Sledhead is closer to correct than you might think, not defending anyone hear as they should be more reliable,but common sense says it's my fault for not buying a 600 and forcing the man to make high hp 800, then epa. Just a few short years ago if you could run a mod motor of 140 hp and have it last 20 laps you were the chit in the sled racing world now we bitch cuz stock is only 150 hp, u want problems buy an outboard, jet ski ect, is everyone doing a good job summerizing? an old honda 300 fourtrax will outlast the rubicon cus it has no hp and no suspension so nothing to break but we don't want that we chose the speed and handling, anyway sure hope they all last forever.