Cusco Knuckle Rear Bushings

2011–2025 Subaru Impreza WRX (GC8/GDB) 2.0L Turbo

Part #: 660 464 NV

Overview

The Cusco Knuckle Rear Bushings are designed to enhance the handling and stability of your Subaru Impreza WRX, particularly for enthusiasts who demand precise steering and cornering performance. These high-quality pillow ball bushings replace the factory rubber components in the rear suspension knuckles, providing a more direct connection between the suspension and chassis. By reducing unwanted movement and flex, you'll experience improved steering response, better feedback, and enhanced overall driving dynamics.

Ideal for spirited street driving, track days, or competitive racing, these bushings help support your vehicle's suspension integrity under load. They are engineered to withstand the rigors of aggressive driving while maintaining durability and reliability. With Cusco's reputation for precision and quality, these rear knuckle bushings are a valuable upgrade for Subaru WRX owners looking to maximize their vehicle's performance and handling characteristics.

Key Features

These Cusco pillow ball bushings are crafted from high-precision pillow balls that are commonly used in racing applications, ensuring maximum strength and minimal deflection. The pillow ball design eliminates compression and flex, allowing your suspension to perform at its peak during aggressive cornering and straight-line stability. The bushings are housed in a durable, lightweight aluminum casing that resists corrosion and maintains structural integrity over time.

• High-precision pillow balls for maximum rigidity and responsiveness
• Constructed with durable aluminum housing for longevity and corrosion resistance
• Designed to reduce alignment changes caused by suspension flex
• Enhances steering response and cornering accuracy
• Supports improved straight-line stability during high-speed driving
• Includes rubber boots to protect against dirt, dust, and debris, ensuring long-lasting performance
• Engineered specifically for the Subaru Impreza WRX (GC8/GDB models)
• Suitable for both street and track use, providing a balance of performance and durability

Construction & Design

The Cusco rear knuckle bushings feature a robust pillow ball design made from high-precision steel, offering superior strength compared to traditional rubber or polyurethane bushings. The pillow balls are housed within a lightweight aluminum casing, which not only reduces weight but also enhances heat dissipation and corrosion resistance. Rubber boots are included to shield the pillow balls from dirt, mud, and other contaminants, helping to maintain smooth operation and extend service life.

The design focuses on minimizing compliance and flex within the suspension, translating to more predictable handling and sharper steering feel. These bushings are manufactured with tight tolerances and precision engineering, ensuring a perfect fit and seamless integration with your vehicle's suspension components. The result is a suspension upgrade that delivers consistent performance, improved feedback, and a more connected driving experience.

Performance & Sound

By replacing the factory rubber bushings with Cusco's pillow ball design, you'll notice a more direct and responsive steering feel. The increased rigidity reduces unwanted movement in the rear suspension, translating to better cornering grip and stability at high speeds. While these bushings do not significantly alter the sound of your vehicle, the improved suspension response can contribute to a more engaging driving experience overall.

Installation & Fitment

The Cusco Knuckle Rear Bushings are designed as a bolt-on upgrade, making installation straightforward for those with basic mechanical skills. No cutting, drilling, or extensive modifications are required. It is recommended to follow proper suspension alignment procedures after installation to ensure optimal handling and tire wear. The bushings fit directly into the rear knuckles of the Subaru Impreza WRX (GC8/GDB models), providing a secure and precise upgrade.

• Easy bolt-on installation with standard tools
• No cutting or drilling required
• Recommended to perform a wheel alignment after installation for best results

What's Included

• Pair of Cusco Pillow Ball Rear Bushings
• Rubber boots for protection against dirt and debris
• Installation hardware and instructions

Ideal For

Performance enthusiasts seeking sharper handling and improved steering response in their Subaru Impreza WRX. Suitable for street drivers, track day enthusiasts, and racers who want to maximize suspension performance and cornering precision. These bushings are an excellent upgrade for those looking to reduce suspension flex and achieve more accurate alignment during aggressive driving.

Emissions Note

This product is designed for off-road or racing use only and may not be legal for use on public roads in all jurisdictions. Please check local regulations before installation.