Castle Creations 2535 4-Pole Sensored Brushless Motor - 680KVOverview The Castle Creations 2535 Sensored Brushless Motor (060 0120 00) is a massive, ultra high torque 4 pole motor engineered for extreme RC applications. With a 680KV rating tuned for high voltage operation, the 2535 produces enormous torque while remaining smooth, controllable, and durable under aggressive use. Built around Castle's latest motor technology, the 2535 features sensored startup for crisp low speed control, transitioning seamlessly