Currently special order directly from OS-Giken, please allow 8-12 weeks for shipping

Tired of the dreaded one wheel peel on your Datsun? We’ve got you covered with the OS Giken SuperLock Limited Slip Differential Series.

The OS Giken Super Lock LSD uses our patented pressure ring design that allows for smooth, progressive locking. This design is a spline-through-side-gear design that allows for fitment of more friction plates (up to 2x as many as competitors versions).

• All components are chemically heat treated for maximum durability

• All components are constructed from a high-grade steel alloy

• Gears are raw-forged for maximum strength

• Clutch disks are precision-machined simultaneously on both sides to extremely tight tolerances resulting in minimal warpage.

• LSD case is machined from a single billet piece to ensure uniformity.

The OS LSD standard spec allows for low preload while still retaining a fully progressive 100% lock capability. Operation is quiet and the progressive locking allows for smooth predictable locking. When replacing an open diff, equipping an

OS LSD will completely improve the driving experience while maintaining everyday drivability.

ORDERING INFORMATION - PLEASE READ ******

For the R180, there are 2 variants that exist. One will feature a ring gear inner diameter of 110mm, and the other will feature a ring gear diameter of 115mm. The limited slip for the R180 is only offered in the 115mm ring gear option. We offer a machining service for customers with the 110mm I.D. ring gear for an additional $350 shipped.

R200 CUSTOMERS, PLEASE READ ****
To our knowledge, all factory Datsun R200 differentials will feature 10mm ring gear bolts. The later Z31 differentials, and 240sx differentials will feature 12mm ring gear bolts.