The Rubicon adds 17-inch alloy wheels, 32-inch tires, a heavy-duty Dana 44 front axle, a shorter 4.10 rear-axle ratio, an upgraded transfer case with a lower crawl ratio, electronic front and rear locking differentials, an electronically disconnecting front sway bar, rock rails, automatic headlamps and the under-hood insulation, air-conditioning plus the leather-wrapped steering wheel and shift knob, coat hooks, a 115-volt outlet and satellite radio.