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GVM Upgrades & Chassis Extensions

GVM Upgrades & Chassis Extensions - Baw Automotive
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GVM Upgrades & Chassis Extensions

Play Video IconGVM Upgrades & Chassis Extensions - Baw Automotive

Keeping your vehicle within legal limits is not only beneficial to avoid those flashing red and blue lights, but essential for your warranty and insurance. Working outside of government regulations is not something we encourage anybody to do – and we certainly will not accept it in our workshop. This has a lot to do with safety too – that is one thing you should not be risking.

We are the BRISBANE JMACX AUTHORISED INSTALLATION FACILITY. This means your vehicle does not have to go anywhere but our Brisbane workshop! Your GVM upgrade is installed in our Brisbane workshop by our trade qualified team.

If you require a chassis extension or ute conversion, we can organise that for you as well. We liaise with the relevant businesses, organise the logistics and take all the pain away from building your dream 4X4. For more information please a give us a call.

gvm upgrades are something we do with the following brands.

  • EFS
  • ARB

As a Brisbane JMACX authorised installation facility – here’s what we can get you sorted with in our own workshop.


  • 70 SERIES  LANDCRUSIER fabricated track correction leaf diff
  • 79 SERIES LANDCRUSIER JMACX 300mm Chassis Extension
  • 79 SERIES LANDCRUSIER 3900 & 4200 GVM Leaf upgrade
  • 70 SERIES  LANDCRUSIER 3900 & 4200 GVM Coil Conversion
  • 79 SERIES LANDCRUSIER 4495 GVM (300mm  Super Chassis extension and Coil Conversion)
  • 79 SERIES LANDCRUSIER 6x6 conversion
  • DS 1500 DODGE RAM 4200 GVM

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 tyres. 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.

*Prices at BAW Automotive may vary slightly or change without notice from the JMACX Website.

Need to work out the correct GVM for your vehicle? Feel free to call us on 0417 783 415 or check out GVM Calculator.

Gross Vehicle Mass refers to the maximum a (fully loaded) vehicle can weigh. These totals are published by each manufacturer. Subtracting the Kerb Weight from the GVM provides the total load the vehicle can carry. This includes the combined weight of the occupants, fuel in the tanks and the weight of your accessories – such as front and rear bars, roof racks and canopies.

Exceeding the maximum GVM renders your vehicle as unroadworthy and it will not meet insurance requirements. It’s also not safe!

An approved GVM upgrade can increase the legal load capacity without losing performance or handling.

A typical GVM Upgrade includes:

  • Heavy duty coil or leaf springs front and rear
  • New shocks front and rear
  • A revised compliance plate and tyre placard.
  • An upgraded diff housing (Landcruiser and RAM 1500)


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