Cusco LSD RS 1 Way(1&2) Rear 96-97 GC8/01-07 GDB/08-14 GRB/11-14 GVB Subaru Diff

Cusco is well-known for making performance drivetrain components for Subaru vehicles, and this RS 1-way limited-slip differential (LSD) is a prime example. If you're looking to get more grip and better handling out of your 2004-2007 Subaru Impreza, especially during spirited driving or track use, this differential is a solid choice. It's designed to lock up more aggressively under acceleration, helping to put power down more effectively and reduce wheelspin.

This particular differential is a 1-way unit, meaning it primarily locks when you're accelerating. This characteristic is favored by many drivers for its predictable behavior during cornering. The RS series from Cusco uses a unique cam mechanism that allows for a smooth engagement and disengagement, providing a good balance between performance and daily drivability. It's built with durable materials to withstand the stresses of performance driving, ensuring it holds up over time. Installation involves replacing the factory differential, so it's a job that requires some mechanical expertise and specific tools, often best handled by a professional shop experienced with Subaru drivetrains.

When installing this differential, it's important to use the correct gear oil recommended by Cusco to ensure proper lubrication and function. This unit is designed to work with the factory transmission and axle components, but it's always a good idea to inspect those parts for wear before installation. Upgrading to a limited-slip differential like this one can significantly change how your Impreza handles, offering improved traction out of corners and a more connected feel to the road.