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

Eric G of Singapore
Toyota LCR Bundera RJ77

I have just install the Lokka to the front of my LandCruiser... Its works and I love it. I manager to climb a steep obstacle now. Thank you..


Adam H of NSW
Toyota LCR BJ73 1985

From my experience the front locker was far better on hill climbs especially on rocks with a lot of articulation. As you know my leafs arent as good as the coiled trucks that were there but the combination of the adj tough dogs set really soft, good tyres and the front lokka it did it easy and thats without a rear LSD. A friends lwb 92 patrol has only a rear fitted and on the steeper inclines it looked as though it was trying to pick the front wheels up as its being pushed up the hill rather than pulled which also brings up a safety issue. My cruiser simply pulled and clawed its way up anything and never tried to launch the front wheels which gave me a lot more confidence, also the diesel, dual batts and winch put just the right amount of weight over the front. There was a guy there with a pretty serious swb petrol patrol with at least a 4" lift and all the gear and plenty of experience and he had a lot of positive feedback for me after getting to the top of a hill that honestly had my clutch leg shaking a bit and getting out of his truck to watch me climb up. His comments were how easy it made it look in comparison to more highly equiped trucks.

I couldn't be happier with my truck the way it is now and would definitely recommend the front lokka over the rear and even better if you have a rear lsd. If you need more than that then maybe you shouldnt be there, if ya wanna get home anyway.

Cheers


Aaron O of QLD
Holden Rodeo 2WD
My friend and I installed my Lokka into my 2wd rodeo on the weekend. It works a treat! There are so many places I can go now. Normally I would be afraid to take on wet muddy grass, but now I can do powerslides through it! Thanks alot for a great product.