---
product_id: 650765182
title: "120A Waterproof Brushless ESC Electronic Speed Controller with 5.5V/5A BEC and XT90 4.0mm Banana Head Connector for Model Ship RC Boat"
brand: "flycolor"
price: "$532.47"
currency: USD
in_stock: true
url: https://www.desertcart.ec/products/650765182-120a-waterproof-brushless-esc-electronic-speed-controller-with-5-5v
store_origin: EC
region: Ecuador
---

# 120A high current capacity Waterproof design for all-weather use 5.5V/5A BEC for stable power supply 120A Waterproof Brushless ESC Electronic Speed Controller with 5.5V/5A BEC and XT90 4.0mm Banana Head Connector for Model Ship RC Boat

**Brand:** flycolor
**Price:** $532.47
**Availability:** ✅ In Stock

## Summary

> 🚤 Command the waves with precision and power!

## Quick Answers

- **What is this?** 120A Waterproof Brushless ESC Electronic Speed Controller with 5.5V/5A BEC and XT90 4.0mm Banana Head Connector for Model Ship RC Boat by flycolor
- **How much does it cost?** $532.47 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/650765182-120a-waterproof-brushless-esc-electronic-speed-controller-with-5-5v)

## Best For

- flycolor enthusiasts

## Why This Product

- Trusted flycolor brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Waterproof Durability:** Race rain or shine with a rugged ESC designed to withstand wet conditions without compromise.
- • **Seamless Power Delivery:** High-performance MCU and 5.5V/5A BEC ensure consistent servo power with minimal dissipation.
- • **Intelligent Customization:** Set start modes and low-voltage thresholds tailored to your racing style.
- • **Robust Safety Protections:** Built-in safeguards against overheating, voltage anomalies, and signal loss keep your boat race-ready.
- • **Precision Throttle Control:** Experience ultra-smooth, linear speed adjustments for flawless maneuvering.

## Overview

The FLYCOLOR 120A Waterproof Brushless ESC is a high-performance electronic speed controller designed for RC model ships and racing boats. Featuring a powerful MCU, customizable settings, and multiple safety protections, it delivers smooth throttle response and reliable power through a 5.5V/5A BEC. Its waterproof design and robust connectors ensure durability and consistent performance in all conditions.

## Description

120A Waterproof Brushless ESC Electronic Speed Controller with 5.5V/5A BEC and XT90 4.0mm Banana Head Connector for Model Ship RC Boat

## Features

- FlyMonster-120A Use powerful & high performance MCU. Users can set functions as their demand, fully embody Intelligent characteristics. Unique circuit design, strong anti-interference.
- Start mode can be set. throttle response fast, and it has a very smooth speed control linearity. Compatible with scale boat & racing boat .Low-voltage protection threshold value can be set.Built-in switch BEC, large power load with servo, lower power dissipation.
- Waterproof design,Multiple protection functions: input voltage abnormal protection/ low-voltage cutoff protection, over-thermal protection and throttle signal loss protection, make the ESC more reliable.
- High power safety performance: wherever the throttle lever is, the motor will not start immediately.Cycle menu setting, simple operation. Support setting with program box and transmitter.
- Over thermal protection: when ESC temperature is over 100 °C， output power will automatically reduce. When it's lower than 80°C output power will return to normal.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Model Number | 120A |
| Batteries Required | No |
| Batteries Included | No |
| tech_spec_battery_description_toys | Power source type: Battery, Voltage Range: 2-6S Lipo |
| Material Type(s) | Plastic |
| Colour | Black |
| Package Dimensions | 19.89 x 16.51 x 3.99 cm; 249 g |
| Item model number | 120A |
| Manufacturer recommended age | 14 years and up |
| Manufacturer | FLYCOLOR |
| Country of Origin | USA |
| Item Weight | 249 g |

## Images

![120A Waterproof Brushless ESC Electronic Speed Controller with 5.5V/5A BEC and XT90 4.0mm Banana Head Connector for Model Ship RC Boat - Image 1](https://m.media-amazon.com/images/I/71zYWzU1f+L.jpg)
![120A Waterproof Brushless ESC Electronic Speed Controller with 5.5V/5A BEC and XT90 4.0mm Banana Head Connector for Model Ship RC Boat - Image 2](https://m.media-amazon.com/images/I/61S4AyszhyL.jpg)
![120A Waterproof Brushless ESC Electronic Speed Controller with 5.5V/5A BEC and XT90 4.0mm Banana Head Connector for Model Ship RC Boat - Image 3](https://m.media-amazon.com/images/I/61oZ-+OlSbL.jpg)
![120A Waterproof Brushless ESC Electronic Speed Controller with 5.5V/5A BEC and XT90 4.0mm Banana Head Connector for Model Ship RC Boat - Image 4](https://m.media-amazon.com/images/I/61KloyYwyRL.jpg)
![120A Waterproof Brushless ESC Electronic Speed Controller with 5.5V/5A BEC and XT90 4.0mm Banana Head Connector for Model Ship RC Boat - Image 5](https://m.media-amazon.com/images/I/71kWGzJCk0L.jpg)

## Questions & Answers

**Q: ebike Compatible**
A: No, it needs water to keep it cool.

**Q: Has anyone used this for rc edf jets? i'm looking at something that requires this level of power and i'm only finding car or boat escs with the amps**
A: Hello! Happy to answer your question, the 120A ESC you see is for RC ships.
If it is used on the plane, please use this link ESC:https://www.amazon.com/dp/B09PH53WCN?ref=myi_title_dp

**Q: This esc makes me recalibrate each time i unplug power to the device. any suggestions ? it will not memorize.**
A: Hello! Thank you for telling us this question. Usually he will remember. He only needs to calibrate the throttle when he uses it for the first time. Can you tell me what remote control you use?

**Q: What size motor connection does this have? I need 4mn**
A: It's 5.5 MM. I  had to get adapters.

## Frequently Bought Together

- Flycolor 120A Waterproof Brushless ESC Electronic Speed Controller with 5.5V/5A BEC and XT90 4.0mm Banana Head Connector for Model Ship RC Boat
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**Shop now:** [https://www.desertcart.ec/products/650765182-120a-waterproof-brushless-esc-electronic-speed-controller-with-5-5v](https://www.desertcart.ec/products/650765182-120a-waterproof-brushless-esc-electronic-speed-controller-with-5-5v)

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-02-22*