Speed and power are not required in rough off-road driving. In low-range 4WD, the low gearing and low speed of Jeep Brand 4x4 vehicles at idle will generally pull you over obstacles. In many cases, with manual transmissions, letting the clutch out slowly and allowing the vehicle to crawl over obstacles in the lowest gear is the best scenario. As a matter of fact, on the Rubicon Trail, the average speed is a mere 1-5 miles per hour.