Extras - Ultimate GVM Upgrades

What is a GVM upgrade?

Gross Vehicle Mass (GVM) upgrades are an independently engineered and tested suspension solution that allows a legal increase in the payload of vehicles to exceed the limitation(s) specified by the manufacturer.

Why would I need or want a GVM upgrade?

GVM upgrades can provide improvements in your vehicle's load-carrying capacity, the ride and handling of the vehicle, as well as better towing stability.

Many 4WD's in Australia are modified with a range of aftermarket equipment and accessories that are designed to to enhance both on and off-road capability and/or to increase storage and loading capacities. These modifications typically result in considerable additional weight.

Most factory standard 4WD vehicles and light trucks have a GVM which is designed with little or no load margin over an above a full load of fuel, luggage and passengers. Any additional vehicle weight will likely result in the approved vehicle GVM being exceeded. The legal and safety implications in this case are substantial.

The towing of a trailer, boat or caravan adds further complexity.

What happens if I exceed my GVM?

Operating a vehicle beyond it's legal load limit can in some cases void the insurance policy(s) and may result in fines and/or litigation. Exceeding the approved GVM limit may result in a vehicle being impounded. For businesses and commercial operators, upgrading of vehicle(s) GVM can provide legal protection for liabilities and claims made for breaches in occupational health and safety regulations and/or employee negligence.

With determining a vehicle's GVM, an important fact often overlooked is that the ball weight of a caravan or trailer is calculated as part of the vehicle's GVM when attached.

What is involved in a GVM upgrade?

GVM upgrade options and requirements are determined by the following factors:

  • Pre or post-registration vehicle modifications
  • Suitability and serviceability of relevant existing components
  • Specific objectives for the proposed vehicle operations including maximum load
  • Rating of tyres and wheel rims
  • Braking capacity
  • Financial budget

Taking into account all of the above variables, The Ultimate Suspension can design, supply and install the optimal GVM upgrade package to suit your specific requirements.

The Ultimate Suspension can typically complete your GVM upgrade on average in 2-5 days.

Will a GVM upgrade affect my new car warranty?

In most cases a GVM upgrade will not affect the warranty of the vehicle. This must however be determined prior to installation and should be confirmed with the vehicle manufacturer.

What can I expect from a GVM Upgrade?

A GVM upgrade will increase the payload and generally improve the driving dynamics, handling and reliability of the vehicle.

Typically a brake system upgrade is recommended due to the added load capacity. Effective brake systems are a critical safety item. Read more about brake upgrade options.

Why choose us for your GVM upgrade?

The Ultimate Suspension are the trusted name in GVM upgrades for all vehicle types. For over 45 years we have been providing our products and services to private, commercial and fleet operators as well as to the Australian Defence Force, Government Agencies, United Nations peace keeping forces and international armoured vehicle manufacturers for both wheeled and tracked vehicle applications.

Australian Ultimate Suspension are authorised suppliers and installers of all leading brands of GVM upgrade and brake upgrade kits and components.

Which GVM packages do we offer?

The Ultimate Suspension provide pre-registration and post-registration second-stage of manufacture GVM Upgrades with a comprehensive range of options from industry-leading suppliers including Lovells, King Shocks, JMACX, AEV, Pedders, Tough Dog, Ironman, Dobinsons, Net4x4 and many others.

We design fully-Engineered packages to meet the specific requirements of vehicles including 4WD, commercial and tow vehicles. Our suspension systems deliver improved load-carrying capacity, superior handling and better reliability.

Our vast experience will allow us to provide the ultimate GVM upgrade for your vehicle. 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).

Ultimate GVM Upgrades

We supply and fit a comprehensive range of State and Federally Approved GVM Upgrades to suit every vehicle and application. We'll assess your precise needs and recommend the most appropriate solution available.


Lovells GVM Upgrades

Ultimate shocks and Lovells springs. A relationship that spans over 40 years.


NET4X4 GVM Upgrades

Premium quality Volkswagen Amarok parts and accessories.


Ultimate Brake Upgrades

Braking performance and stopping ability is critical to vehicle safety. Brake upgrades provide for safe towing and operating with heavy loads.


Ultimate Transmission and Intercoolers

The Ultimate Suspension are distributors of HDi Intercoolers and Transmission coolers. HDi products are proven to provide increased engine performance and improved reliability.


Coil & Spring Design and Fabrication

Intelligent design, quality materials and precise manufacturing = The Ultimate winning formula.


Engineering and Testing

The Ultimate Suspension provide in-house Vehicle Certification, Engineering and Testing.


Aussie Ryder Shock Absorbers

New generation Aussie Ryder gas pressure twin-tube shock absorbers.


Torsion Bars

Constant Performance.


Specialised Lubricants

Australian made Lube Alloy premium lubricants


The Ultimate Service

  • Industry Leaders since 1975
  • A reputation built on superior knowledge and excellent service
  • Our world-class products are exported Globally
  • The Ultimate Suspension is a trusted name in the Armoured Vehicle Industry
  • Independent advice. We use and recommend products based on your needs
  • 24 Month or UNLIMITED km Nationwide warranty on Ultimate Shock Absorbers
  • We provide a LIFETIME Warranty on all springs
  • Highly Qualified ASE Certified Technicians
  • Driveline and Suspension Specialists
  • Good advice, product support and after sales service

Key Advantages

The Ultimate Suspension for your vehicle

The Ultimate Suspension, industry leaders with over 45 years of experience are Australia's most trusted name in suspension systems, GVM upgrades, braking upgrades and towing upgrades. Let us provide the ultimate solution for your vehicle. CONTACT US

Ultimate Towing Solutions

Experience superior vehicle handling dynamics and safety while towing with a GVM and DBA brake upgrade package designed specifically to suit your requirements. The Ultimate Suspension has the ultimate reputation for suspension and braking systems for all towing applications.

Ultimate GVM & Tow Capacity Upgrades

The Ultimate Suspension are a Lovells, Pedders, and JMACX/AEV Authorised Facility. Let us provide you the best in vehicle dynamics and safety while towing with federally certified pre or post registration GVM or BTC upgrade solutions.

Defence & Armoured Vehicles

The Ultimate Suspension are a trusted name in the Special Purpose Vehicles industry servicing and supplying the Australian Defence Force, Government Agencies, International Armoured Vehicle manufacturers and UN peacekeeping forces.

Extreme applications require the ultimate performance and dependability. The Ultimate Suspension excel in providing specialised systems for vehicles used in extreme operations.

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What Our Clients Say

(2006 Nissan Pathfinder)

Fantastic, I'm totally blown away by my ULTIMATE SUSPENSION

(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
(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
(2006 Nissan Pathfinder)
Definitely worth the investment. more
Tri State Safaris
(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 ... 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

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

Ali Raza
(Toyota Hilux)

I have had four suspensions from ULTIMATE SUSPENSION and I love the ride on all four Toyota Hiluxs.


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!


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

(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

(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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