I'm running that motor on 2s and love it! Plenty of power and speed. I'm usung a MA 6Ah pack and getting 20minutes of high speed runs without a problem. If you want to try running 2s in a crt.5 this is the motor to go with! If you want to run 3s I would say the 3300kv(?) Medusa. For the little bit extra they cost I beleive they are far superior to any Feigao motor or the VXL motors. I was considering the 4600 CC motor when doing this build but was cautioned against it, would run hot no matter how I geared it I was told. Bought the Medusa and I'm very glad I did!