The OS Super Lock LSD is the culmination of over four years of extensive research and development that led to a revolutionary LSD design with the capacity to house an unprecedented number of friction plates (up to 28 plates in total). Combined with our patented lock timing system, the Super Lock LSD is able to achieve complete lock in a progressive, smooth, and quiet manner, making it suitable for both street and racing performance.


This differential is now available for the Manual and Automatic 350Z, 370Z, G35, & G37. Modification of your Base Model Stub Axles required, Factory VLSD models require the purchase of an extra stub axle. The differential also changed when Nissan changed to the VQ35HR engine. Please choose the appropriate options below.

OS Giken Super Lock Differentials do not require any “break-in”. We only recommend that after installation and initial fluid fill to drive the vehicle for 1000 miles or 1 hr of track time and then change differential fluid. Please do not dyno the vehicle while on the initial fill.

OS Giken Super Lock Limited Slip Differential (LSD)