i hate to tell you but they all break. its part of the game. may parts are made to fail if you ask me, these parts that fail also keep other parts from breaking. if you plan on playing with it a lot, you'll be working on it all the time.
that t maxx tho. dont think my brother has replaced a thing on it yet but glow plugs. he dont use it a whole lot but did more when he first got it. you can pretty much hit a 6 inch tall curb wot and it just goes up the curb like nothing happened.
theres vids of guys jumping houses and they hit the ground and keep gong, violently too.