GVM Upgrades

Armoured Vehicles

4x4 Shop

Manufacturing

Service

4x4 Upgrades Shop

Browse our selection of high quality 4×4 & 6×6 vehicle upgrades and accessories.

Brake Upgrades

Brakes

4wd Suspension Upgrades

Suspension

4WD Driveline Upgrades

Driveline

4wd 4x4 Towing Accessories

Accessories

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About The JMACX Difference

GVM Upgrades for Touring & Towing
GVM Upgrades
Coil Conversions

Setting the standards for GVM upgrades, coil conversions & 4x4 accessories across Australia.

JMACX was originally founded on a dedicated desire to improve the ride, stability & load capacity of Australia’s most loved series of vehicles. Leading the way in Australian manufacturing of high quality vehicle components.

Our customers benefit from a passionate team that delivers unsurpassed build quality and customer service. JMACX are the innovators of the 70 series coil conversion and chassis extensions. With a patent design (IP2020202596) JMACX has always been at the forefront of coil conversions for others to follow.

The JMACX brand is expanding to include other vehicles such as:

  • RAM 1500
  • Ford Ranger
  • Landcruiser 200, 300 series
  • Toyota Hilux

Upgrading armoured/emergency/rescue service vehicles gives JMACX a unique edge that you won’t find anywhere else. This scope also includes high GVM touring and work vehicles.

Featured Products

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Vehicle Weight Calculator

GVM, BTC, GCM and Axel loads. You need to know why these are so important. You
have more than likely heard these terms before. But what do they actually mean and how do they affect your vehicle?

GVM Upgrade Calculator
GVM Weight Calculator
GVM Calculator

Good Reasons To Choose JMACX

You’ll get the benefit of our expertise with thousands of completed coil conversions & suspension systems fitted in commercial, military, outback tourers and work vehicles.

Our experience combined with millions of kilometres driven in some of the worlds harshest conditions shows that our patented GVM kit has proven itself to go above and beyond.

GVM Upgrades

Outstanding Quality

Our GVM upgrades have the highest Axle load rating in Australia.  This allows you to practically load and use the full potential of your vehicle’s GVM upgrade.

Unparalleled Design

JMACX really is the industry leader in GVM upgrades, coil conversions, 6×6 conversions & 4wd suspension systems. Our customers receive the strongest coil conversion on the market backed by full engineering & certification.

Proven Over Millions of KMs

Our track record speaks for itself. Our customers have driven millions of combined KMs on our GVM upgrades.

Unrivalled Handling & Stability

Our customers know the difference in stability and handling. It’s one thing to be able to carry a load, but to have the ability to do it with ultimate comfort and control is an objective that JMACX continually striving for.

JMACX Customer Reviews

We're proud of our products & the quality of our service

Highly recommended.. Actually can't recommend JMACX enough. All around good bunch of blokes and ladies. Was in a pretty big pickle and they had me sorted out, fixed up and back on the road again in a couple of hours.
Rhys C
Very impressive Business. Technically sound on vehicle modifications such as Chassis and Suspension modifications that allow you the confidence to adapt your vehicle to your maximum potential. These guys can help you develop your vehicle so you don't get sold something that doesn't work.
Scott M
I am genuinely really impressed with Jmacx. Not only because of their quality product but more so after experiencing their customer service with some after sales support I needed. Without going into details you can be sure Jmacx have got your back after the sale has been made! I am really stoked to be a proud owner of a Jmacx GVM upgrade! Thanks guys and special shout out to Adam for being so gracious with me.
Shaun M
Just want to thank the JMacx team for a great job on my Toyota 79 series, I am extremely happy with the result and it drives better than the day I bought it. I have had many positive comments on the upgrades to my vehicle. Everyone at the JMacx team is professional, accommodating, and enthusiastic about their systems. It was a pleasure doing business with you and I would highly recommend Jmacx if you are getting any work done on your car.
Mark P
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