Item Type: RC Motor Material: Aluminum Alloy, Copper, Steel Weight: Approx. 538g/18.98oz Size: Motor Diameter: 40mm/1.57in 42mm/1.65in Motor Length: 82mm/3.23in (without shaft) Shaft Diameter: 5mm/0.20in Shaft Length: 20mm/0.79in Gold Plated Joint: 6.5mm/0.26in Model: 4282 Color: black and Red KV (RPM Volt): 2150kv Output Power: 3400W Maximum Voltage: 23V Maximum Current: 150A Number of Motor Poles: 4 IO: 2.5A Resistance (): 0.0056 Maximum Speed: 50000 Application: For 1/8 RC Car (for Traxxas, for Wltoys, for HSP)14 Pole Rotor: This RC motor is designed with 4 pole rotor, which has strong twisting force and stable output power, low friction, low noise and high accuracy. 2Sturdy: This RC motor hashardness aluminum CNC case, temperature resistant copper wires, 0. 2mm silicon steel sheet, which makes this motor high permeability, high silicon content, great insulation and heat resistance. 3Durable: This RC motor has explosion proof rotor, high toughness stainless steel output shaft, and accurate bearings to make the motor super durable. 4Detachable Structure: This RC motor is designed with detachable structure for easy cleaning and maintenance, which can effectively extend the life of the motor and improve efficiency. 5Temperature Sensor and Interface: This RC motor motor has built in temperature sensor and interface, which can realize motor overheating protection function when matched with ESC. 1 x Sensorless Brushless Motor 1 x Instruction