CUSCO LSD 182 LT2 Limited slip differential Type-RS Spec-F (rear, 2 way) for SUBARU Impreza WRX (GRB/GVB)/WRX STI (VAB)A Cusco Limited Slip Differential offers the absolute best in traction. Cusco LSD allow you to choose 2 of 3 settings with each unit just with a simple overhaul. The Type RS springs absorb the initial torque. Compared to the Type MZ, the Type RS s initial torque comes on more gently. The response of the RS has lower friction and in turn, is transfers power to the ground more efficiently. The Low Initial Torque means Less Power Loss. This equates to