https://www.youtube.com/watch?feature=player_embedded&v=toQsSQ8TLN4#t=0
 The RZR 570 comes with Polaris' On-Demand, selectable full-time AWD system that monitors wheel speed variance, automatically locking the front diff when wheel speed varies by more than 5-percent. The RZR also comes standard with unlocking rear-diff Turf Mode - exceptionally handy when navigating precious fescue.