EMAX ECO II 2306 Brushless Motor

The EMAX ECO II 2306 is a brushless motor for 5-inch freestyle and racing quads, available in 1700KV, 1900KV and 2400KV variants. The 1900KV variant suits 4–6S builds prioritising balanced thrust and efficiency, while 1700KV favours heavier props or longer flight times and 2400KV delivers higher top speed on lighter setups.

Key features

• 2306 stator size pairs with standard 5-inch tri-blade and quad-blade propellers, with a 16×16mm motor mounting pattern

• 4–6S input voltage range requires an ESC rated for the chosen cell count with sufficient continuous current headroom — typically 35–45 A per motor for aggressive freestyle flying

• Three KV options let you tune the build for prop size, cell count and flight style without changing the frame or ESC stack

Specifications

• Stator Size: 2306

• KV Options: 1700KV, 1900KV, 2400KV

• Input Voltage: 4–6S (the 1900KV is rated 3–6S)

• Configuration: 12N14P

• Magnets: N52SH arc

• Prop thread: M5

• Bell diameter: 28 mm

• Max thrust: 1990 g on 6S (1900KV)

• Recommended props: 5-5.5 inch

Match the motor's KV to your typical cell count and propeller pitch — 1700KV for 6S with 5.1" props, 1900KV for 5S all-round use, 2400KV for 4S high-speed racing. Verify shaft diameter and bell threading match your propeller hardware before ordering.