It took all day to change wear sleeves and pinion seals, front and rear. Also replaced cv shaft seals and front drives haft boot. Some say you can shift front diff forward to remove driveshaft, not going to happen. Remove as much as possible, makes the job that much easier. Only have 2500 miles on 2010 650XTP. I know some friends with 3 times than mine and they haven’t touched theirs. Happy I changed them.