6x6 AUSTRALIA Pty Ltd have been designing and building Bogie-drive (6x6) conversions on Light Commercial Automotive Chassis' for over 30 years. We've been in the game for generations, and have developed our Suspension & Driveline Technologies to keep ahead of the field well into the future. 6x6 AUSTRALIA are the place you can trust to have all your Custom/Bespoke Automotive Conversion works completed.

Coil Spring/Disc Brake 6×6 Nissan Patrol Y61/GU

For carrying heavy Payloads;

For Towing heavy Trailers/Caravans; and

For highly Safe and dynamically  Stable expression in your vehicle’s Steering Performance and Ride Comfort measures.

We have the solutions!


Most people Touring/Towing recreationally, or doing the same carrying heavy Payloads for work each day, often find themselves almost always forced to carry and tow above their vehicle’s legal GVM/GCM weight capacity limits.

This is seriously unsafe.


Does your utility vehicle require greater GVM/GCM capacities than its original factory limits? 


Maybe you require more Tray length than your current standard Light-commercial vehicle provides?


You’ve come to the right place for any of these Automotive requirements…

6×6 AUSTRALIA Pty Ltd offers effective solutions to the various requirements in Payload/weight capacity upgrades, and offer the ultimate in tractability upgrades for any and all potential applications (on-road and/or off-road).

This is seen in our standard Load-sharing, Coil Spring (w/prestige Air Bag upgrade options), Roll-steering, Bogie-drive Suspension & Driveline systems with Drive-through Diff and Integrated Power-divider built using legendary Ford 9.5″ (Middleweight models) or 10.5″ Diff Gear sets (Heavyweight models) and Heavy Duty custom Axle Shafts as well as a genuine ‘ARB Air Locker’ Diff Lock as standard across all models.

These Bogie-drive Suspension & Driveline systems, working together, provide some phenomenally advanced traction to your vehicle, as well some extreme wheel articulation, consequently allowing these vehicles to navigate and maneouvre past seemingly otherwise impassable landscapes… Safely and effectively to get you home and live to tell the tale.  


We are veteran experts in Custom-built Chassis Sub-frames, Diff/Axle Shaft Assemblies, and other Drive-line and bespoke Bodywork enhancements, all with remarkable style and inherent reliability.


We have been at this for over 30 years (est. 1985) and are the industry leaders in truly capable, safe, and reliable GVM/GCM upgrades for your Towing “Workhorse”.


6×6 AUSTRALIA offer 3 main Auto vehicle modification types for you to consider:

1)- Chassis & Suspension systems;


2)- Drive-line systems;


3)- Bodyworks.

2 of Bob’s sons, Steve in the back of ute, and BJ on the floor.


Our extensive list of highly-advanced and ADR-compliant Suspension & Driveline system upgrades have been designed and prototyped here by ourselves, beginning as a small family operation since 1985.

Each 6×6 model’s Federally licenced ID Plate Approvals (IPAs) certify our modification works.

 Any vehicles we don’t ourselves have IPAs for, we simply have our Professional Mechanical Engineer Consultants inspect and certify the modification for your project build.

It’s all a part of the service.



Click the links below to view 3D CAD images of our latest addition to our “Workhorse stables”, our Mil. Spec. 6×6 Rear Suspension & Driveline Assembly (Internationally Registered Design Nos. 201714910, 201714911, & 201714912):


Mercedes G-Wagen Rear Bogie-drive Suspension (forward angle underneath)


Mercedes-Benz G-wagen Bogie-drive Suspension (rearfacing overhead profile)





Newly fitted Bogie-drive suspension system showing extreme wheel articulation ability
Recurved Loadshare beam with coil-springs is mounted to Suspension Cradle with ‘A-Arm’ Diff locators in the middle
6×6 AUSTRALIA’s pure 50:50 Loadsharing Coil Spring fully assembled “Rolling Bogie”, ready for final chassis installation
Our Handmade, Recurved, Loadshare Beams, seen here with our Custom-designed, Tapered-wire, Coil Springs. These are designed for your vehicle’s main role to increase comfort and handling performance inline with its main service role.
6×6 AUSTRALIA’s Heavy Duty Suspension components





Click the link below to see our 3D CAD images:





Drive-through Diff with Power-divider components for Mazda BT-50 6×6.
6×6 AUSTRALIA’S ‘Integrated Power-divider’. The control centre for the bulk traction of the 4 rear wheels under drive power from the Gearbox. There is a lot of physical force driven down into the track over that short space between the 4 rear wheels. As this highly-energetic Physical Force “bites into” the road or track, the road or track tries to force it back into the tyres, and the balance is the normal stae of play between the two with the wheels propelling the vehicle in whatever direction is intended (forward or backward). Our Power-divider keeps the axle shafts from killing each other or “Sacrificing” one of their group (there are 4 axles total in the Bogie-drive assembly, one per wheel), and it keeps the wheels driving the vehicle along with optimal stable and stylish control/finesse (instead of having to rely on momentum/brute force to navigate obstacles).


6×6 AUSTRALIA’S ‘Drive-through Diff’ with integrated Power-divider’  fitted internally (6×6 Mazda BT-50 model pictured).

Bob James’ officially licenced technology integrated Power-Divider. One simple and ingenious piece of natural & intuitive Automotive Engineering that fits inside our Drive-through Diff.

Originally invented in the 1990s by our Founder and Chief, Mr. Bob James, this ingeniously simple, yet highly-advanced piece of homegrown Aussie Automotive Engineering has broad and diverse applications.

For more info on this, see our Future Concept Designs page.

6×6 AUSTRALIA Pty Ltd recently began finalising successful trials of our Power-divider with ZAMBONI Corp. USA and their world-renowned Ice-resurfacing machine brand, “THE Zamboni”.

It works to help solve challenges in balancing their traction requirements for working on Ice with traction and maneouverability, and adapting to when off-ice, i.e. on concrete or bitumen, in order to avoid suffering drive-line damage.

Applications in High-speed off-road 4×4 racing machines are also set for the coming year, later in 2019.



Australian Design Rules (ADRs) and legal compliance of vehicle modifications:

Australian Design Rules (ADRs) are the rules legally binding Vehicle Manufacturers and custom Automotive Engineers in vehicle design and manufacture, in order to design safe and reliable vehicles for all the Australian roads nationally.

All of 6×6 AUSTRALIA’s conversions have full ADR Compliance, and most with our own Federal ID Plate Approvals (IPAs) under our Federally-licenced 2nd-stage Design & Manufacturer status. 

Our IPA numbers certify our 6×6 Suspension and Drive-line modifications Nationwide.

This means you can register it in any State or Territory, and when you go to sell it, its IPA adds resale value, especially for potential interstate buyers who won’t need to acquire a new Engineer’s Report in their State or Territory (which they do have to do with individual Engineer Reports).

Federal IPAs are a long-winded and expensive process of Engineer Testing and Certification paperwork through the Federal Dep’t of Infrastructure, Regional Development, and Cities in Canberra.

They took us years to achieve, and once we put our IPA plate on your converted vehicle, it stays there for the life of the conversion.

 This following list reveals all the 6x6s we have IPAs for:

1) – Toyota Landcruiser 70 series 6×6 (all current model LC70s, e.g. VDJ79R, etc) for Middleweight GVM upgrade [Car Licence level] to 4,495kgGVM with IPA #43189;

and for Heavyweight GVM [Heavy Vehicle Licence upgrade] to 6,080kgGVM with IPA #46527;


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

2) – Toyota Landcruiser 200 series 6×6 (current model LC200) for Middleweight GVM to 4,495kgGVM [Car Licence upgrade]; and Heavyweight GVM to 6,080kg GVM [Heavy Vehicle Licence upgrade] with IPA #48397;

3) – Nissan Patrol Y61/GU 6×6 for Middleweight GVM to 4,495kgGVM [Car Licence upgrade] with IPA #47606;

and for Heavyweight GVM to 5,500kgGVM [Heavy Vehicle Licence upgrade] with IPA #47607;

Nissan GU Patrol 6×6 with Flatbed tray body

4) – Mazda BT-50 6×6 (current model) for Middleweight GVM upgrade to 4,495kgGVM [Car Licence upgrade] with IPA #47852; and

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

 5) – Ford Ranger 6×6 (current model) for Middleweight GVM to 4,495kgGVM upgrade [Car Licence] with IPA #48853.

New 6×6 models currently having our Suspension and Drive-lines adapted for their individual case’s ADR-compliance and IPAs in 2019 include:

Iveco Daily 5500 6×6 and 6×4 (current model) in Middleweight 4,495kg GVM [Car Licence operators], and Heavyweight configuration 8,000kgGVM [Heavy Vehicle Licence operators];

Mercedes-Benz Sprinter 6×6 and 6×4 (current model) in Middleweight 4,495kgGVM, and Heavyweight 8,000kgGVM;

– Mercedes-Benz G- Wagen 6×6 (current model) in Heavyweight configuration 7,000kg GVM;

Toyota Hilux 6×6 (current model SR5) in Middleweight 4,495kgGVM upgrade [Car Licence operators];

Nissan Navara NP300 6×6 (current model) in Middleweight 4,495kg GVM upgrade [Car Licence operators];

Ford F150 6×6 (current model) for Middleweight GVM upgrade to 4,495kg [Car Licence operators] and/or Heavyweight GVM upgrades to 7,000kg GVM [Heavy Vehicle Licence operators]; and

Ford F350 6×6 (current model) for Heavyweight 8,500kgGVM upgrade [Heavy Vehicle Licence operators].


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

Some expensive hidden costs our unique Bogie-drive systems are designed to overcome, and which other providers of 6×6 cannot boat, all include: 

i)- Excessive tyre-wear. This excessive “Tyre Scrubbing” as we have defined it, of the Bogie Rear-end’s four tyres is due to the fact other Bogie-drive systems don’t allow the axles to communicate with each other properly. This is because there is no effective ‘Applied Loadshare’ between their four wheels.

‘Loadshare’ is important, and for more than just redcuing costs from “Tyre-scrubbing”. It is primarily about vehicle safety to us.


6×6 Australia’s Coil Spring Suspension (International Registered Design No.s 201714910, 201714911, and 201714912) incorporates a mechanically integrated ‘Roll-Steer’ function, allowing the tyres to maneouvre under physical force from the Payload (carried above them) as the vehicle corners. Physical forces known as ‘Inertia’, ‘Gravity’, and ‘Centrifugal’ all combined).

Also, in combination with our ‘Integrated Power-divider’, the Coil Spring Suspension works to reduce tyre wear. This functional Roll-steering feature is very subtle and difficult to describe without a proper demonstration, which helps explain these concepts further.

It works similar to how a Skateboard steers, with the outer two wheels moving away from each other, and the inner two wheels contracting toward each other around a bend.

The raw image below attempts to explain it better.

Please, if you’re seriously considering we have the solution you require, contact us to organise a personal demonstration and/or a consultation appointment to discuss your requirements further.