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Ian M of SA
80 Series

Just a few words about the Part Time 4WD Conversion you did on my 80Series Cruiser. Driveability has improved dramatically with no clunk in the drive train as you engage the clutch. My wife will now drive it!

Turning circle is better as there is no drive to take you in a wider arc. After not showing much in the way of better fuel consumption, I found I had an air-filter problem, I can see a marked improvement, both in towing a 2 tonne van and in normal work. Between 10-15%!




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.


Robert M of Telarah NSW

Here at Robert McShane Mechanical Repairs we have no hesitation in recommending 4WD Systems and their products to any potential customer.

4WD Systems offers and deliver the highest quality products and provide excellent and prompt service to their customers.
In doing our LPG Conversions we use the 4WD Systems fuel tanks. We have found through our experience that the 4WD Systems tanks are easier to fit, have a larger capacity and are cost effective.

It is with our pleasure that we recommend this company and their products. We encourage you to try 4WD Systems products, we're positive you won't be disappointed.




Chris D
Thankyou extremely happy with the tank and that its been a pleasure to do business with you thankyou very much on a quality product.


Mark P of QLD
Ford Cortina 1980

I love your lokka! much better than the detroit that i had in my rally car.




Daniel W of QLD
Holden Commodore

Just wanted to let you know how impressed I am with the lokka fitted to our borg warner diff(28 spline). Originally fitted in a HJ Holden 1 tonner with 330 hp atw it was punished for around 20,000kms before being removed when the vehicle was sold and fitted to our VN Commodore which has coverered nearly another 75,000km.

The VN is powered by an RB30 fitted with a skyline twin cam RB25 head and makes 467 hp atw while being fed 24psi of boost. Backing the RB is a Keas 3 speed auto with 3500 rpm convertor (5500 on transbrake) . The car is daily driven (on 16psi -360hp atw) but does hard yards at sprint meets, burnout/powerskid comps, powercruise, drags etc.

It has run a best of 11.4 1/4 mile at 121mph (16psi) on street tyres with a lack of traction. We have tried slicks but have managed to twist off 2 pairs of axles (2 axles at once -transbrake is violent) and also remove a large portion of crownwheel teeth on seperate runs. In total this diff has seen 5 gear sets and 6 pairs of axles but we have not had an ounce of trouble with the lokka. We have found the lokka to have great street manners being smooth and almost inaudible while being quick and predictable on the track. Couldn't be happier with the product and would recommend it to anyone.




Brent W
Toyota Landcruiser

I have now done about 350,000kms of trouble free motoring on my Lokka diff in the rear of my Toyota Landcruiser. After breaking the spider gears for the second time in the diff, I decided on recommendation to fit a Lokka diff lock to my vehicle, and what a great decision that was.

That was the last time I removed the diff centre for repairs and is performing as good as the day it was fitted.

Not only has the Lokka 'bullet proofed' the diff, it has markedly improved the performance of the vehicle off road. I have found I don't need to engage 4WD as often as before fitting the Lokka and have managed to get out quite a few situations I wouldn't have if I didn't have the Lokka.

I would just like to reiterate, the Lokka has done 350,000km of sometimes quite hard driving and is still performing perfectly.

I have no hesitation in recommending the Lokka diff lock to anyone wanting to enhance the performance of their vehicle.




Brian W
Toyota LCR 1HZ

I have got everything finished with the turbo instalation.

I had a 3 day wild west coast 4wd trip over anzac w/end and everything went extremely well. Long sandy beaches, sand dunes, river crossings, button grass plains, hill climbing, bottomless mud holes. Ran out of underbody clearance a few times but never out of power. The engine response is very good, fuel economy was good and good highway performance. Pyro gauge showing 250-300degrees for highway, 150-250 for offroad work and up to a shade under 500 on a long hard uphill highway climb.




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.


Dave & Amanda of TAS

Many thanks for all your hard work on the 6 wheeler Patrol. At last it actually drives really well and I am wrapped with it.

If you are ever in Tassie you are more than welcome to stay!