The Kuchar Step Rotor is heavier than a factory OEM rotor, providing   more inertia to run smoother, especially in tougher conditions. A Kuchar Rotor pulls easier and provides smoother threshing, which uses less fuel.  The Kuchar Step Rotor doesn’t break up material, which loads the shoe. That means there’s less grain loss over the rotor and a cleaner sample in the hopper with less broken kernels.  All of these results mean more profit for you.