Jmacx is the innovator and industry leader in coil conversions/GVM upgrades for the ultimate Landcruiser. Giving you the strongest coil conversion on the market with full engineering and road legal in Australia for up to 4inches of lift and 35inch tires. With the GVM upgrade this is the ultimate suspension upgrade for outback tourers, commercial vehicles and the weekend warrior. Tested and proven in some of the world’s harshest conditions.

 

For our 4×4 suspension kits have a look through the 3900 GVM to 4495 GVM TABS below .

For our 6×6 suspension conversions have a look through the 4495 GVM to 6000 GVM TABS below.

LC70 Series 3900 GVM Coil Conversion

The JMACX 3900 GVM bolt in coil conversion is recommended for someone who is looking for ride comfort in a daily driven or work vehicle. It is great for varying loads. Example would be if you have a slide on camper or a canopy setup that only gets loaded when away on holidays. This kit maintains the comfort through all the load types, constant or unloaded.

 Or you may only be looking at the coil conversion for the 4inch lift 35inch tyres and extra ground clearance. This kit is well suited for you with unrivalled handling on and off road, allowing you to tow safely that big caravan or boat to the destination or head off into the bush with extra articulation. Nothing will stop you.

If you’re unsure on what GVM upgrade will be best for your vehicle, head over and have a play with our vehicle weight calculator.

GVM kit specs are:

  • all Jmacx bolt in coil conversion can be done *PRE AND POST REGO* in all states
  • all Jmacx bolt in coil conversion can have up to 4inch of lift and 35inch tyres
  • with this Jmacx bolt in coil conversion you get a:
  • Increase GVM to 3900kg
  • Maintain BTC of 3500kg at full 3900 GVM
  • Axle load increase to 2700kg 
  • SSM Number:48554 (visit rvcs website to confirm Specs)
  • (for more information on axle loads,BTC AND GVM please read our article here CALCULATE YOUR WEIGHT)

All JMACX products have full engineering and are approved by all states in Australia for post rego vehicles to ensure you are safe and legal on Australian roads. To see what comes in your JMACX 3900 bolt in coil conversion please watch the video and then use the kit builder bellow to get a quote today.    

Frequently Asked Questions

 Does the Kit Contain Parts that are Custom and Maybe Difficult to find if in the middle of Nowhere?

  • Our diffs maintain all factory brakes, hubs, bearings, seals, diff lockers etc.
  • Our Coil Kit uses factory length Landcruiser control arms, Panhard.
  • Most parts maintain OEM Toyota bushes, so parts can be easily accessible anywhere in the world.

How strong are the upgraded axles? 

  • Our 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 will Jmacx need my vehicle for?

  • The Conversion will take around 7-14 working days depending on what accessories are being fitted to the vehicle .

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

  • Yes

Can i have a Custom Colour?

Yes, automatically our kits are a standard black.

But let us know and we can give you a custom colour to suit you!

We often see customers selecting a colour that represents their business 

Will It Affect my Insurance?

No, but it is up to each individual to check with their insurer. (Generally Insures only require the vehicle to be Legal.) 

 

LC70 Series 3900 GVM Leaf Spring

Jmacx now has a leaf sprung gvm option for the landcruiser that ticks all the boxes. track correction, higher axle load capacity, improved braking, vehicle stability. All though the leaf spring kits can’t compare to the ride comfort of a coil conversion they are a great option for those who want to stay with the leaf springs and need a true and usable 3900 GVM upgrade kit. Here are some key points as to what you can get from a Jmacx 3900 leaf kit.

  • Increase GVM to 3900kg
  • Maintain BTC of 3500kg at full 3900 GVM
  • Axle load increase to 2700kg
  • This kit can come with either 300kg  or  300kg – 500kg leaf packs
  • SSM Number:50368(visit rvcs website to confirm Specs)
  • (for more information on axle loads,BTC and GVM please read our article here CALCULATE YOUR WEIGHT)

The biggest advantage to the Jmacx 3900 leaf kit is the high rear axle load capacity of 2700kg this combined with the GVM upgrade allows your landcruiser to be loaded practically in the rear to its full potential.   

All Jmacx products have full engineering to ensure you are safe and legal on Australian roads. To see what comes in your Jmacx 3900 leaf kit use the kit builder bellow to get a quote today.