I have been hearing the 4 strokes sleds will run many more miles than the 2 stroke sleds. I do not have a 4 stroke. I was just commenting due to seeing a post of a 4 stroke with having 10K miles and someone stating it is just getting broken in. lol. I would have to disagree. Miles on a machine are miles. The suspension takes a beating along with clutching, gearing, track ect. Maybe the engine will last longer, but does the engine, being smoother, make the clutching last longer on a 4 stroke? I personally have not seen a 2 stroke with over 10k but I have not seen a 4 stroke either. It just seems to me when a machine gets that many miles or even close to that some items start to be neglected, suspension, clutching ect. What do you guys think? Al