Castle Creations 1410 1Y 4-Pole Sensored Brushless Motor (3800kV)For more than a decade Castle has been providing award winning brushless sensorless motors to R C enthusiasts worldwide. In response to overwhelming requests by our customers, we have brought technological advancements together that will deliver unprecedented performance in sensored motor line. Features: Minimum Input Voltage : 2S Maximum Input Voltage : 3S Sensored Capable : Yes Recon G6 Certified Motor : No ROAR Certified Motor : Yes