Featuring high tension chrome molybdenium steel housing and gears the Cusco LSD is up for the task of serious competition. With large oil windows for increased flow and Cusco's original groove cut technology for improved efficiency on the clutch plates, stability and longevity is promoted. ----- The 1-way Type RS utilizes coil springs located between the pressure rings to develop initial torque and features full engagement only during acceleration. The use of coil springs rather than cone plates help promote faster, smoother engagement, along with higher durability.