Ultimate 125mm HD Portal Axle Kit for Mercedes G-Class 6×6 Conversion

If you’re looking to transform your Mercedes G-Class into a 6×6 beast, a proper portal axle kit is a must. The 125mm HD Portal Axle Kit is specifically designed to provide the lift, clearance, and rugged durability necessary for a G-Class 6×6 conversion. This premium system delivers an instant 125mm (5 inches) lift, improved ground clearance, and optimized gearing to accommodate larger tires—all while maintaining factory-like handling and performance.

Why Choose a Portal Axle Kit?

A portal axle system is one of the most effective ways to increase ground clearance without modifying the suspension drastically. Unlike standard lifts that simply reposition suspension components, portal axles raise the vehicle by integrating a reduction gear system at the wheel hub, which increases height while maintaining optimal driveline angles and performance.

With six portal boxes, this kit ensures that your 6×6 G-Class conversion gets the proper geometry and functionality to handle extreme off-road conditions while keeping power and acceleration balanced.

Key Features of the 125mm HD Portal Axle Kit

• Instant 125mm Lift (~5 inches) – The portal boxes alone provide an impressive lift, which can be further enhanced with optional 2”, 3”, or 4” lift kits and larger tires.
• Proprietary 4-Gear Design – Engineered to reduce stress on the gears, minimize heat buildup, and maintain smooth power transfer, ensuring durability even in the toughest conditions.
• 1.22:1 Portal Gear Ratio – Compensates for larger tires, allowing the drivetrain to maintain optimal power, torque, and acceleration. If you’re upgrading to 35” tires, this ratio helps offset the increase in overall diameter while reducing stress on the transmission and differentials.
  
• No Errors or Fault Codes – The included advanced ABS sensors ensure that ESP and ABS functions remain fully operational without triggering warning lights or error codes.
  
• No Major Modifications Required – Unlike traditional axle swaps, this portal kit works with your existing axles, steering, and suspension—saving you from costly additional modifications.
• Heavy-Duty Components for Extreme Use – With reinforced CV joints, axle shafts, and steering knuckles, this kit is built for serious off-road adventures and high-performance applications.
• Compatible with Larger Tires – The kit supports a minimum tire size of 33” (255/85R16) and a maximum of 35” (315/75R16). If you’re considering 37” tires, consult with us for compatibility options.

What’s Included in the Portal Kit?

✔ 6 Portal Boxes with Pre-installed Gears
✔ 2 Front Outer Steering Knuckles (Heavy-Duty)
✔ 2 Heavy-Duty Front CV Joints
✔ 4 Heavy-Duty Rear Axle Shafts
✔ 4 Rear Brake Calipers with Integrated Parking Brake
✔ Set of Axle Braces for Front & Rear Axles
✔ 6 ABS Sensors (Pre-Calibrated)
✔ Mounting Bolts & Installation Hardware

Installation & Considerations

🔧 Professional Installation Required – This is a complex conversion kit that should be installed by a trained mechanic with experience in off-road and 6×6 builds.

🚗 Weight Limitations – The maximum vehicle gross weight should not exceed 3.5 tons (3,500 kg). Exceeding this limit will void the warranty and could compromise performance.

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🛞 Tire Recommendations – The optimal tire size range is 33” to 35”. If you’re considering larger tires (e.g., 37″), inquire about potential adjustments.

Transform Your G-Class into an Off-Road Titan!

With this 125mm HD Portal Axle Kit, your Mercedes G-Class 6×6 conversion will gain legendary ground clearance, enhanced off-road capabilities, and a rugged stance that turns heads. Whether you’re tackling rocky terrain, deep mud, or desert dunes, this system ensures your vehicle is equipped for the toughest challenges.

Ready to build your ultimate Mercedes 6×6? Get your Portal Axle Kit