Cusco LSD RS-1.5 (2way) Rear GC8 GDB GRB GVB STI Impreza

Cusco is well-known for making performance parts that help drivers get the most out of their vehicles, especially Subarus. This rear Limited Slip Differential (LSD) is designed to give your 2004-2007 Subaru Impreza STI a significant boost in traction and handling, particularly when you're pushing the car hard.

This is a 1.5-way LSD, which means it engages when you accelerate and also provides some locking effect when you decelerate. This dual action helps to put power down more effectively coming out of corners and also improves stability during braking and turn-in. The RS series uses a unique clutch disc design that offers a smooth engagement and a wide range of adjustability, allowing you to fine-tune how the differential behaves. It's built with strong materials to handle the demands of spirited driving and track use.

When installing a differential like this, it's important to use the correct gear oil recommended by Cusco. Proper break-in procedures are also crucial to ensure the longevity and optimal performance of the LSD. This part is a substantial upgrade for any STI owner looking to enhance their car's performance capabilities.