I don't know, sometimes things happen that you have to relate to purchase price.  These cars are way cheaper in price than a lot of stuff out there.  Go buy a E Revo  for $670 and more than likely the ESC won't give you any problems.  I have a Caldera 10E and also stripped out the front steering knuckles several times.  This was the only weak spot I've had on the truck.  After replacing them with the factory replacements I eventually swapped them over to aluminum.  Since doing that last August the only thing that has broken since has been the front bumper post and a stripped spur gear.  Considering you can buy one of these trucks on ebay for around $180 shipped, I'll keep on trucking with my Redcats.