I have purchased a couple from Rotor Ron, as he tunes them. Always fast motors from Ron. But the other day, someone purchased a "Team Spec" one of these, and he sure seemed to at least as fast, if not faster than I was. Now mine is older, and I've ran the crap out of it. There is also gearing, battery resistance, and holding speed through corners. My only issue with this motor, is I have stripped out the screws in one. They did warranty it, as it was brand new. Another one I fried when I accidentally plugged my Maclan Pro speed control in backwards. Yep, friend a $220 speed control and a $160 motor. Now I purchase the HW Pro speed controls, as they can survive being plugged in backwards. Note, I race a lot, and run these in 4wd Buggy and 2wd SCT.