Toyota LandCruiser LC100 Series 4700 HDJ100 UZJ100 Portal Axle Portal Gear Lifts Portal Hubs Drop Axle Gear Reduction Hubs 4.5 inch lift high performance offroad/4×4/overland/racing suspension

HPR portal axles maximize center ground clearance and multiply wheel torque without requiring massive tires or extreme suspension lifts

Parameters:

Ratio: 1.22

Portal lifting: 4.5 inch

Bolts pattern: 5 x 150

Portal Housings Materials: Steel

Gears: Helical

Gears quantity for each portal: 4 pcs

Core Functions & Key Benefits

• Massive Ground Clearance: Standard suspension lift kits only raise a vehicle's body and frame, leaving the lowest points—the differential pumpkin and axle tubes—vulnerable to rocks. Portals physically lift the entire axle assembly, instantly providing 4.5 inches of extra clearance directly under the center of the vehicle.

• Hub Gear Reduction: Portal boxes contain a set of reduction gears (often around a 20% to 22% reduction ratio). This mechanical advantage multiplies torque directly at the wheel, allowing vehicles to effortlessly turn oversized tires without needing to re-gear the central differentials.

• Drivetrain Stress Relief: Because the gear reduction happens at the very end of the line (the hub), the axle half-shafts, ring-and-pinion, and differential handle significantly less stress. They spin faster with less torque load, reducing the risk of snapped axles on the trail.

• Preserved Suspension Geometry: Unlike massive suspension lifts that throw off steering linkage angles, control arms, and driveshaft joints, portals attach to the ends of the existing architecture. You retain factory-tuned ride quality, suspension travel, and electronic shock settings

• Increased Track Width: Most aftermarket portal kits push the wheels slightly outward. This wider stance compensates for the higher center of gravity, maintaining or even improving the vehicle's side-slope stability.