Well today was a real test in durability for my kraton 4s i have kissed metal posts with one tire a few times and arms held up completly fine i was toward the end of the life of my 4s pack and i decided to wheelie and hit the leaves of the trees but instead i accelerated full speed into the tree itself made a loud noise and the car lunched in the air and landed on all 4 i told my brother "my chassi is dea there is no way" but surprised we were nothing absolutly nothing i was there checking for damage but there was absolutly nothing. I was completly mind blown for a bit could not belive it. I think what saved my chassi was the chassi brace who i have unthreaded the nut to make it harder for the chassi to flex and this is what saved the whole car. Handling was a bit squirly maybe because i noticed my trim was off a litt'e who i fixed on the way back home. Only damage when i was cleaning was the bearing holder one side snaped but was hanging out because of the shoegoe i have put when i installed it? One of the only smart decisions of my life. Body one little piece has ripped off i think i need a new body but jennyrc is out of stock and its going to take a while