EMAX ECOII 4315 Brushless Motor

The EMAX ECOII 4315 is a high-efficiency, large-format brushless motor built for long-range FPV platforms, heavy-lift multirotors, and cinematic builds running 13"–15" propellers on 6S to 8S battery configurations. Sharing the same 50.6mm diameter as the 4320 but with a shorter 59.2mm stator height, the ECOII 4315 offers a lighter 245g profile while maintaining the same 12N14P framework, 6mm steel shaft, and 30×30mm 4×M4 mounting pattern. Four KV options from 360KV to 520KV let you match the motor to your airframe and battery setup.

Key Features

Stator configuration: 12N14P
Available KV ratings: 360KV / 380KV / 450KV / 520KV
Optimized for 13"–15" propellers on 6S–8S builds
6mm steel bearing shaft with CW thread
M6 prop adapter shaft thread
30×30mm — 4×M4 mounting pattern
400mm 16AWG silicone wire leads
Precision bearings and anodized finish
Multi-strand winding for smooth, efficient power delivery

KV / Cell / Propeller Guide

360KV — 6–8S — 13"–15" props (GF1308, HQ1310, HQ1507)
380KV — 6–8S — 13"–15" props (HQ1310, GF1309, HQ1507)
450KV — 6–8S — 13" props (HQ1308, HQ1309)
520KV — 6S — 13" props (HQ1308, HQ1309, HQ1310)

Specifications

Motor Model: ECOII 4315
Framework: 12N14P
Dimensions: Ø50.6 × 63.7mm
Weight (with wire): 245g
Bearing Shaft: 6mm
Prop Adapter Shaft Thread: M6
Shaft Thread: CW
Lead: 16AWG 400mm
Mounting: 30×30mm — 4×M4
KV Options: 360KV / 380KV / 450KV / 520KV
Peak Current (360KV @ 6S): 63.5A | Max Power: 2992W
Peak Current (380KV @ 6S): 72.9A | Max Power: 2352W
Peak Current (450KV @ 6S): 75.4A | Max Power: 2428W
Peak Current (520KV @ 6S): 74.6A | Max Power: 1793W

Package Includes

4× M4×12 screws
1× Steel M6 nylock nut