A little help. There are 2 motors under the Super Sport Brushless System. The 4300 and the 5800. The 5800 is faster and has a limiter to try to replicate stock, but it doesn't do that as well as the 4300. For all out speed, in unlimited mode, go with the 5800. Compared to an Orion 12x2, I don't think it will be as fast, although the torque shoul dbe right up there.