i was reading on the novak website that you need to upgrade to heavy duty diff gears. I have read around in the forum about people upgrading to an hv-maxx and haven't herad anyone mention this. Is it nessecary and just not mentioned or does it not make muchy of a differance over stock?
i'm still far away form getting an hv, i must take tiny steps over many moons.
The ace Racer