Castle Creations Mamba Micro X2 Waterproof 1/18th Scale Brushless Combo (8200Kv)The Castle Creations Mamba Micro X2 Waterproof 1 18th Scale Brushless Combo with 0808 8200Kv motor is the perfect upgrade for 1: 18 scale RC vehicles, up to 2S LiPo and weighing in at up to 1. 5lbs. The Mamba Micro X2 ESC increases the maximum input voltage to 4s, with added DATA LOGGING and CRYO DRIVE TECHNOLOGY that allows the ESC to run cooler and more efficiently at partial throttle. Like its predecessor, it is waterproof* and offers SENSORED