Traxxas 89086 4 1 10 Maxx with WiideMaxx VXL 4s Brushless 4x4 Monster Truck Rock and Roll Turntable increase speed about 11% increase speed about 11% Experienced industry insiders sat to discuss the project and lay plans to fit and finish the popular body to several popular chassis sets on the market FEATURES: 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 Waterproof Velineon® 540XL Brushless Motor Long format brushless motor 4 pole 2400 kV 5mm 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 85 inches (352mm) Shock Length: 4