So I was at my lhs yesterday and the owner informed me that traxxas has supposedly fixed the problems with Titan 550 motors going out. She explained to me that the metal torque band was the culprit. She showed me a updated Titan on a sunuvadiggerr RC. She also informed me that traxxas was not really advertising this info as there are still a bunch of older style titans yet to sell. Why did she have a new style Titan on the sunuvadigger I don't know. What she gathered was the metal torque band was holding in heat and burning up the motors. Don't quote me on any of this info as I tend to forget and have a short attention span lol. If its true then good for traxxas for FINALLY addressing the issue. Nothing worse than seeing a kid with a new stampede with a burnt motor. I think traxxas should throw all the older titans in the garbage. I hope my info is correct and thank you for letting me share.