4000KV Brushless RC Boat Motor

5 out of 5 based on 1 reviews | Write a review

$132.86

Waterproof brushless RC boat motor comes with 4000KV rotation speed, Max. speed up to 60000KV. Small brushless motor for RC boat has Max. current 120A and Max. voltage 15V. High torque brushless motor has a highly balanced rotor, high smoothness, accuracy, and high speed.

SKU: ATO-RB-4000

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Delivery date: 6-12 days

Overview
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Cheap price brushless waterproof motor with a speed of 4000KV, maximum current 120A, length*diameter 68mm*29mm, brushless motor has significantly higher efficiency and performance and is ideal for RC boats.

Specifications

Model: ATO-RB-2968
Rotational Speed: 4000KV
Maximum Current: 120A
Maximum Voltage: 15V
Maximum Power: 1800W
Length: 68mm
Diameter: 29mm
Winding Method: DELTA
Number of Turns: 2.5T
No-load Current: 2.9A
Max Seed: 60000KV
Shaft: 4mm
Number of Rotor Stages: 4
Weight: 185g

Features

4-stage 12-slot high-torque motor design
CNC machined billet, 6061-T6 aluminum heat sink
High-purity copper coil for maximum performance
High-speed ABEC5 oversized bearings
Highly balanced rotor, high smoothness, accuracy and high speed
Ultra-thin (0.2mm) stator blades
Removable/replaceable rotor
Precision design for maximum energy conversion

Dimension (Unit: mm)

4000KV brushless rc boat motor dimension

Detail

4000KV brushless rc boat motor details

Tips: How to choose the size of an RC boat motor?

28-29mm can size- will power most hulls up to 600mm.
36mm can size- up to around 800mm.
40mm can size- up to 1200mm as long as it's a light brushless dedicated or abs hull.
Anything over that will require a56– 58mm motor.

VFD Two-Wire Control Wiring with Push Button for Forward Motor

In this video we've guided you through how to do VFD control wiring with a self-lock push button switch to run the motor in forward direction. We've covered everything from wiring to programming and even a test run. So just watch it through and hope you'll find it informative and helpful.

Existing reviews of 4000KV Brushless RC Boat Motor

Powerful and reliable motor

I installed this 4000KV brushless motor on my RC speed boat, and it completely transformed the performance! The acceleration is smooth, and it easily reaches high speeds without overheating. The waterproof design really holds up — no issues even after several runs in the lake. The torque and balance are impressive; the boat runs steady and fast with minimal vibration. Definitely a powerful and reliable motor for anyone looking to upgrade their RC boat setup. Highly recommended!

From: Leo | Date: 10/11/2025

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