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Built for the Real World. GVM Upgrades that Let You Carry More, Safely

JMACX is the innovator and industry leader in coil conversions, 6×6, 4×4 suspension systems and GVM upgrades for the ultimate vehicle. 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.

GVM Weight Calculator
Step 01

Select Vehicle Make

Dodge
Ford
Ineos
Toyota
Step 02

Select Model Type

Ram 2500 Ram DS 1500 Ram DT 1500
F-Truck F250 '17-'24 F-Truck F350 '17-'24 Ranger Next Gen
Grenadier Quartermaster Grenadier Wagon
Landcruiser 200 Series Landcruiser 300 Series Landcruiser 70 Series Landcruiser Prado 250 Tundra Limited (XK70)

Tested. Proven. Trusted.

With the backing of Federal and State approval from the Department of Transport, you can be confident every GVM upgrade produced by JMACX undergoes extensive stability control testing and is designed to meet or exceed VSB14 requirements (Vehicle Standards Bulletin).

We believe continuous innovation, enhanced engineering and investing in Australian made components will generate the best results for our customers.

Could you be over your Gross Vehicle Mass (GVM) and you don’t even know it?

Find your nearest facility

COMFORT BUILT TOUGH

JMACX Off Road Solutions continues to expand the ALPHA range of shock absorbers. Our engineers are constantly developing and testing new vehicles characteristics. At JMACX we take the time to source the highest quality parts and only implement reliable technology

FAQ’s

Frequently Asked Questions

Yes, there are legal requirements and regulations for GVM upgrades. JMACX does extensive testing on all our GVMs to ensure that your vehicle remain safe and legal while increasing your vehicles capability.
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JMACX facilities

JMACX have over 40 authorised expert installers nation wide that sell and fit our suspension and GVM kits. Alpha electric in cab suspension kits can only be installed by JMACX authorised facility. click on me to locate your closest facility.

ABOUT JMACX

Want to know the history of how JMACX has rapidly become the leading edge in Australian made suspension and gvm kits? Find out by clicking on me.

CATALOGUES

Interested in how JMACX can elevate your four wheel drive for your next adventure then click on me