LOKKA Differential Locker

LOKKA is a fully automatic Differential Lock that does not require manual operation. It doesn't have switches, external lines, electric or pneumatic controls of any sort.
It relies on a simple mechanical design which makes use of two distinct sets of forces - the "ground driven" forces acting on a wheel when cornering (that force an outside wheel to turn faster) and the forces from the engine (power) turning the differential and axles.

The combination of these two sets of opposing forces and the LOKKA design allow the automatic engagement and disengagement of the driving gears when a vehicle turns or requires differential action.

Wheel slippage or a loss of traction can occur for many reasons off-road and include excess throttle, fast approach speeds, limitations in wheel travel (especially independent front suspension vehicles), weight transfer off drive wheels and slippery surfaces such as mud, sand, snow, shale, wet grass etc.

In many of these circumstances both the normal standard differential and LSD centre will allow the wheels with the least resistance to spin. Thus the wheels with traction do not obtain any real drive and the vehicle will lose speed or stop. LSD centres might assist under these circumstances but only if they are in good condition and only if there is enough resistance on the spinning wheels to activate the clutch pack or gears to force drive to the wheels with traction.
Even a new LSD will allow a lifted wheel to spin freely with no drive to the wheel with traction.

LOKKA overcomes the traction deficiency of the standard differential and LSD centre to ensure that a 50:50 power split is achieved when driving, irrespective of ground (or air !) conditions, yet at the same time still allowing differential action when cornering on hard ground.

Whether fitted to front or rear or both differentials, Traction Performance is significantly improved in all situations.

LOKKA enjoys an excellent reputation for reliability throughout the world – sold in every continent, in all realms of 4x4 and 2x4 performance activity.



Australian Warranty Statement

A 3 Year Unconditional Warranty is provided for LOKKA products.
Free Wheel Hubs in Part Time Conversion Kits have 1 Year Warranty




LOKKA Differential Locker


LOKKA Differential Locker
Lokka Typical Components Assembly Relationship Axle gear, Spacer, Cam Gear

LOKKA Differential Locker
Lokka Typical Components Assembly Relationship Axle gear, Spacer, Cam Gear

LOKKA Differential Locker
Lokka Typical Components

PDF Downloads

Australian 4WD Action LOKKA feature article
Installation 4 Pinion
Installation 2 Pinion
Toyota LSD Replacement

Recommendations

Darren B of NSW
Nissan Navara D22
Well the diff lock is fitted (by ACT diff doctor) and took it for a run in July. As you would expect it changes the off road performance of the Navara dramatically. So much so that my brother suggested he would look into getting one for his Hilux. Anyway very happy with the increase in off road ability given it's a torsion bar/leaf spring setup, lifts wheels everywhere however the diff lock in the front axle makes the world of diference.

Neil B of QLD
Toyota 4Runner 1991
Thanks for the assistance and knowledge given, having a slip diff rear your recommendation to lock the front was excellent and the right choice made. Lokka ordered and received 2 days later. I had this unit installed by Hart Transmissions in Strathpine and 100% to those guys. Just returned from Landcruiser Mountain Park and drove Camp Hill, Cruiser Canyon, Test Track going for all the difficult bits and the Lokka performed excellent. Thoroughly recommend to anyone wanting to get the most from their fourby.

Werner L of NSW
Hyundai Terrecan

LOKKA went in 2 weeks ago and I could give it a real test last weekend: it is just great! Beside the fact that it takes some time and hands to get the stock diff out to retrofit the LOKKA parts it is excellent value for the money.

The other guy for the second LOKKA I ordered is also more than happy! Thanks so far for the good service and the good products and again, I'm very happy with the LOKKA......