Cusco 6A1 492 RL Rear Lateral Sway Bar Brace for 15-21 Subaru WRX/STI

Vehicle Fitment

• 2015-2021 Subaru WRX (VA, AWD)
• 2015-2021 Subaru WRX STI (VA, AWD)

Features

• Rear lateral sway bar reinforcement brace designed to stiffen rear sway bar mounts
• Reduces mount torquing and unwanted movement under load
• Improves rear suspension stability and handling response
• Lightweight aluminum construction with powder-coated finish
• Direct bolt-on installation requires no major modifications
• Works with stock or aftermarket rear sway bars
• Enhances chassis rigidity for spirited driving and track use
• Precision-engineered for exact vehicle-specific fit

Specifications

• Brand: Cusco
• Part Number: 6A1 492 RL
• Position: Rear lateral sway bar brace
• Material: High-strength aluminum
• Finish: Powder-coated (Cusco blue)
• Installation: Bolt-on reinforcement
• Compatibility: Works with OEM or aftermarket sway bars
• Drivetrain: AWD

Included Components

• 1x Cusco Rear Lateral Sway Bar Brace
• 1x Vehicle-specific mounting hardware kit

Product Description

The Cusco 6A1 492 RL Rear Lateral Sway Bar Brace is engineered to reinforce the rear sway bar mounting area on select Subaru WRX and WRX STI models from 2015-2021. This brace enhances chassis stiffness by reducing unwanted movement at the sway bar mounts, helping maintain optimal suspension geometry during spirited driving or track use. It is particularly useful for drivers who have upgraded to stiffer aftermarket sway bars or are seeking more consistent rear handling response.

Constructed from lightweight aluminum with a durable powder-coated finish, this brace installs easily using existing mounting points. It is designed to work seamlessly with both stock and aftermarket rear sway bars, providing improved stability and feedback without compromising ride quality. The Cusco reinforcement brace offers a straightforward way to boost rear end control and confidence during aggressive driving conditions.