Cusco LSD RS 2way (1.5&2) Rear GDA/GGA WRX BR9 BM9

The Cusco RS 2way limited-slip differential is built with a unique cam mechanism that allows for adjustable engagement, offering either 1.5-way or 2-way operation depending on your needs. This means you can tune how the differential locks up during acceleration and deceleration, giving you more control during spirited driving or track use. It’s designed specifically for the GDA/GGA Subaru WRX, which means it fits right into your existing drivetrain setup without major modifications.

This differential uses a high-strength steel casing and precision-machined internal components to handle the stresses of performance driving. The RS series features a special clutch plate design that helps reduce chatter during low-speed maneuvers, making it more comfortable for daily driving than some other performance differentials. The 1.5-way setting provides strong locking under acceleration while offering a smoother transition on deceleration, whereas the 2-way setting locks up more aggressively on both acceleration and deceleration for maximum traction. You can switch between these settings by adjusting the cam angle, a notable feature that lets you adapt the car's behavior to different driving conditions or preferences.

When installing this differential, it's important to use the correct gear oil recommended by Cusco to ensure proper break-in and long-term performance. This unit replaces your factory open or limited-slip differential, and proper setup by a qualified mechanic is recommended to achieve the best results and ensure the longevity of the component. The improved traction and handling characteristics will be most apparent during cornering and when exiting turns, providing a more connected feel to the road.