EMAX ECO II 3115 Brushless Motor (400KV/500KV/640KV/900KV) for 9–10 Inch Long-Range & Cinematic Drones

Overview

The EMAX ECO II 3115 is a high-torque brushless motor built for 9–10 inch builds, offering four KV options—400KV / 500KV / 640KV / 900KV—to match long-range, cinematic, and heavy-lift needs. A durable structure and efficient cooling deliver stable power, low noise, and long service life. Choose the KV that fits your prop size and voltage (4S–12S) for maximum efficiency and flight time.

Key Features

• High performance and reliable power delivery

• Efficient cooling for sustained output and motor longevity

• Rugged construction with precision manufacturing

• Multiple KV options to match 4S–12S powertrains

• Ideal for 9–10 inch long-range and cinematic builds

• Great value upgrade for new builds or replacements

Specifications (by KV)

What’s Included

• 1× EMAX ECO II 3115 Motor (select KV: 400/500/640/900KV)

• 1× Hardware kit

Compatibility & Use Notes

• Match ESC rating to the peak current for your KV (allow headroom).

• Use props within the recommended size to avoid over-current.

• Verify frame clearance for 9–10 inch propellers.

Details