Turning a Mercedes-Benz G-Class into a 6×6 is one of the most complex and visually striking directions in off-road vehicle tuning. It is not a cosmetic upgrade but a deep engineering rebuild that changes the chassis layout, adds a third axle, and transforms a standard G-Class into a heavy, premium off-roader with dramatically increased capability.
What the Conversion Involves
The core of the build is lengthening the frame and installing an additional, third, driven axle with its own differential and drivetrain. This requires recalculating suspension geometry, reworking the driveshafts, brake system, and steering to match the new wheelbase. The body is extended to match the new wheel formula, and the rear section is rebuilt to accommodate the extra wheels, often alongside a spare wheel and technical storage compartments.
A separate stage involves selecting and fitting large-profile tires that match both the off-road character of the vehicle and the load capacity of a triple axle. Suspension is tuned so the vehicle feels equally confident on paved roads and rough terrain, despite the added mass and length.
Body and Interior Work
Once the chassis layout changes, the body receives widened arches, reinforced side steps, and underbody protection. Many builds are finished with signature bumpers, carbon fiber accents, and LED lighting that reinforce the vehicle’s status. Inside, a full trim upgrade is usually carried out — leather, Alcantara, custom stitching — along with adapting the electronics to the new axle configuration and sensor layout.
Who a 6×6 Is For
Clients choose this build when a standard G-Class no longer feels unique enough. A 6×6 conversion combines the off-road capability of a heavy-duty truck with the comfort and status of a premium SUV. The result works equally well for genuine off-road expeditions and for public appearances, where visual distinction from series-production models matters.
Why This Is a Complex Project
Working with an additional axle demands precise engineering: load distribution, synchronizing the drivetrain across three axles, and brake reliability under increased mass. Mistakes at this stage directly affect safety, which is why such projects are only handled by studios with real experience building heavy off-road structures and access to proven components.
Kubay Design carries out these conversions turnkey — from chassis engineering to final body and interior finishing — with an individual approach to every vehicle.
