Please, don't take me as a expert (especially in nitro) but I have messed with nitros in the past here and there, and to a point this goes with all rc cars, everything is replaceable (wether or not your local hobby shop carries those parts often depends on which car you get) but dont be afraid to bash it and, just have fun with it, like i said everything is replaceable, drive it how you want it, but make sure you do proper break in procedures first then have fun.