Hundreds of hours later, our Cummins-swapped Bronco takes on the Rubicon trail for its first test run—with massive climbs, tight canyons, near rollovers and desert chaos. #offroadbuild #bronco4x4 ...

If you’re an off-road junkie, you’ve probably heard of the Rubicon Trail. This 22-mile beast in California’s Sierra Nevada is like the holy grail for 4x4 enthusiasts. It’s got everything: gnarly rock ...