True six-wheel drive
All three axles are driven for genuine six-wheel traction.
6x6 Cruiser. Why not?
Six driven wheels, tandem coil-sprung rear axles and a complete engineered chassis conversion.
What is a JMACX
6x6 conversion?
A true 6x6, no lazy axle.
A JMACX 6x6 transforms the Toyota Land Cruiser 79 Series into a genuine six-wheel-drive platform. Unlike conversions that use an undriven “lazy” or tag axle simply to carry more weight, all three axles are driven.
The original rear leaf-spring chassis arrangement is replaced with a purpose-built Super Chassis and two coil-sprung rear axles. The chassis, driveline, suspension and braking system are engineered to work together as one complete package.
Greater usable capacity
The longer, stronger platform creates more room for a tray, canopy, fuel, water and touring equipment.
Coil-spring control
Tandem coil-sprung rear axles provide a controlled, comfortable ride under changing loads.
Engineered as one system
The chassis, axles, suspension, driveline and brakes are designed to work together.
How does it work?
The factory transfer case continues to drive the front axle and sends power to the intermediate axle. A pass-through driveline system then transfers power from the intermediate axle to the rearmost axle, creating a genuine three-axle drive system.
True six-wheel drive
Power is delivered to the front, intermediate and rear axles. The third axle is driven — it does not simply support additional weight.
Pass-through driveline
The intermediate differential incorporates a 6x6 output flange and shaft. A heavy-duty jackshaft carries power through to the rear axle.
Automatic drive coupling
A centrifugal clutch connects the intermediate and rear driveline systems, providing a solid transfer of drive when additional rear traction is required.
Locking traction
The intermediate differential includes an air locker. Together with the appropriate vehicle locker configuration, the system can deliver exceptional traction across all three axles.
Multi-link coil suspension
The rear leaf springs are removed and replaced by heavy-duty control arms, A-frame assemblies, panhard control, coil springs, shocks and sway bars.
Six-wheel braking
All three axles are braked. The correct brake hardware, hoses, park-brake system and brake assistance are specified to suit the donor vehicle and completed build.
JMACX 6x6
6x6 Kit Inclusions
What’s included in the standard kit
These core engineering and mechanical components are included as standard. Together, they transform your Land Cruiser into a fully functional, engineered and road-legal 6x6 platform.
Core 6x6 Super Chassis and Driveline
6x6 Coil-Conversion Super Chassis
A complete heavy-duty, straight-rail replacement chassis, professionally integrated from the rear of the cab.
Intermediate and Rear Differential Housings
Heavy-duty JMACX axle housings engineered specifically for the coil-sprung 6x6 system.
Intermediate Differential Centre with Air Locker
An integrated, driver-activated locker designed to provide maximum six-wheel-drive traction.
6x6 Driveline Hardware
Includes the output flange, output shaft and heavy-duty intermediate jackshaft required to drive the third axle.
Upper A-Frame Assemblies — “Batwings”
High-strength locating links engineered to maintain correct rear-axle geometry.
300M Axles, Drive Plates and End Caps
Ultra-strong chrome-moly axle shafts designed for demanding loads and off-road use.
Heavy-Duty Trailing Arms
Complete pairs of upper and lower rear trailing arms.
Rear Panhard Rod and Sway Bar System
Includes the rear panhard rod, sway bar and connecting links for stability and controlled body roll.
Brake Hardlines and Hoses
A complete braking-line package with braided stainless-steel hoses and high-pressure hardline tubes.
Chassis Installation Hardware
All required structural mounts, brackets, bump stops, bolts and fitting hardware.
Standard Steering, Driveline and Fuel Upgrades
JMACX Heavy-Duty Adjustable Front Panhard Rod
Corrects front-axle alignment and maintains accurate steering geometry.
Brown Davis 185-Litre Replacement Fuel Tank
A high-capacity diesel tank designed to provide clearance around the 6x6 driveline.
2-Inch JMACX H-Beam CNC Billet Radius Arms
Premium high-strength radius arms supplied with OEM bushes for correct caster and front-axle control.
Components tailored to your build
The following components are specified according to your suspension height, cab configuration, driving requirements and expected vehicle load.
Specified during quotation
Shock absorbers
One complete set of six shocks will be specified.
JMACX Pro Series
Premium mechanical shocks valved for a 3,900 kg GVM. Available for 2–3-inch and 4-inch lifts.
Alpha Manual
Hard-anodised aluminium shocks with manual damping adjustment. Available for 2–3-inch and 4-inch lifts.
Alpha Electric with Active Control
Electronically controlled shocks that adjust damping in as little as 0.26 seconds in response to vehicle movement and G-force. Includes an in-cab controller. Available for 2–3-inch and 4-inch lifts.
Forward chassis bracing
Double Cab Forward Bracing Kit
Reinforces the chassis connection on Land Cruiser 79 Double Cab models.
Single Cab Chassis Bracing Kit
Purpose-built for non-ANCAP Land Cruiser 79 Single Cab models.
Front braided brake lines
ABS-CompatibleNon-ABS
Specified according to the vehicle’s braking system.
Front sway-bar correction blocks
30 mm — 2″ lift40 mm — 3″ lift60 mm — 4″ lift
Coil-spring lift heights
| Axle Position | 2″ Lift | 3″ Lift | 4″ Lift | Load Rating |
|---|---|---|---|---|
| Front Coils | 2″ LiftAvailable | 3″ LiftAvailable | 4″ LiftAvailable | Load RatingMatched to build specification |
| Intermediate Progressive Coils | 2″ LiftAvailable | 3″ LiftAvailable | 4″ LiftAvailable | Load RatingUp to 4,495 kg GVM |
| Rear Coils | 2″ LiftAvailable | 3″ LiftAvailable | 4″ LiftAvailable | Load RatingUp to 4,200 kg GVM |
Rear load assistance
Heavy-Duty Bump Stops
Two pairs of heavy-duty internal coil bump stops. Best suited to vehicles carrying a consistent heavy tray load.
Constant LoadHybrid Load Assist
One pair of intermediate bump stops and one pair of high-pressure Airbag Man helper airbags on the rear axle. Ideal for towing and variable loads.
Towing and Variable LoadsFull Air Assist
Two pairs of high-pressure Airbag Man helper airbags fitted to the intermediate and rear axles for maximum load support and control.
Maximum Load Control