nubs, i have been riding in my muddy water swamp and mud pit for days. everything works great !! the chains and sprockets get muddy of course but i just hose them off when done. some of the chain lubes available are very good. i like the lower gearing also.i used marine grease in the bearings. so far so good. keep riding some every day to see if there are any changes i need. john boy va. looking forward to a good snow !!