power 90 Brushless Outrunner 325KvKey Features Equivalent to or surpassing the power of a 90 size, 2 stroke, glow engine for sport and scale airplanes weighing 8 to 13 lb (3. 6 to 5. 9 kg) Ideal for 3D airplanes weighing up to 10 lb (4. 5 kg) Ideal for models requiring up to 1800 watts of power High torque, direct drive alternative to inrunner brushless motors External rotor design for better cooling High quality construction with ball bearings and hardened 6mm steel shaft Includes