Name: EMAX RSIII 2306 FPV Racing Motor - 1800KV/2100KV/2500KV, 27.3x32mm, 4mm Shaft, M5
SKU: A2380046826
Availability: InStock

Description
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Overview

EMAX RSIII 2306 is an FPV racing motor offered in 1800KV, 2100KV, and 2500KV options. It is designed for 5-inch propeller builds and features a 4mm titanium alloy bearing shaft and 20#AWG 120mm motor leads.

Key Features

KV options: 1800KV / 2100KV / 2500KV
Motor size: 2306 (motor dimensions: phi27.3 x 32mm)
4mm titanium alloy bearing shaft
Stator configuration: 12N14P
Lead wire: 20#AWG, 120mm
Mounting pattern: 16mm (4 x M3)
Propeller guidance: 5″ to 5.5″ (variant dependent)

Specifications

Mechanical

Model	RSIII-2306
Motor dimensions	phi27.3 x 32mm
Mounting	4 x M3, 16mm pattern
Shaft thread	M5
Bearing shaft	4mm (titanium alloy)
Framework	12N14P
Lead	20#AWG, 120mm

Electrical (by KV option)

Item	RSIII 2306 1800KV	RSIII 2306 2100KV	RSIII 2306 2500KV
Idle current (10V)	1.1A	1.4A	1.8A
Internal resistance	68mOhm	57mOhm	43mOhm
No. of cells	3-6S	3-6S	3-4S
Propeller	5″-5.5″	5″	5″
Peak current	34A (6S)	46A (6S)	43A (4S)
Max power	860W (6S)	1160W (6S)	720W (4S)
Weight (W/O silicone wire)	27.9g	27.8g	27.7g

Payload Test (RSIII 2306)

RSIII2306-1800KV (25.2V)

Propeller	Voltage (V)	Current (A)	Thrust (g)	Power (W)	Efficiency (g/W)	Speed (RPM)
DALPROP Cyclone 5040-3propeller	25.2	2.9	300	73.08	4.11	15200
5.6	500	141.12	3.54	19300
9.0	700	226.80	3.09	22800
27.9	1680	703.08	2.39	Max
DALPROP Cyclone 5050-3propeller	25.2	2.9	300	73.08	4.11	12600
5.8	500	146.16	3.42	16500
9.8	700	246.96	2.83	18900
33.5	1730	844.20	2.05	Max
DALPROP Cyclone F5046-3propeller	25.2	3.0	300	75.60	3.97	13800
5.8	500	146.16	3.42	17500
9.6	700	241.92	2.89	20700
32.5	1700	819.00	2.08	Max
HQ 54.33	25.2	2.8	300	70.56	4.25	14300
5.5	500	138.60	3.61	18500
8.9	700	224.28	3.12	21800
29.8	1720	750.96	2.29	Max
HQ 54.83	25.2	2.8	300	70.56	4.25	13200
5.6	500	141.12	3.54	17200
9.2	700	231.84	3.02	20200
34.1	1780	859.32	2.07	Max
GF 5045-3	25.2	2.8	300	70.56	4.25	15300
5.6	500	141.12	3.54	19300
9.0	700	226.80	3.09	22800
30.6	1670	771.12	2.17	Max

RSIII2306-2100KV (25.2V)

Propeller	Voltage (V)	Current (A)	Thrust (g)	Power (W)	Efficiency (g/W)	Speed (RPM)
DALPROP Cyclone 5040-3propeller	25.2	3.1	300	78.12	3.84	15400
5.9	500	148.68	3.36	19100
9.7	700	244.44	2.86	22800
36.1	1820	909.72	2.00	Max
DALPROP Cyclone 5050-3propeller	25.2	3.1	300	78.12	3.84	12800
6.2	500	156.24	3.20	16300
10.1	700	254.52	2.75	19100
46.5	1920	1171.80	1.64	Max
DALPROP Cyclone 5046-3propeller	25.2	3.0	300	75.60	3.97	13600
5.9	500	148.68	3.36	17200
9.9	700	249.48	2.81	20300
46.2	1960	1164.24	1.68	Max
HQ 54.83	25.2	2.9	300	73.08	4.11	13300
5.9	500	148.68	3.36	17000
9.7	700	244.44	2.86	20100
41.8	1980	1053.36	1.88	Max
GF 5045-3	25.2	3.0	300	75.60	3.97	15100
5.9	500	148.68	3.36	19300
9.6	700	241.92	2.89	22500
37.7	1830	950.04	1.93	Max

RSIII2306-2500KV (16.8V)

Propeller	Voltage (V)	Current (A)	Thrust (g)	Power (W)	Efficiency (g/W)	Speed (RPM)
DALPROP Cyclone 5040-3propeller	16.8	4.4	300	73.92	4.06	15300
8.7	500	146.16	3.42	19300
13.6	700	228.48	3.06	22800
35.1	1410	589.68	2.39	Max
DALPROP Cyclone 5050-3propeller	16.8	4.5	300	75.60	3.97	12900
9.2	500	154.56	3.23	16500
15.2	700	255.36	2.74	19400
47.9	1590	804.72	1.98	Max
DALPROP Cyclone F5046-3propeller	16.8	4.5	300	75.60	3.97	13600
8.9	500	149.52	3.34	17500
14.3	700	240.24	2.91	20300
43.1	1580	724.08	2.18	Max
HQ 54.33	16.8	4.3	300	72.24	4.15	14500
8.5	500	142.80	3.50	18400
13.4	700	225.12	3.11	21800
36.5	1480	613.20	2.41	Max
HQ 54.83	16.8	4.4	300	73.92	4.06	13300
8.7	500	146.16	3.42	17000
13.9	700	233.52	3.00	20200
41.9	1580	703.92	2.24	Max
GF 5045-3	16.8	4.3	300	72.24	4.15	15300
8.7	500	146.16	3.42	19300
13.7	700	230.16	3.04	22700
36.8	1470	618.24	2.38	Max

Applications

5-inch FPV racing quad builds
3-6S setups (1800KV / 2100KV) and 3-4S setups (2500KV)

For product selection help (KV choice, cell count, and prop matching), contact [email protected] or visit https://rcdrone.top/.

Details

Built for 5-inch FPV builds, the RSIII 2306 motor balances speed, control, and race-ready durability.

Choose 1800KV, 2100KV, or 2500KV to match your battery setup and prop choice.

The open top design highlights the stator and winding layout for efficient cooling during hard throttle use.

A lightweight 2306 footprint keeps builds responsive without giving up torque for 5-inch props.

Dimensions, mounting pattern, and lead length are listed for quick fit checks before a new build.

Payload test data helps compare prop options and tune for efficiency versus peak thrust.

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EMAX RSIII 2306 FPV Racing Motor – 1800KV/2100KV/2500KV, 27.3x32mm, 4mm Shaft, M5