HobbyStar 3660 4-Pole Waterproof Brushless Sensorless Motor for RC Car, Truck 3800KV, 3.5T

So much power... I put this in a red at blackout to replace a 550 brushed system and it launches so hard on stock gears that to does back flips... Even on a higher gearing (55t spur has a 18t motor gear stock, I went to 21t) and 3s lipo, you can't put the throttle all the way down until you are already going pretty fast or it will just corkscrew from all the Torque. For reference, the brushless pro version of this car uses the 55t/18t gears with a f540 motor of the same 3800kv and is pretty fast but way easier to control. The 3660 size and high quality of this motor just makes a huge performance jump, especially when on 3s.