bearing totally gone at 412 hours. started hearing a rattle about a month ago figured it was my front axle slop last knight i was on a short elk viewing expudition.when holly cow what a noise sounded like the whole bottom was falling out of this thing looked under there and the bearing was gone and the shaft had a groove around it from laying on the plate that holds the bearing could not tell if the bearing had sled back or what it was dark and i was mad. today i ordered the bearing and shaft figured what the hell another 106.00 in the money pit.bought new in 2007 rtv 900 replaced four u joints in the rear axle 5 rear bearing one half shaft rear axle and guest what the new u joints have zerk fitting now this carrier bearing not to mention the front drive shaft slop. this is my second rtv 900 first was a 2004 and this 2007. and i do take good care of my equipment. try to stay out of water and mud as much as possible. kubota needs to take a good look at some of there design rethink them. there fealling way to early if it had 4000 hours i say okay but 400 something wrong folk.