Avian 4240-800kV Outrunner Motor (SPMXAM4670)

Avian 4240-800kV outrunner brushless motor is a high-performance powerplant designed for fixed-wing RC aircraft and electric conversions, delivering rapid acceleration, strong torque, and smooth, responsive propulsion for both sport and scale flying. Whether upgrading a glow-powered model to electric or powering a purpose-built electric airplane, this motor offers the power and efficiency needed to achieve lively flight characteristics.

Built around a lightweight frame with a 14-pole stator and rare-earth magnets, it provides smooth thrust and efficiency, while double-shielded bearings and a balanced motor bell enhance reliability. It ships with essential hardware—gold-plated bullet connectors, an aluminum motor mount, a prop adapter, and female ESC connectors—for quick installation, and it pairs well with Spektrum Smart Avian ESCs. Compatible with 11.1-18.5V (3-5S LiPo) packs and prop sizes from 10x5 to 13x8, it suits electric fixed-wing models from roughly 1.8 kg up to 3.6 kg and can deliver up to 740W of power, with a cooling design to help maintain performance in flight.