Description

Cusco rear sway bar designed for the 2022+ Subaru WRX chassis, built to significantly improve handling balance by reducing body roll and increasing rear stability during cornering.

By upgrading from the factory rear sway bar to a larger 21mm solid steel unit, this bar increases rear roll stiffness and helps the car rotate more predictably. The result is flatter cornering, improved grip balance, and a more responsive chassis feel—especially noticeable during spirited driving or track use.

Key Features

• 21mm Solid Construction – Significantly stiffer than OEM rear bar (~19mm)
• Reduces Body Roll – Keeps the chassis flatter through corners
• Improves Corner Exit Stability – More predictable rear grip behavior
• Includes Bushings & Hardware – Direct bolt-on installation
• Street-Friendly Tuning – Increased performance without harsh ride quality changes

Performance Benefits

• More neutral handling balance (reduces factory understeer tendency)
• Sharper turn-in and better rotation
• Improved high-speed lane change stability
• Better overall chassis composure when combined with a front sway bar upgrade

This part is especially effective when paired with:

• Lowering springs or coilovers
• Adjustable end links
• Front sway bar upgrades for balanced setup

Fitment

• 2022–2026 Subaru WRX (VB chassis)
• Fits all trims, including WRX GT
• Direct replacement using factory mounting points