Features for Motor: Waterproof, suitable for all conditions of competition. 3665 3100KV brushless motor, specially designed for 1/10, 1/8 RC car. 4 poles 12 slots high torque motor design. CNC machining of 6061 T6 billet aluminothermic groove. High purity copper winding maximizes efficiency. High RPM ABEC5 super bearing. Precision balanced rotor for optimum reliability and maximum speed smoothness Stator - ultra thin (0.35 mm) wafer Removable/replaceable rotor. Features for ESC: Waterproof and dustproof all-weather competition(note: remove cooling fan before using ESC in water Clean and dry immediately after use to avoid joint rusting. Designed for RC cars, with excellent start, acceleration and linearity. Compatible with sensorless and brushless motors. Strong resistance to current and good heat dissipation performance. Multiple protection functions: low-voltage cut-off protection/overheating .protection/throttle valve signal loss protection/motor blocking protection for lithium battery or nickel battery. Easy to program and compatible with pocket program CARDS. Specification: Material: Metal and electronic components Color: As Pictures Shown Brand: SURPASS-HOBBY Motor Model: 3665 Size: 36 * 65mm/1.4 * 2.6in KV(RPM / V): 3100KV Poles: 4 Watt: 1400W Max Voltage: