I spend a few months a year working near Ridgecrest in the northern Mojave and while there are hundreds of miles of OHV trails to follow there is nothing very inspiring.
If I were you I would keep driving west for another hour until you get to Kernville in the southern Sierras and you’ll find some of the best trails in the States (do a YouTube search for ‘Cannell Trail’ for proof). Normally at this time of the year snow would restrict you to the lower level trails but it looks like its pleasantly warm over there – 21 degrees and no snow on Mt Whitney so it should all be open. Mountain River Adventures in town run shuttles into the mountains and will be able to give you some pointers.