Turnigy SK3 Motors are the next leap forward in motor quality and design. We instructed the engineers to source the best quality magnets, bearings and materials available to them and develop a motor that would not only rival, but surpass the quality of many leading motor manufactures on the market today. The result is an efficient, high caliber motor using quality double shielded bearings, sintered Neodymium magnets and a string wound stator ensuring an accurate and consistent winding each and every time. The Turnigy SK3 motors are suited to modelers who are seeking a quality brushless motor without compromise. Specs.Turns: 18TVoltage: 12S LipolyRPM/V: 149kvInternal resistance: 0.021 OhmMax Loading: 70AMax Power: 2250WShaft Dia: 8.0mmBolt holes: 32mmBolt thread: M4Weight: 840gMotor Plug: 4.0mm Bullet Connector