They will take a lot and an LRP is an excellent choice for an X. If you do a direct 40 mph crash into a solid object with the throttle wide open, you will kill the front pinion and maybe some suspension parts. They are like all non race bred machines though, they seem to cost something all the time to keep running. Normally it is just small stuff. If you are really reckless, buy a Flux differential and put it in the front. I just bought two and hope to go runone hard this weekend to see if they break. X parts are cheap Ebay is just loaded with them. Glen