suit driving style or setup changes. It’s a popular upgrade for drivers who want predictable handling without major suspension changes.

Features

• Fits 2008–2021 Subaru WRX rear suspension
• 16mm adjustable diameter for tuning rear roll stiffness
• Multiple adjustment positions to fine-tune handling balance
• Direct-replacement design for straightforward installation

This sway bar is intended for enthusiasts seeking improved cornering behavior and better overall vehicle balance. Installation is a direct swap using the factory mounting points, and adjustments are simple to change as you refine your setup. It pairs well with upgraded front bars, shocks, or swaybar end-links for a more complete handling package.

If you have questions or want help choosing the right combination for your WRX, call us directly. We have two locations offering installation and customization services: Austin, Texas and the Los Angeles, California area. Call 512-982-9393 (TX) or 562-981-6800 (CA). If you are considering purchasing multiple items, contact us for shipping discounts. We install on premises at both locations.

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