Not for the fainthearted...

Being not a person who enjoys racing around in a vehicle that is likely to go off at some weird angle and leave you dangling over the edge of a cliff, nor someone who particularly enjoys racing around inhospitable countryside in a four-wheel drive being whiplashed by a passing tree, nor someone who has much mechanical know-how, I can't tell you exactly what RZR stands for.  But the following is a photo of the 2011 XP RZR.  

That gives you - and me - an idea of what we're talking about.   So when a company called Polaris brings out Polaris RZR accessories this is what the accessories are for.   There you go, wasn't that helpful?

As you can see, the vehicle is something along the lines of what I'd think of as a beach buggy, though it obviously has potential to be a great deal more.   In this video you can see it racing over sandy ground filled with barely visible rocks and other nasty obstacles likely to tip the average vehicle on its nose, or cause the sump to fall out.  The wheels seem to pretty much have a life of their own.   In fact they look to me to be apt to leap off the vehicle and go racing off on their own little beach trip.   Heaps of fun for those who have no respect for life or limb....