No motor damage problems have been reported to mpi on the 850. For as many as there were of these sleds sold I would assume there will be a few few motors go. Not near as many as Polaris though. Still haveing friends losing axys motors.
This is why these forums are terrible.
"not near as many as Polaris though"
Such a qualitative way to say something that is entirely quantitative.
"I've seen 2 850 motors go down, but we've had 8 Axys motors go down, seems the problem is XYZ" <---- maybe a better way to say something.
Otherwise you just sound like you are a fanboy of one company or another. It helps nobody.
I ride a Polaris but would willingly ride anything on the market. Everyone makes a good sled.
I haven't seen many 850s go down or Axys motors go down. All that have were under the "yeah, it was probably time to do a top end" moniker.
...and I'm around a lot of sleds between a rental fleet and my buds.