This 540 13.5T Brushless Motor is built from the best materials available, and is designed to provide both quality and performance at an affordable price. And it&#39;s with high quality aluminum alloy parts that are produced on the latest CNC milling machines. The 540 13.5T brushless will provide more power and longer run times with its high efficiency.<br><br>Features:<br>CNC Machined Billet T6 Aluminum Heatsink Can.<br>High Purity Copper Windings Maximizes Conductivity.<br>High Power Solder Tabs.<br>Removable/Replaceable Rotor.<br>Powerful Sintered Neodymium Magnet.<br>Precision Engineered for Maximum Energy Conversion.<br>Adjustable Timing.<br>Compatible with any Sensored/ Sensorless ESC.<br>IFMAR, ROAR Compliance.<br><br>Specification:<br>Turns: 13.5T<br>Max Current: 49A<br>Watts: 190W<br>Can Size: 540<br>Sensored: Yes<br>Can Diameter: 36mm<br>Can Length: 50mm<br>Shaft Diameter: 3.175mm<br>Shaft Length: 13mm<br>Weight: 173g/6.1oz<br>Max voltage: 3.7V(1S)-11.1V(3S)<br>Package size: 10 * 8 * 6.3cm / 3.9 * 3.1 * 2.5in<br>Package weight: 203g / 7.2oz<br><br>Note: there&#39;s some little error from human measuring.<br><br>Package list:<br>1 * 540 13.5T Sensored Brushless Motor