GEPRC EM4214 660KV Motor for Long-Range FPV Drones – 2120W, 6S, 12–14 Inch Prop, 90A Peak Current

Overview

The GEPRC EM4214 660KV Motor is part of the high-performance EM series, tailored for 6S-powered long-range FPV drones using 12–14 inch propellers. Built for thrust, efficiency, and durability, this motor delivers up to 2120W of peak power and draws 90A at full throttle, making it ideal for payload-capable endurance flights such as mapping, surveillance, and long-range exploration.

Constructed from 7075-grade CNC-machined aluminum and featuring a reinforced M6 steel shaft, the EM4214 is designed to withstand high torque loads. Its 12N14P configuration, N52H magnets, and low interphase resistance (25mΩ) enable rapid, responsive control and reliable thermal performance.

Tested Performance Data (6S, 25.2V)

• Best efficiency observed between 20–50% throttle with over 10 g/W system efficiency

• Max torque: 1.2935 N·m @ 9878 RPM with GEMF AN 1310

• Max system input power: 2121.3W

• Full-throttle current draw: 90.57A

Key Features

• Designed for long-range FPV platforms with 12–14 inch props

• 660KV motor optimized for 6S (25.2V) LiPo systems

• Up to 2120W of power output, peak current 90A

• High-strength M6 steel shaft resists bending under heavy loads

• High-torque magnetic circuit design supports large-pitch props

• Low internal resistance (25mΩ) for power-efficient operation

• 12N14P stator, N52H magnets, and NMB bearings

• Long 800mm 14AWG silicone leads for versatile builds

• Compatible with 80A–100A ESCs

• Mounting pattern: 30×30mm standard

• Lightweight: 246g with wire

Specifications

Package Includes

• 1 × EM4214 660KV Motor

• 4 × M4×10 Semi-Spherical Head Screws

• 1 × M6 Anti-Slip Flange Nut

Applications

Perfect for long-endurance FPV drones, aerial mapping, agricultural drones, or heavy-lift platforms that require reliable thrust, thermal efficiency, and torque output with 6S battery setups and large props (12–14 inch class).

Details

The EM4214 motor has a KV rating of 660kV and a maximum wattage of 2120W. It can handle a peak current of 9A and features an interphase resistance design. The propeller is 12-14 inches in length and is paired with a N52H magnet. The bearing type is high-temp, allowing for customization configurations up to 12N14P. Dimensions include a shaft diameter of d6mm and length of 49mm x 32.5mm, with mounting holes spaced 30mm apart and featuring M4 threads.

The thrust data motor system provides information on propeller type, voltage, throttle current, speed, and efficiency. The table shows values for different percentages of throttle input, including 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, and 100%. Values include thrust, torque, power, and efficiency.