16. The front axleshafts were installed and the Axletech portal boxes bolted on. The portal boxes have four massive gears inside: a drive gear attached to the stub shaft, two idler gears, and a driven gear that attaches to the wheel hub. Final gear ratio is 11⁄2 times the factory 3.55 ring-and-pinion, or 5.32:1, plus the portal adds 5 inches of ground clearance to the differentials. And since the wheel mount surface has been lowered, less suspension lift is required to clear big 40-inch Nittos.