Cusco 666 541 A Rear Type-OS Strut Tower Brace for 2002-07 Subaru WRX/STI

Vehicle Fitment

• 2002-2007 Subaru Impreza WRX (GDA/GDB; AWD)
• 2004-2007 Subaru Impreza WRX STI (GDA/GDB; AWD)

Features

• Cusco Type-OS rear strut tower brace for improved chassis rigidity
• Oval aluminum bar for lightweight strength and reduced flex
• Blue powder-coated steel end brackets for durability and visual style
• Direct bolt-on design for rear shock tower mounting points
• Helps maintain suspension geometry under cornering loads
• Reduces body flex and improves handling precision
• Boosts driver confidence at higher speeds and during aggressive driving
• Easy installation with included hardware and tools

Specifications

• Part Number: 666 541 A
• Product Type: Rear Type-OS Strut Tower Brace
• Material: Aluminum bar with steel end brackets
• Bar Shape: Oval-shaft design
• Finish: Polished aluminum center bar with Cusco blue brackets
• Fitment: Rear strut towers on specified Subaru Impreza models
• Installation: Bolt-on using factory mounting points
• Origin: Made in Japan with motorsport-derived engineering

Included Components

• 1x Cusco Type-OS rear strut tower brace (666 541 A)
• 1x Set of mounting hardware
• Printed installation instructions

Product Description

The **Cusco 666 541 A Rear Type-OS Strut Tower Brace** is a performance suspension upgrade designed specifically for **2002-2007 Subaru Impreza WRX** and **2004-2007 WRX STI** models. Engineered to connect the rear shock towers, this Type-OS (Oval Shaft) brace reduces chassis flex under cornering and helps maintain proper rear suspension geometry - resulting in more confident handling, improved stability, and a more responsive feel during spirited driving and performance use.

Crafted from a lightweight aluminum oval bar and finished with Cusco's signature blue steel end brackets, the 666 541 A installs with included hardware and does not require extensive modifications. It's a popular choice for enthusiasts upgrading stock handling characteristics without adding significant weight, and it complements other performance suspension components to enhance the vehicle's dynamic behavior. Whether you're driving on winding back roads or tracking your WRX/STI, this brace supports a firmer chassis and improved rear grip response.