It's a tiny bit faster than the pro4 4000kv not the 4600kv. I could probably go up a tooth and fix that and still have the lighter weight motor. I ran the ballistic 4.5 for a while and it wasn't as good as either the reedy or tekin. I had 2 ballistic 4.5's 550's, one with a high torque rotor and a ballistic 5.5 so I think im a fairly good judge. I also ran 14t pinion on the 4.5 ballistic but with a mmp esc and it was to soft. I ran the ballistic 4.5 on a rx8 in my scte and it was a beast. Im going to the throw the reedy in that.