Cusco Lower Arm Bar Ver.2 Rear

Subaru Legacy B4 / Legacy (BE5/BH5) 1998–2003

Part #: 680 478 A

Overview

The Cusco Lower Arm Bar Ver.2 Rear is a high-performance suspension component designed specifically for Subaru Legacy B4 and Legacy models from 1998 to 2003. Engineered to enhance chassis rigidity and improve handling response, this rear lower arm bar is an essential upgrade for enthusiasts seeking more precise control during spirited driving, cornering, or track days. By reducing flex and body roll, it helps your vehicle maintain optimal alignment and stability, translating to a more confident driving experience.

Whether you’re a daily driver looking for improved ride quality or a performance enthusiast pushing your Subaru to its limits, the Cusco Lower Arm Bar Ver.2 offers a reliable solution to upgrade your suspension setup. Its durable construction and precise fitment ensure long-lasting performance, making it a valuable addition to your vehicle’s chassis reinforcement.

Key Features

The Cusco Lower Arm Bar Ver.2 Rear incorporates advanced design and high-quality materials to deliver superior performance and durability. Key features include:

• Constructed from lightweight yet strong steel, providing excellent rigidity without adding unnecessary weight to your vehicle.
• Designed with a reinforced mounting structure to effectively transfer load and minimize flex in the rear suspension.
• Precision CNC-machined mounting points ensure a perfect fit on Subaru Legacy B4 and Legacy models from 1998 to 2003.
• Easy bolt-on installation using factory mounting locations, requiring no modifications or drilling.
• Reduces chassis flex during aggressive cornering, improving steering response and overall handling.
• Enhances vehicle stability and reduces understeer or oversteer tendencies, especially during high-speed maneuvers.
• Designed with a sleek, black powder-coated finish for corrosion resistance and a clean appearance under the vehicle.
• Part of Cusco’s renowned lineup of chassis reinforcement components, trusted by motorsport and performance enthusiasts worldwide.

Construction & Design

The Cusco Lower Arm Bar Ver.2 Rear is crafted from high-strength steel tubing, carefully TIG-welded to ensure maximum durability and structural integrity. Its design features a reinforced crossbar that connects the lower control arms, effectively stiffening the rear suspension subframe. The bar’s compact, lightweight construction minimizes additional weight while maximizing performance gains. The black powder-coated finish not only provides corrosion resistance but also maintains a sleek appearance that complements your vehicle’s undercarriage.

Designed with precise engineering and CAD development, this component fits seamlessly into the factory mounting points, ensuring a hassle-free installation process. Its robust construction helps support increased chassis stiffness, which is crucial for maintaining proper alignment and handling during aggressive driving or on uneven surfaces.

Performance & Handling

By installing the Cusco Lower Arm Bar Ver.2 Rear, you’ll notice a more responsive and predictable rear suspension. The increased rigidity reduces unwanted flex, allowing your Subaru to respond more accurately to driver inputs. This translates to improved cornering stability, reduced body roll, and enhanced overall handling performance. While it does not directly increase horsepower, it significantly improves the vehicle’s ability to transfer power to the road effectively, especially during spirited driving or track use.

Enthusiasts report that this upgrade provides a more planted feel and sharper turn-in, making your Subaru more agile and confident in high-performance driving scenarios. The bar’s design also helps support better tire contact with the road, contributing to improved grip and safety.

Installation & Fitment

The Cusco Lower Arm Bar Ver.2 Rear is a straightforward bolt-on upgrade that requires no cutting, drilling, or complex modifications. Using the existing factory mounting points, it can typically be installed within a few hours with basic hand tools. No special tuning or adjustments are necessary, making it an accessible upgrade for DIY enthusiasts and professional installers alike. Proper installation ensures maximum effectiveness and longevity of the component.

• Easy bolt-on installation using factory mounting points
• No cutting, drilling, or tuning required
• Compatible with Subaru Legacy B4 and Legacy models from 1998 to 2003 (BE5/BH5 chassis)

What's Included

• Reinforced rear lower arm bar assembly
• All necessary mounting hardware and brackets
• Installation instructions

Ideal For

This product is ideal for Subaru enthusiasts who want to improve their vehicle’s handling and chassis stiffness. It’s perfect for spirited street driving, autocross, track days, or any application where enhanced stability and precise control are desired. Whether you’re upgrading your daily driver or preparing for competitive events, the Cusco Lower Arm Bar Ver.2 Rear offers a reliable and effective solution.

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.