Avian 4240-800kV Outrunner Brushless Motor

Spektrum - Item No. SPMXAM4670
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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.


  • 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 45 amp ESC
  • Perfect electric conversion upgrade for .28 size glow combustion power systems

Important Specs

  • Recommended Voltage Range – 11.1-18.5V / 3-5S LiPo
  • Recommended Propeller Range – 10x5 to 13x8 Electric Propeller
  • Recommended Model Flying weight – 3D 1769g (3.9 lbs) - Sport 3583g (7.9 lbs)
  • Max Wattage – 740w


11.1-18.5v (3-5S LiPo)
Outer Diameter
1.67" (42 mm)
Connector Type
3.5mm Bullet
Motor Size
Product Length
1.59" (40 mm)
Sport airplanes up to 7.9lbs (3583g) and 3D airplanes up to 3.9lbs (1769g)
Number of Poles
Product Weight
4.4oz (125g)
Recommended Prop Range
10x5 to 13x8 Electric Prop
Shaft Diameter
0.19" (5 mm)
Recommended Speed Control
Spektrum Smart Avian 45 amp ESC
RPM/Volt (Kv)
Maximum Burst Current
Maximum Continuous Current
Motor Type