LOKKA Differential Locker

LOKKA is an automatic differential locker that is invaluable for Off-Roading. Whether fitted to front, rear or both differentials, Traction Performance is significantly improved in all realms of 4x4 and 2x4 performance activity.

LOKKA Differential Products

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.

The Full Length 4WD Action Video


*Credit: 4WD 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 & slippery surfaces such as mud, sand, snow, shale, wet grass etc.

In many of these circumstances both the normal standard differential and LSD center 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 centers 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 center 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.

LOKKA's operation & effectiveness comparison to other differentials summary:
3 Year Unconditional Warranty in Australia
Smooth automatic operation
Extremely sensitive unlocking (finger touch)
Wide range of models available
Dependable performance characteristics
Positive locking for 100% traction
Unmatched reliability due to simple design
Doubles your 4WD's offroad abilities
Ultra resilient, steel alloys for durability
Simple installation - Do it yourself fit



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

Recommendations

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.

Shaun D of TAS
My son has one of your lockers in his VP Commodore, I suggested your product to him after researching for a locker to suit my Ford 9 inch diff. Your locker works just as well as the detroit locker I put in my 9 inch and is not as harsh in some unlocking situations. We are very happy with your product.

George H
Toyota HLX LN167 2003

It does everything it said it would, locks up both front wheels in any condition and yet when doing the lock unlock test my girlfriend can unlock it with ease one handed. you can only notice that its there when your in 4WD, there is no difference to steering with the hubs in and the little lever in 2wd not a bit. The difference that I can see between a lokka and an air locker (besides being over $500 cheaper)

Is the air locker you flick a switch, lokka you move a lever. Seems like a good deal to me. Fitment is as quick and easy as said, i am very picky so I took a bit longer and I fitted new bearings but I can see it being done in halfa once the diff is out of the car.

I could not hear mine unlocking so if you cant don't worry its just working fine.