Extras - GVM Upgrades

We understand things relating to GVM upgrades and legalities can be very confusing.

Though we recommend you read the information below, you may just prefer just to speak to us.

Why choose us for your GVM upgrade?

With over 45 years of experience, The Ultimate Suspension exports across the globe and is a trusted name in the armoured vehicle industry, supplying the Australian Defence Force, local government agencies, international armoured vehicle manufacturers, and UN peacekeeping forces with suspension systems and upgrades for both wheeled and track applications.

Australian Ultimate Suspension is also a JMACX Authorised Facility.

Now we've planted that flag let's move on.

What is a GVM upgrade?

Put simply a Gross Vehicle Mass (GVM) upgrade is an independently engineered and tested suspension solution that allows users to increase the payload of their vehicle from what the manufacturer originally designated.

Why would I need or want a GVM upgrade?

With an upgraded GVM you can ensure specific improvements in your vehicle's functioning such as its carrying capacity, your ability to ride and handle the vehicle, as well as its towing stability.

While most 4WD's in Australia are used as large suburban SUV's a large number are modified with a range of aftermarket equipment designed to enhance both on and off-road capability. These modifications come at the cost of additional weight which is not offset by wishing it wasn't there.

If you have added weight to your 4WD or light truck and intend to carry a full load of fuel, luggage and passengers then it's very likely you've already exceeded or come very close to exceeding the approved vehicle GVM.

We haven't even started to speak about a caravan....

Get in touch with us to discuss your requirements.

What happens if I exceed my GVM?

If you are operating a vehicle beyond its legal load limits you are automatically at risk for litigation and fines. You can be charged for exceeding your GVM which may result in your vehicle being impounded. If you are a business owner or manager, upgrading your GVM also protects you from claims made for breaches in occupational health and safety regulations or employee negligence. Penalties vary from state to state.

Something to note, the ball weight of your trailer or caravan is calculated as part of your vehicle's GVM when attached.

What is involved in a GVM upgrade?

There are a number of important factors that go into determining the availability of a GVM upgrade for your vehicle.


  • Pre or post-registration
  • Current status and quality of the existing components
  • Desired outcome
  • Rim rating
  • Braking ability
  • Expected vehicle loads
  • Your budget

Once we understand these parameters we can then provide our recommendation on the best GVM upgrade package to suit your specific vehicle and requirements.

Once given the go-ahead you can expect we'll have your vehicle for about a week to test, fit and check your new setup.

Make an appointment now for us to assess your vehicle.

Will a GVM upgrade affect my new car warranty?

In most cases, a GVM upgrade will not affect your vehicle’s warranty. It is, however, best to check with who is fitting your GVM and your vehicle’s manufacturer to ensure your warranty will remain intact.

What can I expect from a GVM Upgrade?

A GVM upgrade not only increases your vehicle payload but also provides an excellent ownership experience by often vastly improving the driving dynamics of your vehicle.

Though not usually a requirement we strongly recommend a brake system upgrade due to the added load capacity of a vehicle with a GVM upgrade. Brake systems are often overlooked however they provide a huge benefit in terms of vehicle dynamics and safety. Read more about your brake upgrade packages.

Which GVM packages do we offer?

We offer a range of Pre-Rego and Post-Rego Second Stage of Manufacture GVM Upgrades from industry-leading suppliers like Lovells, King Shocks, AEV, JMACX, Pedders, Ironman, Dobinsons, and Net4x4. Engineered to meet the specific requirements of 4WD and tow vehicles, these suspension systems excel in load-carrying capacity, and deliver superior handling and reliability in adverse driving conditions.

We can recommend, source and fit a GVM upgrade to almost any vehicle so get in touch with us to discuss your requirements.

JMACX off-road solutions

JMACX was founded by Jason McIntosh and is arguably the industry leader in large GVM upgrades for VDJ 70 Series and 200 Series Landcruiser in Australia, and the world. JMACX brought the world's first ever bolt-in coil conversion that has full SSM Approval bringing together comfort and off-road capability. The JMACX GVM Upgrades are available for both Pre and Post Registered vehicles across Australia (confirm your state laws before purchasing).

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GVM Upgrades

We supply and fit the full range of State and Federal approved GVM upgrades to suit every vehicle and application. We'll assess your precise needs and recommend the most appropriate solution available.


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Custom Fabrication and Spring Design

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Why Choose Us?

  • Since 1975 means more people trust us with their investment
  • The Ultimate Suspension exports across the globe and is a trusted name in the armoured vehicle industry
  • Independent operator with no product line lock in - we chose and manufacture only the best
  • 24 Month / UNLIMITED km nationwide warranty on Ultimate shock absorbers
  • LIFETIME warranty on all springs
  • ASE certified technicians
  • Driveline and suspension specialists
  • Full support and excellent after sales service

Call to speak to one of helpful staff.

Key Advantages

Design the Ultimate Suspension for your 4WD

With over 45 years of experience The Ultimate Suspension exports across the globe and is arguably the most trusted name in suspension and vehicle dynamics upgrades.

Tow with Ultimate Safety & Confidence

Experience the best in vehicle dynamics and safety while towing with a GVM and DBA brake upgrade package designed specifically to suit your exact requirements. Our service costs no more and is immeasurably better than our competition.

Ultimate GVM & Tow Capacity Upgrades

As a Lovells, Pedders, and JMACX/AEV Authorised Facility experience the best in vehicle dynamics and safety while towing with federally certified pre or post registration GVM or BTC upgrade solution.

Military & Export Suspension Systems

The Ultimate Suspension is the trusted name in the armoured vehicle industry, supplying the Australian Defence Force, local government agencies, international armoured vehicle manufacturers and UN peacekeeping forces.

Join over 5000 other customers

What Our Clients Say

Jack F.
(2006 Nissan Pathfinder)
Fantastic, I'm totally blown away by Testimonial Generator. more
Rick E
(2006 Nissan Pathfinder)
Ultimate Suspension saved my business. This is simply unbelievable! Man, this thing is getting better and better as I learn more about it. more
Vivie X
(2006 Nissan Pathfinder)
Ultimate Suspension was worth a fortune to my company. I made back the purchase price in just 48 hours! Thanks Ultimate Suspension! more
Nona D
(2006 Nissan Pathfinder)
Definitely worth the investment. more
Michael & Joanne McCulkin
(Mitsubishi Canter All Terrain Warrior 4WD Coach)

Tri State Safaris operates 4WD tours Australia wide in our Mitsubishi Canter All Terrain Warrior 4WD coach. The vehicle is only 12 months old but has always been in need of a better ride. We ... more

Michael Hall
(2006 Nissan Pathfinder)
Being dissatisfied with the very rigid ride from the original suspension on my 2006 Nissan Pathfinder, and following discussions with yourselves, I decided to have the suspension changed to The Ultimate Suspension Gas Shock Absorber System. ... more
Charlie C

These guys are absolutely fantastic to go to. I am really glad that I found them. Ken and his team spent two hours with me when I first turned up for a quote, making ... more

Ali Raza H

I am from Pakistan. I have had four suspensions from ULTIMATE and love the ride on all four hiluxs.

Michael G

five stars, best improvement for my Triton. Got the lift and suspension upgrade 5 years ago and a rebuild this year. Car drives much better now.

Russell G

I am so happy with my Ultimate Suspension, I wouldn't buy anything else in the future. Quality products, great service, not one issue with my lift kit which has now done 150000 Kms, car still ... more

Rod C
(VW Amarok)

I had extensive suspension and other 4WD accessories supplied and fitted to an Amarok to accommodate a Trayon camper and outback travel. The advice provided was top class, the products supplied were excellent and ... more

Verity S
(Pajero Sport GVM)

Friendly, experienced and knowledgable staff. Did exactly what was needed, no hidden extras. Very happy and loved the enthusiasm of the staff who clearly take pride in the service they offer.


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