Cusco Rear Differential Mount Collar 2008-2014 WRX / 2008-2021 STI Brand New

Description

Cusco Rear Differential Mount Collar 2008-2014 WRX / 2008-2021 STI | Drivetrain Stability | Mount Collar

Overview

The Cusco Rear Differential Mount Collar is a precision-engineered upgrade designed specifically for Subaru WRX and WRX STI models from 2008 to 2021. This high-quality component enhances rear differential response, providing a more direct and connected driving experience. Ideal for spirited driving, track days, or enthusiasts looking to improve handling, this collar helps maintain drivetrain stability during aggressive maneuvers without the need to replace bushings or perform complex modifications.

Built with a motorsport-inspired approach, Cusco’s engineering team crafted this collar during the iconic GRB Impreza era, ensuring it meets the demands of performance-oriented Subaru owners. Unlike traditional reinforcement bushings, this collar bolts directly onto the existing differential mount, making installation straightforward and hassle-free. Its robust construction ensures durability and long-term reliability, even under demanding driving conditions.

By reducing differential movement and flex, this collar translates into sharper turn-in, improved traction, and enhanced overall control. Whether you’re pushing your WRX STI on the track or enjoying spirited canyon drives, this upgrade offers tangible improvements in handling precision. It’s a practical, proven solution for Subaru enthusiasts committed to elevating their vehicle’s dynamic performance and confidence behind the wheel.

Features & Specifications

This Cusco Rear Differential Mount Collar is engineered for Subaru WRX and WRX STI platforms, featuring a durable steel construction that delivers increased drivetrain rigidity and response for enthusiasts seeking improved handling and control.

• Brand: Cusco
• Product: Rear Differential Mount Collar
• Part Number: Not specified in description
• Fitment: 2008-2014 WRX / 2008-2021 STI
• Material: Steel
• Finish: Black coating
• Construction: CNC machined and bolted
• Origin: Japan

Designed for direct bolt-on installation, this collar requires no removal of existing components, making it accessible for DIY enthusiasts or professional installers. It offers a significant upgrade in rear differential stability, especially during aggressive driving or track sessions, helping to maintain precise control and feedback from your Subaru’s drivetrain.

Key Benefits

• Enhanced Handling: Improves rear differential response for sharper, more predictable cornering.
• Drivetrain Stability: Reduces differential movement, minimizing wheel hop and drivetrain flex.
• Easy Installation: Bolts directly onto existing mounts without removing other components.
• Durability & Reliability: Built from high-strength steel to withstand spirited driving and track use.
• OEM+ Quality: Designed with precision and attention to detail for a perfect fit and long-lasting performance.

What’s Included

• 1× Cusco Rear Differential Mount Collar
• Mounting hardware (bolts and nuts)
• Installation instructions

Installation & Compatibility

This Cusco differential collar is a bolt-on upgrade that can be installed with basic mechanical skills and standard hand tools. While it is designed for straightforward installation, we recommend professional installation if you’re unfamiliar with drivetrain components or want to ensure optimal alignment and torque specifications. The collar is compatible with 2008-2014 Subaru WRX and 2008-2021 Subaru WRX STI models, fitting the rear differential mount precisely for a secure, stable upgrade. No additional modifications are required, but verifying fitment for your specific model year is always advised, especially if your vehicle has undergone previous suspension or drivetrain modifications.

For performance-oriented driving, this collar complements other drivetrain upgrades and tuning efforts, helping you get the most out of your Subaru’s handling capabilities. Proper installation ensures maximum benefit and long-term durability, making it a smart choice for enthusiasts seeking a reliable, effective upgrade to their vehicle’s rear differential response.

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