Axisflying AZ4218 640KV 5-12S Brushless Motor

The Axisflying AZ4218 640KV is a large-stator brushless motor for heavy-lift FPV and X-Class builds running 5S to 12S LiPo packs.

Key features

• 4218 stator, 42 mm in diameter and 18 mm tall, for the torque that large propellers demand

• 640KV winding rated from 5S to 12S LiPo (18.5 V to 44.4 V nominal)

• Supplied as a single motor: a quad needs four, an X8 cinelifter eight

Size the propeller and ESC from the maker's thrust data for the cell count you fly: at the same KV, the motor turns a given prop far faster and draws far more current on 12S than on 6S, so a prop and ESC that suit 6S can be overloaded at 12S.