JMACX - Heavy Duty Rear Axle - To suit TOYOTA 70 Series (ALL MODELS)

JMACX Heavy Duty Rear Axle - Suits Toyota 70 Series (ALL MODELS)



Our heavy duty diff upgrade that suits all 70 Series VDJ V8 Landcruisers with leaf rear suspension. The JMACX upgraded diff housing also has a engineered certified axle load rating of 2700kg with built in safety margin of 300kgs and this is the most important part don’t be fooled by huge tonne rating numbers on other diff housings if it doesn’t have a stated axle rating then don’t trust it. (if you need help calculating your weight, we can help by weighing your vehicle on our scales).



JMACX heavy duty housing is a fully fabricated 6mm thick housing with increased axle tube trusses and heavy duty brackets with chromoly spindles which are far stronger than the OE items.

Our heavy duty diffs correct the rear track to match front as factory units are 100mm narrower. Our diff is factory electric locker compatible.


Our heavy duty chromoly 2 piece axles with drive plates are stronger than factory axles.


  • Stronger diff housing

  • Fully floating axles

  • Better on & offroad handling

  • Swaybar compatible

  • Direct bolt in (No modifications needed)

  • Corrects rear axles track

  • Comes with extended brake line & handbrake extensions

  • Standard powdercoated BLACK





Is the Diff available for my standard leaf spring v8 Landcruiser?


  • Yes JMACX manufactures a leaf diff and axle upgrade kit that addresses increased axle load rating, track correction and stronger axles.


Can I install it myself?


  • Yes and certification documents for this can be supplied by JMACX directly to your certifying engineer or department of transport.


What about Engineering?


  • All installations will require engineer inspection & certification for each vehicle. JMACX will supply LB2 documentation for the diff upgrade directly to your certifying engineering or department of transport.


How much will an Inspection and Mod Plate Cost?


  • Between $1300 and $1500 (roughly, depending on total certification requirments and other modifications to the vehicle like long range fuel tanks etc).


Does the kit contain parts that are custom and maybe difficult to find if I'm in the middle of nowhere?


  • No, our heavy duty diff housing maintains all factory brakes, seals hubs & factory Toyota diff centre.


What if I break an axle?


  • Our heavy duty diff housings are full fabricated units that exceed the strength of the factory original unit. JMACX axles are the strongest production manufactured axle for Toyota Landcruiser available


How long does it take to Install?


  • The leaf diff installation usually can be completed in 5-6hrs vehicle dependant 


Can I have a custom colour?


  • Yes our diffs come powder-coated black standard but you can choose a different colour from the Dulux powder-coat colour chart .


Does the new wide track diff correct the rear axle track?


  • Yes, our diff is 100mm wider than the factory Toyota assembly.


Will it affect my insurance?


  • No, usually as long as it is engineered certified. but it is up to each individual to check with their insurer. (Generally insurers only require the vehicle to be legal.)

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