Note This is a set included a ESC Motor 10BL120 G2 ESC 540 motor and you need to choose which motor do you want Rocket 540 V3 Motor Features CNC Machined Billet Aluminum Heatsink Can High Purity Copper Windings Maximizes Conductivity High Power Solder Tabs Removable Replaceable Rotor Powerful Sintered Neodymium Magnet Precision Engineered for Maximum Energy Conversion Adjustable Timing Compatible with any Sensored Sensorless ESC Dual sensor port IFMAR ROAR Compliance Hobbywing QincRun 10120BL Sensored ESC Features High performance reliable race ready ESC The compact size is suitable forvarious car chassis The built in auto identification system recognizes sensored or sensorless brushless motors Core competition program forexcellent control feelmultiple programmable items 8 steps of timingadjustments 4 steps of maximum brake force adjustments 8 steps of dragbrake force adjustments 4 steps of initial brake force adjustments 9 steps ofacceleration punch adjustment from soft to very aggressive to fit fordifferent kinds of cars tires and tracks Multiple protections include Lowvoltage cut off protection for Lipo or NiMH battery Over heat protection Throttlesignal loss protection Motor Lock up protection Throttle out of control protection overload protection for escort escort reliability and durability have been greatly improved One button to set the ESC and easy to reset all parameters to the factory default settings Compatiblewith optional device th