Traxxas 77076-4 X-Maxx: Brushless RTR Electric Monster Truck with TQi 2.4GHz Radio System & Stability, Colors May Vary FEATURES: Traxxas Stability Management (TSM): Superior tuning algorithms run on high-speed electronic components to control wheel spin and steering di INCLUDES: RTR X-Maxx Truck with Brushless Motor, Radio, ESC, Painted Body, Quick Start Guide and Maintenance Tools REQUIRES: Batteries: Two 3S LiPo 5000mAh or greater Battery Charger: Compatible with selected LiPo batteries Traxxas offers the #2990 Completer Pack