Cusco 6A9 311 B21 21mm Rear Sway Bar for 22-25 Subaru WRX VB AWD

Vehicle Fitment

• 2022-2025 Subaru WRX (VB, AWD, FA24T 2.4L Turbo)

Features

• Rear anti-roll (sway) bar designed to reduce body roll during cornering
• Solid 21 mm diameter for increased stiffness compared to factory bar
• Improves rear suspension response and overall handling balance
• Includes high-quality bushings for secure mounting
• Powder-coated finish for corrosion resistance and long life
• Direct bolt-on replacement using factory mounting points
• Enhances stability during high-speed maneuvers and spirited driving
• Engineered specifically for VB-series WRX chassis dynamics

Specifications

• Brand: Cusco
• Part Number: 6A9 311 B21
• Position: Rear anti-roll (sway) bar
• Material: High-strength steel
• Bar Diameter: 21 mm solid
• Finish: Powder-coated
• Includes: Rear sway bar bushings
• Drivetrain Compatibility: AWD

Included Components

• 1x Cusco 21 mm Rear Sway Bar
• 1x Set of rear sway bar bushings

Product Description

The Cusco 6A9 311 B21 Rear Sway Bar is a performance suspension upgrade designed for the 2022-2025 Subaru WRX VB platform. With a solid 21 mm diameter - approximately 33% thicker than the standard 19 mm OEM bar - this rear sway bar significantly increases torsional stiffness. The result is reduced body roll, sharper cornering response, and improved stability during dynamic driving conditions.

Built from high-strength steel and finished with a durable powder coat, this bar installs easily using your vehicle's existing rear sway bar mounting points. The included bushings ensure a tight, secure fit that enhances performance and longevity. Whether you're driving on the street or pushing your WRX on a track, the Cusco rear sway bar helps maintain balanced chassis dynamics and improved control, making it an excellent upgrade for enthusiasts focused on handling performance.