Cusco LSD RS 1.5-way (1.5/2-way) CZ4A Evo X (AYC models ONLY) Side Bearing not included

Cusco is well-known for making performance drivetrain components, and their RS 1.5-way Limited Slip Differential is a prime example of their expertise. This differential is specifically designed for the Mitsubishi Lancer models equipped with Active Yaw Control (AYC), helping to put power down more effectively during spirited driving and track use. By managing the difference in wheel speed between the left and right rear wheels, it significantly improves traction out of corners and enhances overall vehicle stability.

The RS model features a 1.5-way locking mechanism, meaning it engages strongly under acceleration and partially under deceleration. This provides a predictable feel, allowing for more aggressive throttle application while exiting turns. The internal components are well-built for durability and consistent performance, even under demanding conditions. Installation involves replacing the factory differential, and it's important to note that the side bearings are not included with this unit and will need to be sourced separately. This LSD is a substantial upgrade for Lancer owners looking to maximize their vehicle's performance potential, especially for track days or autocross events.

When installing this differential, ensure you have the correct tools and refer to the manufacturer's detailed installation instructions. Because this is a performance-oriented component, it's often paired with other drivetrain upgrades to achieve the full benefit. Remember to acquire the necessary side bearings before beginning the installation process to avoid delays.