Cusco Rear Strut Brace Type ALC OS

2011–2025 Subaru Legacy B4 (BL5/BLE) / Outback (BPE) 2.5L

Part #: 684 536 AN

Overview

The Cusco Rear Strut Brace Type ALC OS is a high-performance suspension upgrade designed specifically for Subaru Legacy B4 (BL5/BLE) and Outback (BPE) models from 2011 to 2025. Crafted from premium materials, this strut brace enhances chassis rigidity, reduces flex during spirited driving, and improves overall handling response. Whether you're a daily driver seeking improved stability or a performance enthusiast pushing your vehicle on twisty roads or the track, this strut brace offers a perfect balance of lightweight construction and strength.

By installing this rear strut brace, you'll experience more precise steering feedback, reduced body roll, and enhanced cornering confidence. Its sleek design not only boosts performance but also adds a sporty aesthetic to your engine bay, making it a popular choice among Subaru enthusiasts who want both form and function.

Key Features

The Cusco Rear Strut Brace Type ALC OS incorporates several advanced features to maximize your vehicle's chassis performance:

• Constructed from lightweight aluminum with a real carbon fiber wrap, providing an optimal blend of strength and weight savings.
• The aluminum and carbon fiber combination helps reduce overall weight while maintaining durability, contributing to improved handling dynamics.
• Designed with precision-engineered brackets that ensure flawless fitment for Subaru Legacy B4 and Outback models, guaranteeing easy installation without modifications.
• The end plate brackets are finished in a titanium gray color, complementing the sporty look of your engine bay and highlighting the carbon fiber accents.
• The internal piping is optimized for a perfect balance between lightweight characteristics and structural integrity, ensuring long-lasting performance under demanding conditions.
• Enhanced chassis rigidity helps support increased driving confidence during aggressive cornering and spirited driving sessions.
• Designed to complement other suspension and chassis upgrades, making it ideal for enthusiasts looking to fine-tune their vehicle's handling.
• Manufactured by Cusco, a trusted brand known for high-quality performance suspension components and chassis braces.

Construction & Design

The Cusco Rear Strut Brace Type ALC OS features a one-piece aluminum center bar wrapped in real carbon fiber, showcasing a sleek and sporty appearance. The use of aluminum ensures a lightweight profile that minimizes additional weight on your vehicle's suspension system, while the carbon fiber wrap provides a distinctive look and additional strength. The brackets are precisely machined to match the OEM mounting points, ensuring a secure and snug fit without the need for drilling or modifications.

The titanium gray finish on the plates and brackets not only enhances durability against corrosion but also adds a refined aesthetic touch to your engine bay. The overall design emphasizes rigidity and responsiveness, helping your Subaru maintain optimal handling characteristics during both daily driving and high-performance maneuvers.

Performance & Sound

While the primary benefit of the Cusco Rear Strut Brace Type ALC OS is improved chassis stiffness and handling response, users often report a noticeable reduction in body roll and more direct steering feedback. The structural reinforcement provided by this brace helps your vehicle respond more predictably to driver inputs, especially during aggressive cornering. Although it does not directly increase horsepower or torque, the added chassis rigidity can contribute to a more confident and engaging driving experience.

Installation & Fitment

The Cusco Rear Strut Brace Type ALC OS is designed as a bolt-on upgrade that requires no cutting, drilling, or complex modifications. It mounts directly onto the factory mounting points on your Subaru's rear suspension, making installation straightforward for those with basic mechanical skills. The included brackets and hardware ensure a secure fit, and the process typically takes less than an hour. No tuning or additional adjustments are necessary after installation, allowing you to enjoy immediate handling improvements.

• Easy bolt-on installation with factory mounting points
• No cutting, drilling, or tuning required
• Designed specifically for Subaru Legacy B4 (BL5/BLE) and Outback (BPE) models from 2011 to 2025

What's Included

• Aluminum center bar with real carbon fiber wrap
• End plate brackets finished in titanium gray
• All necessary mounting hardware and brackets
• Installation instructions

Ideal For

• Subaru owners seeking improved chassis rigidity and handling response
• Performance enthusiasts looking to enhance cornering stability
• Daily drivers wanting a subtle upgrade for better driving confidence
• Track day participants aiming for more precise steering feedback

Emissions Note

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