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The OS Giken Super Lock limited-slip differential for Subaru Impreza STI GDB (rear) replaces the rear differential to improve traction management under load. The Super Lock LSD uses clutch-based locking behavior to transfer torque between wheels more predictably, helping maintain driveability during spirited or low-traction conditions. It's specified for the GDB rear application and suited to drivers needing firmer differential control.
OS Giken Subaru Impreza STI GDB (Rear) Super Lock LSD
