• EMAX RSIII 2306 FPV Racing Motor close-up, RSIII logo and threaded shaft
  • Side view of RSIII motor showing EMAX branding, silver bell and black can
  • Angled side profile of RSIII brushless motor with RSIII text and wiring lead
  • RSIII motor rear/side view with printed specification markings on the can
  • Top-down macro of motor bell revealing copper windings and spoke-style cutouts
  • Macro close-up of motor shaft and bell, showing vented cutouts and copper coils
  • Package contents: EMAX RSIII motor, retail box, mounting screws, nut and washer
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EMAX RSIII 2306 FPV Racing Motor - 1800KV/2100KV/2500KV, 27.3x32mm, 4mm Shaft, M5

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

Emax

$48.09 USD
$48.09 USD
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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 5*4.3*3 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 5*4.8*3 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 5*4.8*3 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 5*4.3*3 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 5*4.8*3 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 support@rcdrone.top or visit https://rcdrone.top/.

Details

EMAX RSIII 2306 FPV racing motor with RSIII bell, silver top plate, and M5 threaded shaft

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

Side view of RSIII 2306 motor showing RSIII graphics, exposed copper windings, and 20AWG motor leads

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

Top-down view of EMAX RSIII 2306 motor highlighting 12N14P stator layout and central shaft hub

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

Angled views of the 2306 motor emphasizing compact height, lightweight build, and smooth bell machining

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

RSIII-2306 technical drawing and specifications with dimensions, 16×16mm M3 mounting pattern, and wiring length

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

EMAX RSIII 2306 1800KV payload test table with thrust, current, power, efficiency, and RPM results

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

Emax RSIII 2306 FPV Racing motor w/ 1800KV 2100KV 2500KVEMAX RSIII 2306 2500KV payload test table with thrust, current, power, efficiency, and RPM results

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