Feature: 1. Sensored Type: Has built in temperature sensor and connecting interface, matching with ESC can achieve motor overheating protection function. 2. 4 Pole Rotor: 4 pole rotor design, has strong torque and stable output, able to provide a high driving power for a satisfying using experience. 3. Detachable Design: Has detachable design, convenient for cleaning and maintenance, effectively prolong using life and improve efficiency. 4. Constituent Part: Composed of high hardness aluminum CNC shell, high temperature resistant copper coil and 0.2mm thickness silicon steel sheet. 5. Powerful Tool: Explosion proof rotor, high toughness stainless steel output shaft, high accuracy high quality bearings have create the super durability of motor together. Specification: Item Type: RC Brushless Motor Material: Aluminum Alloy + Copper Color: Black Product Model: 3660 KV (RPM/Volt) : 4250KV Application: For 1/8, 1/10 Remote Control Vehicles, Like For Tamiya, For Traxxas Product Size: Motor Diameter: Approx.36mm/1.4in Motor Length: Approx.60mm/2.4in(Excluding Shaft) Axle Diameter: Approx.5mm/0.2in Shaft Length: Approx.17mm/0.7in Weight: Approx. 276g / 9.7oz Wattage: 1200W Maximum Current: 100A Maximum Speed: 50000 Empty Load Current: 5.0A Motor Pole Number: 4 Internal Resistance(Ω): 0.0038. Package List: 1 x 3660 Brushless Motor4 x Screw1 x Manual Note: 1. Please allow 1‑3cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.