89086-4 Rock N Roll Maxx®: 1/10 Scale 4WD Brushless Electric Monster Truck with TQi™

New Features WideMaxx® from the Start Longer chassis accommodates 6700 mAh 4-cell LiPo used in the X-Maxx Sledgehammer® Tires Six new colors VXL-4s™ Waterproof Electronic Speed Control 3s–4s LiPo compatible Built-in cooling fan Real-time telemetry via Traxxas Link Machined heat sinks 10-gauge silicone wire Integrated protection circuits LED status lights Velineon® 540XL Brushless Motor Long format brushless motor 4-pole 2400 kV 5 mm output shaft Aluminum heat sink Cooling fan 55+ MPH out of the box using single 4s LiPo battery (sold separately) 60+ MPH with optional gearing and single 4s LiPo battery (sold separately) Traxxas Stability Management® Helps prevents spinouts and loss of control Adjusts from off to 100% assistance from the transmitter TQi™ 2.4 GHz High Output Radio System Traxxas Link enabled 2.4 GHz 5-channel micro receiver (6533) with fail-safe security and integrated telemetry ports Automatically stores and loads settings for up to 30 Traxxas Link-enabled model