Take to the Skies with Spektrum Avian Brushless Motors for Fixed-wing Models: The combination of superior performance, high reliability and user-friendly features makes the Spektrum Avian Brushless Motors an excellent choice for your next aircraft project. Plus, the wide selection means there's Avian Brushless motor that's ideal for whatever the application, including brushed-to-brushless upgrades as well as combustion-to-electric conversions. Equip your airplane with an Avian motor to compliment your Smart Technology equipped models! Key Benefits: Rapid Acceleration and Extreme Torque: Expertly engineered to deliver fast, smooth and precise acceleration and power. Reliable and Virtually Maintenance-free: Equipped with double-shielded sealed bearings, precision balanced motor bell and gold-plated bullet connectors. Excellent Cooling: Engineered to help airflow move through the motor for efficient cooling during and after flight. Features: Lightweight design Powerful and durable Rare-Earth Neodymium magnets 14-pole stator for smooth and precise propulsion Includes all required hardware: preinstalled gold plated bullet connectors, aluminum motor mount, prop adapter and female ESC connectors Perfect match for the Spektrum Smart Avian 120 amp HV ESC Perfect electric conversion upgrade for 65cc size gas combustion power systems Important Specs: Recommended Voltage Range – 33.3-55.5V / 9-15S LiPo Recommended Propeller Range – 22x10 to 26x12 Propeller Recommended Model Flying weight – 3D 11.79kg (26 lbs) - Sport 19.1kg (42 lbs) Max Wattage – 4400w Max Current – Max Burst Amps (150A) Max Continuous Amps (135A)