Hobbywing QuicRun Fusion Pro Brushless system with integrated speed controller (ESC) for 1/10 scale Crawlers. Can also be used as an affordable simple waterproof brushless system in any 1/10 car, reverse lock-out is available via programming. Speed Controller integrated into the motor can, more compact, fewer wires, no ESC to mount. Sensored system for precise control, ideal for crawlers but drives great in any car with rapid acceleration and no cogging. Integrated Speed Controller means reliable overheat protection for ESC and motor. Standard 550 size 36x58mm long motor can fits most 1/10 scale crawlers and cars. 60A ESC, 2300kv motor, supports 2-3s LiPo, 6-9 cell NiMH. Uses standard Hobbywing car ESC program card (pictured, optional), also programmable via the power button. See pictures for further details.