EMAX ECOII 5215 Brushless Motor

The EMAX ECOII 5215 is a high-efficiency, large-format brushless motor engineered for long-range FPV platforms, heavy-lift multirotors, and cinematic builds demanding sustained power and precision. Built around a 24N28P stator configuration with a compact Ø52 × 46.5mm profile, the ECOII 5215 delivers exceptional thrust-to-weight efficiency across a wide KV range — from 230KV on 12S with 17" props all the way to 420KV on 8S with 13" props. Five KV options let you dial in the exact power curve for your airframe and battery configuration.

Key Features

Stator configuration: 24N28P
Available KV ratings: 230KV / 260KV / 300KV / 360KV / 420KV
Wide compatibility: 8S and 12S builds, 13"–17" propellers
5mm steel bearing shaft
25×25mm — 4×M3 mounting pattern
300mm 14AWG silicone wire leads
Precision bearings and anodized finish
Multi-strand winding for smooth, efficient power delivery

KV / Cell / Propeller Guide

230KV — 12S — 17" props (HQ1708, GF1708, 1708)
260KV — 12S — 15" props (HQ1507, GF1507)
300KV — 8S / 12S — 13"–17" props (HQ1309, 1507, HQ1708, GF1708)
360KV — 8S — 13"–17" props (HQ1308, GF1308, HQ1507, HQ1708)
420KV — 8S — 13"–15" props (HQ1309, GF1309, 1507, HQ1507)

Specifications

Motor Model: ECOII 5215
Stator: 52 × 15mm (24N28P)
Dimensions: Ø52 × H46.5mm
Weight (with wire): 390g
Bearing Shaft: 5mm
Lead: 14AWG 300mm
Mounting: 25×25mm — 4×M3
KV Options: 230KV / 260KV / 300KV / 360KV / 420KV

Package Includes

4× M3×8 screws
1× M5 nylock nut
1× Paddle gasket
1× Propeller shaft sleeve