for the shafts I use Losi 8ight- t 2.0 shafts and dxr8 stub axles. You have to mill out your outer bearing slot for bigger bearings.8x16. I have an online friend that does it, I can get you in touch with him. That goes for anybody. I have been waiting to post this info up on my thread. I still have a few steps before my maxx is perfect.