RE: YAMAHA 660 Grizzly 4x4
Have spent some time throwing some mud on the 660s. Great rig from what I can tell. Pull really well and can run up around 70mph in 2wd (although why anyone would want to go that fast is beyond me?). Not sure about the belt issue as far as longevity is concerned. But the ride is awesome busting down a pretty rough trail and woops you're running about 45mph.