Key Features 4-Pole design for increased torque and improved overall efficiency Sensorless brushless technology for improved performance and maintenance free operation Standard 1/8 in shaft 3.5mm bullet style connectors 4000Kv motor included Waterproof ESC Pre-wired with high-current EC3 connector and 3.5mm bullet style connectors NiMH and Li-Po compatible 70A can handle 4?9 cell NiMH or 2S?3S Li?Po Built in Cooling fan Easily programmable through integrated setup button Compact design for easy fit into most any 1/10th scale on and off road platform Overview Onyx brushless systems offer price sensitive enthusiasts the ultimate solution when searching for an easy and affordable method of stepping up to brushless power. Designed for most 1/10th scale on and off road electric vehicles, each system comes with everything users need to upgrade to brushless power. All systems include a potent 4-pole sensorless brushless motor and 70A waterproof ESC that comes pre-wired with a high-current EC3 connector. The ESC is Ni-MH and Li-Po/Li-Fe compatible and was designed to handle up to a 9 cell Ni-MH pack or 3S Li-Po/Li-Fe. Onyx brushless systems are compatible with most 1/10th scale on and off?road electric vehicles including 1/10th scale ECX, Losi, ARRMA, HPI, Associated and many more.