Depends. We are an Xterra club and some of our Xcursions are doable by our 2-wheel drive brethren. That being said, most of the active participants are 4-wheel drive and are vocal in having 4-wheel drive Xcursions.

Some Xcursions, like the trash clean-up at the end of the month, are doable in a 2x4 if ya don't mind being strapped once or twice.

Here's a pic one of our members has posted:

It is available in several colors, to paying members of course.