Applied Suspension GVM/GCM upgrades for Effective Safety in Towing and Payload Carriage

Need greater weight carrying capacity?

Want more space, tray length, or room than your standard 4×4 has?

Want greater peace of mind in Safety for both On-road AND Off-road with your heavy payload or trailer unit?

You’ve come to the right place…

6×6 AUSTRALIA Pty Ltd offer effective solutions to all various GVM/GCM upgrades; Diff, Axle, and Drive-line Enhancements; and any High-Class, Custom-built, and bespoke Bodymaking requirements your vehicle requires.


Essentially, 6×6 AUSTRALIA  conversions have three main modification segments. The Chassis & Suspension system, the Drive-line system, and any Bodyworks you might require.

From our list ADR-compliance certificates, we’re able to provide you prestigious and affordable options to suit your individual budget and personal preference in which base vehicle you choose to convert to 6×6.

We convert most popular 4×4 models like Ford Ranger (current model), Mazda BT-50 (current model), Toyota Hilux (all series’), Nissan Navara (all series’), Mercedes-Benz G-wagen (current model), Nissan Patrol (all series’), Toyota Landcruiser (all series’), Ford F-trucks (all series’), Iveko Daily 5500, Mercedes-Benz Sprinter 4×4, and the list goes on…



Newly fitted Bogie-drive suspension system showing extreme wheel articulation ability
Recurved Loadshare beam with coil-springs is mounted to Suspension Cradle and has the ‘A-arm’ Diff locators in the middle
6×6 AUSTRALIA’s fully balanced (50/50) Loadsharing Coil Spring fully assembled “Rolling Bogie”, ready for final chassis installation
Recurved Loadshare Beams are handmade, seen here with purpose-built Tapered-wire Coil Springs bolted in
A-Arms and Lower control Rods (LCRs)are handmade suspension components



Drive-through Diff with Power-divider componentry for Mazda BT-50 6×6
6×6 AUSTRALIA’S Licenced ‘Roller-drive Power-divider’. The control centre for the bulk traction force displayed between our 6×6 system’s rear 4 wheels when under power. With 4 wheels under drive-power, and driving full-time in such tight proximity to each other, there is actually a lot of physical force being driven down into the road/track in that short space between the 4 wheels. This device keeps the axles from killing each other or “Sacrificing” one of their group (there are 4 axles total in the Bogie-drive assembly. One for each wheel).


6×6 AUSTRALIA’S ‘Drive-through Diff’ (6×6 Mazda BT-50 model pictured here) with integrated ‘Roller-drive Power-divider’ inside.

Originally invented in the 1990s by our Founder and Chief Executive, Mr. Bob James, this simple yet sophisticated piece of homegrown Aussie Automotive Ingenuity has many broad and diverse applications.

For more info on this, see our Future Concept Designs page. We at 6×6 AUSTRALIA Pty Ltd are currently finalizing successful trials (2017) of our Roller-drive Power-dividers in the Zamboni USA Corp.’s Ice-resurfacing machines, to help solve challenges there in balancing traction requirements for working on Ice-skating Rinks with maneuverability when off ice, in order to avoid suffering drive-line damage.

Applications in Top Fueler Drag-racing and High-speed off-road 4×4 racing machines are also set for the coming year (2018).



Australian Design Rule (ADR) and legal compliance of vehicle modifications:

Australian Design Rules (ADRs) are sets of rules that legally bind Automotive Engineers in vehicle design and manufacture (among other fields) to design safe and reliable vehicles for Australian roads.

6×6 AUSTRALIA’s conversions all have compliance with Australian Design Rules (ADRs) and have Federal ID Plate Approvals (IPAs) with IPA numbers that certify our 6×6 Suspension and Drive-line modifications inline with Federal legal design requirements. These little stamped ID plates, mounted under your vehicle’s bonnet, certify full Australian legal compliance of our engineering modifications to your vehicle. These modifications are then legally Roadworthy for Registration in any State or Territory across Australia.

These IPAs are not just given away to anyone with a welder in their shed and an idea for a vehicle modification. Our IPAs were hard fought and won over the prior 3 decades of continual R&D with much Brake testing, Weight testing,  Chassis Beam-Stiffness testing, Weld testing, this testing, and that testing, with our long-suffering Automotive Engineer Signatory, Mr. Alan Marburg from ‘All Vehicle Compliance’, QLD.

This following list of vehicles shows the 6x6s we have our own ADR-compliant IPAs for. Most of these models aren’t available in 6×6 from anywhere else in the world but here at 6×6 AUSTRALIA Pty Ltd!


6×6 AUSTRALIA Pty Ltd has Federally certified Identity Plate Approval for conversions to the following list of vehicles with our full Loadsharing Coil Spring/Disc Brake 6x6s:

1) – Toyota Landcruiser 70 series 6×6 (current model LC70, LC75, LC76, LC78, LC79) for Medium/Lightweight GVM/GCM (Federal ID Plate #43189), and for Heavyweight GVM/GCM (Federal ID Plate #46527);

6×6 Toyota Landcruiser 79 with custom Flatbed tray body.

2) – Toyota Landcruiser 200 series 6×6 (current model LC200) for Heavyweight GVM/GCM (Federal ID Plate #48397);

6×6 Toyota Landcruiser 200 with flatbed tray body awaiting RV/Camper fitout

3) – Nissan Patrol GU 6×6 (previous model Y61) for Medium/Lightweight GVM/GCM (Federal ID Plate #47606), and for Heavyweight GVM/GCM (Federal ID Plate #47607);

Nissan GU Patrol 6×6 with Flatbed tray body

4) – Mazda BT-50 6×6 (current model) for Medium/Lightweight GVM/GCM (Federal ID Plate #47852); and

6×6 Madza BT-50 with Flatbed awaiting fitout of RV/Camper body

5) – Ford Ranger 6×6 (current model) for Medium/Lightweight GVM/GCM (Federal ID Plate #48853).

New 6×6 AUSTRALIA models currently having our Suspension and Drive-lines adapted for ADR compliance and individual IPAs (in 2018) include:

Iveco Daily 5500 6×6 (current model) in Heavyweight configuration 8,000kgGVM;

Mercedes-Benz G- Wagen 6×6 (current model) in Heavyweight configuration 7,800kg GVM;

Toyota Hilux 6×6 (current model SR5) in Medium/Lightweight configuration 4,495kgGVM;

Nissan Navara 6×6 (current model) in Medium/Lightweight configuration 4,495kg GVM;

Ford F150 6×6 (current model) for Light, Medium, &/or Heavyweight GVM/GCM; and

Ford F350 6×6 (current model) for Heavyweight 8,000kgGVM/GCM.


The IPAs decrease the paperwork burden and the tyranny of Insurance & Registration costs for your truly superior new vehicle.

Other 6×6 providers require their modification work to be legally certified individually by a licenced ethical signatory (A Professionally registered Automotive Engineer) which is one of the expensive hidden costs we don’t have to add to our longstanding products and services for you, the customer.

Other expensive hidden costs which other 6×6 provider’s designs can’t evade include excessive tyre-wear. This excessive ‘Scrubbing’ of rear tyres is due to the fact they refuse to communicate with each other as there is no effective ‘Applied Loadshare’ between the rear 2 axles.

6×6 Australia’s Coil Spring Suspension with Loadshare Beams and Diff-Locating ‘A-Arms’, an International Registered Design, incorporates a mechanically integrated ‘Roll-Steer’ function, allowing the tyres to maneuvre under basic physical forces (Gravity and Centrifugal) from the payload as the vehicle corners. Also, in combination with our ‘Roller-drive’ Power-divider, the Coil Spring Suspension works to reduce tyre wear. It’s very subtle and difficult to describe without a proper demonstration, which helps explain this.