Well, everything can happen, theres a risk with speedrunning. But more durable parts will hold up better, but to a realistic level. Driving 60+ mph and crash, will brake most of the things anyway. If we believe that our build will end in a catastrophy any way, then its no point selling aftermarket parts, or any rc going above 20 mph.
As I said before, I dont believe these parts will bring the rustler to 70 mph alone, or even above, I have other reasons for upgrading to aftermarket parts. How ever, im upgrading the car for straight line running, like weight, foams, lower suspension, etc., and hence the title of this thread. If I would have throw money for a basher project, or a track runner, I would have called the thread "RPM VXL Rustler, track setup", and I would have used parts suited for circuit racing instead.
You are giving a good example of "money, but no brains", as your friend wrecked your truck.