well my car might be raced but not likely, and my brother's t max probly won't either, we live in the mountians and it tends to be hilly around here, right now we just play with the cars on the street due to snow, but i think in the summer that we will probly be playing more in our yard. I know that it helps deliver all of the power to the wheels cause I 4wheel im my jeep and have installed a locker in it.I was just wondering how it would work on an rc car and how it if any will help besides in a 4wheeling aspect. I was hoping that it might help on road performance aswell cause I know alot of fast cars are spooled and posi locked in the rear.also a friend of mine has a 2 wheel drive and it sux up here so we were wondering if locking it would make it more like a 4 wheel drive car.oh and why not lock it if I race?