Castle Creations Mamba Monster XLX 8S 1/5 ESC/Motor Combo w/1721 Sensored Motor (1260kV)The Castle Creations Mamba XLX 2 1 5 Scale Sensored Brushless Combo with 1721 1260Kv motor is a product guaranteed to redefine the limits of large scale RC. Though it shares the name of its predecessor, the Mamba XLX, this is an ESC that lives in a class of its own. Reengineered from the ground up, the Mamba XLX 2 is packed with a potent combination of design, hardware and software advancements that will set a a higher standard for large scale power