OS Giken Superlock S30Z 240Z R180 115mm and 110mm Differential

- What type of limited-slip differential is this?
It is a clutch-type LSD, which is broadly comparable to ZF limited-slip differentials as supplied, for example, in the BMW M3, M4 GT4, Porsche 911 GT3 RS, or Nissan GTR Nismo.

- Why is this differential more expensive than most other limited-slip differentials?
This is a new limited-slip differential, not a reconditioned unit. It utilizes the best techniques and materials, eliminating the disadvantages of a traditional LSD. This high-end technology, however, comes at a price.

- Is it comparable to a Quaife or other Torsen LSD?
Partially. This limited-slip differential is also maintenance-free. However, much more is possible in terms of adjustment; the differential also locks with one wheel off the ground (unlike a Quaife) and also locks during braking/deceleration. Additionally, up to 100% lockup is possible, meaning more power can be transferred to the road surface. You will experience noticeably better stability in your car with an OS Giken, whereas with a Quaife, you might sometimes be unpleasantly surprised. Furthermore, the Superlock is highly suitable for drifting, while a Quaife or other Torsen is significantly less so.

- What is OS Giken?
OS Giken is a high-tech Japanese company that specializes in engine tuning and supplies high-quality clutches, differentials, and gearboxes, among other things. It is very well-known in Asia and America, and in Europe primarily for Asian brands such as Nissan.

- Why this limited-slip differential?
Design can handle more power
Lockup up to 100%, but without the disadvantages normally associated with 100% lockup.
No maintenance required; the clutch plates show virtually no wear. There are race teams that have been running the differential problem-free for 10 years, only changing the oil.

Adjustable acceleration/deceleration lockup
Thanks to its ideal setup and 100% lockup, you can expect better lap times or more controllable drifts. The differential can also be adjusted for excellent use on public roads. At low speeds, it will offer the advantages of an open differential, and when accelerating, the grip of a race limited-slip differential.

Central springs / negative preload (yellow box drawing)
The big difference lies in the central springs that actually pull the pressure plates (which apply pressure to the clutch plates) TOWARDS each other. These springs effectively ensure that there is little lockup during gentle driving, parking, or (braking) steering. During acceleration, this spring force
will still be overcome, and the differential will lock.

The differential has been proven by professional teams worldwide in rally, racing, and drifting.

An OS Giken limited-slip differential guarantees better stability and grip for every car type: rear-wheel drive, front-wheel drive, all-wheel drive. Engine rear, front, or mid – we will help you determine the correct configuration.

You can always inquire about the possibilities without obligation, and we are happy to answer any questions you may have about the Superlock.

The OS Superlock is available for almost every sporty brand: Acura Alfa Romeo Audi BMW Chevrolet Chrysler Dodge Ferrari Ford Honda Hyundai Infiniti Lexus Lotus Mazda Mercedes Benz Mini Mitsubishi Nissan Porsche Scion Subaru Toyota Volvo