Description: 3665 3100KV 4Pole Brushless Waterproof Motor?5mm Hi-torque and high purity copper windings maximizes efficiency Compatible for 1/10 brushless RC cars boat -multi-mounting system for M3 screws Removable/Replaceable rotor, High RPM ABEC5 oversized bearings CNC machined 6061 T6 billet aluminum heatsink can, precision engineered for maximum energy conversion Precision balanced rotor, smoothness for best reliability and maximum RPM Specification: Model: 3665 KV(RPM/V): 3100KV Poles: 4 Watts: 1400W Max Voltage: