The Motor XING 2814 designed for bigger quads like 9-10 inch quad frames, which is with better efficiency in this range frames. The XING 2814 features adopt Japan NSK bearing, N52H arc magnets. It offers incredible thrust number, highly responsive and extremely smooth flight characteristics. The bigger stator size of 2814 allows it to provide instant power to save you from those crazy mountain dives last minute. It's a great motor if you're building bigger drones like 9 inch or 10 inch.