1、High torque motor with 4-pole and 12-slot design. T6 square aluminum radiator with CNC process. 2、Precise design for maximum energy conversion. The 3660 4-pole non-inductive brushless motor is designed to provide high quality and great performance. 3、Ultra-thin (0.2mm) lamination stator. Removable and replaceable rotor. 4、High purity copper winding maximizes the efficiency. High RPM ABEC5 oversized bearings. 5、Precise balanced rotor with great smoothness, reliability and maximum RPM. Features: 1. High torque motor with 4-pole and 12-slot design. T6 square aluminum radiator with CNC process. 2. Precise design for maximum energy conversion. The 3660 4-pole non-inductive brushless motor is designed to provide high quality and great performance. 3. Ultra-thin (0.2mm) lamination stator. Removable and replaceable rotor. 4. High purity copper winding maximizes the efficiency. High RPM ABEC5 oversized bearings. 5. Precise balanced rotor with great smoothness, reliability and maximum RPM. 6. It is made of high quality aluminum alloy with the latest CNC milling machines, and designed with high power and rotation speed to provide longer run time for 600-800mm RC boat. Specification: Item Type: RC Boat Part Motor: 3660 KV (RPM/Volt): 3,500KV Motor Diameter: Approx. 36mm/1.4in Motor Length: Approx. 60mm/2.4in Motor Shaft Diameter: Approx. 5mm/0.2in Motor Shaft Length: Approx. 18mm/0.7in Fixing Screw Hole Center Distance of the Motor Front Cover: M3 screw 25mm for 3 pairs Motor Outlet Length: Approx. 8cm/3.1in, 4 mm banana head Motor Maximum Power: 1700W Peak Current: 3500KV 106A, 2100KV 70A Package: Package Size: Approx. 112x70x40mm/4.37x2.73x1.56in Package Weight: Approx. 246g/8.61oz Package List: 1 x Motor