Nissan Titan 4WD PRO4X is a trim option for the Nissan Titan, a full size pickup truck. It is a four wheel drive model that offers more off-road capability and features than the regular 4WD and 2WD models. It features all-terrain tires, skid plates, Bilstein shocks, a locking rear differential, and hill descent control. It also includes an upgraded interior with soft-touch materials, power-adjustable front seats, heated front seats, a power sliding rear window, and an 8-inch touchscreen display.