---
product_id: 43842585
title: "GoolRC Upgrade Waterproof 3650 3900KV Brushless Motor with 60A ESC Combo Set for 1/10 RC Car Truck"
brand: "goolrc"
price: "₨44078"
currency: LKR
in_stock: true
reviews_count: 9
category: "Gool Rc"
url: https://www.desertcart.lk/products/43842585-goolrc-upgrade-waterproof-3650-3900kv-brushless-motor-with-60a-esc
store_origin: LK
region: Sri Lanka
---

# 3900KV high RPM power Waterproof & dustproof design Multi-layer electronic protections GoolRC Upgrade Waterproof 3650 3900KV Brushless Motor with 60A ESC Combo Set for 1/10 RC Car Truck

**Brand:** goolrc
**Price:** ₨44078
**Availability:** ✅ In Stock

## Summary

> ⚡ Upgrade your RC game with unstoppable speed and all-weather toughness!

## Quick Answers

- **What is this?** GoolRC Upgrade Waterproof 3650 3900KV Brushless Motor with 60A ESC Combo Set for 1/10 RC Car Truck by goolrc
- **How much does it cost?** ₨44078 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/43842585-goolrc-upgrade-waterproof-3650-3900kv-brushless-motor-with-60a-esc)

## Best For

- goolrc enthusiasts

## Why This Product

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

## Key Features

- • **Precision Balanced Rotor:** Experience ultra-smooth performance and maximum reliability on every run.
- • **Advanced Safety Protections:** Stay worry-free with low voltage cut-off, overheat, and throttle loss safeguards.
- • **Flexible Soldering & Easy Tuning:** Direct-solder tabs and programmable ESC let you customize your ride like a pro.
- • **All-Weather Waterproof Durability:** Conquer mud, rain, and dust with confidence—race anytime, anywhere.
- • **Race-Ready 3900KV Brushless Power:** Unleash blistering 50,000 RPM speed for your 1/10 RC car domination.

## Overview

The GoolRC Upgrade Waterproof 3650 3900KV Brushless Motor with 60A ESC Combo is engineered for 1/10 scale RC cars and trucks, delivering up to 900W of power and 50,000 RPM. Featuring a precision balanced rotor, high-strength magnets, and dual ball bearings, it ensures smooth, reliable high-torque performance. Its waterproof and dustproof design combined with multiple electronic protections (low voltage cut-off, overheat, throttle loss) make it perfect for all-weather racing. The ESC supports 2-3S LiPo batteries and offers programmable settings for fine-tuning, making this combo a versatile and affordable upgrade for serious RC enthusiasts.

## Description

The original upgrade waterproof 3650 3900KV brushless motor with 60A ESC combo is designed to provide both quality and performance at an affordable price. Waterproof function motor and ESC let your car challenge the muddy road. Providing much convenience for your 1/10 RC car truck. PS?Click the link to watch the product video: https://www.youtube.com/embed/PZ3c92A6isM Features: 4 pole 12 slot high-torque motor design. 3.175mm shaft diameter. High purity copper windings maximizes efficiency. Precision engineered for maximum energy conversion. Precision balanced rotor,smoothness for best reliability and maximum RPM. Mutiple protection features: Low voltage cut-off protection, over-heat protection, throttle signal loss protection. Bulit-in 5.5V/3A BEC. Suit for 1/10 scale RC car. Motor Specifications: Brand name: GoolRC Watts: 900W Max voltage: <13V Max Amps: 69A KV(RPM/Volt): 3900KV Max RPM: 50000 Diameter: 36mm Length: 50mm Shaft length: 15mm Shaft diameter: 3.175mm Plug type: 4mm golden banana plug ESC Specifications: Brand name: GoolRC Item name: waterproof ESC Continue current: 60A Burst current: 320A Battery: 2-3S Li-Po / 4-9S Ni-Mh Ni-Cd BEC output: 5.5V / 3A Power supply plugs: T plug male Motor plugs: 4mm banana plug female Dimension: 50 * 35 * 34mm / 2.0 * 1.4 * 1.3in (without cables) Package Information: Package size: 10.5 * 8 * 6cm / 4.1 * 3.2 * 2.4in Package weight: 293g / 10.3oz Gift box package Package List: 1 * GoolRC 3650 3900KV Motor 1 * GoolRC Waterproof 60A Brushless ESC

Review: Wooh! Now that's fast! Requires patience. - You must spend some time configuring the right way. Here's some advice. 1) I used a FS-GT3C controller/receiver to connect to the ESC. This made it much easier to fine tune. 2) Mine went WAY faster in reverse! Despite buying the motor/esc combo and matching the red, blue, yellow wires. My car was twice as fast in reverse. To fix, I swapped the blue and yellow motor wires and instantly my RC car is insanely fast going forward. 3) The ESC can be programmed via an extra programming card. That will help you set the min/max strength of forward, reverse, braking strength and more, including some settings you may not be thinking of. 4) If you are coming from a brushed motor to this brushless motor/esc, be sure to give it a gentle break-in. I used more than half a battery before I really started pushing it to max speed. 5) I built a Tamiya Hot Shot 2 and a Tamiya Dark Impact and managed to cram 2 of these motors in. While I was successful at fitting the motor in both cars, the Dark Impact required that I grind down the tip of the motors drive rod. They give you a generous size on the motor, but the Dark Impact has space limitations. I own 5, 1/10th scale RC cars/trucks. 2 are brushed, 3 are brushless. Bang for the buck, excellent price, faster top speed than expected. Cons: The esc is just a little big. Not by much. But, let's just say I really worked to fit it into the Hot Shot 2. Was an easy fit on the Dark Impact. Fitting the motor on the Dark Impact took some thought. It'll only fit 1 way! 3s Lipo promoted on listing, paperwork in box says 2s only. I only run 2s, but I've noticed others say 3s works. While the numbers say it is possible. I believe the manufacturer is trying to keep us within safe limits. Best to stick with 2s and if attempting 3s, monitor very closely for heat build up. Pros: No motor heat buildup on the 2 I am currently running. Motors seems to stay way cooler than brushed motors. Love the torque and top speed (keeping stock gearing). 4wd cars seem to love it. A really nice upgrade for anyone coming from brushed to brushless. There's more room for tweaking. I like how many adjustments I can make. I also really liked the price. I'm actively racing my two cars, and if I run into troubles, I will be sure to update my review.
Review: Really bad cogging. Huge hit or miss. - Got this as a replacement for my stock esc and motor. Saw great things about it on YouTube. But this motor cogs so bad it hardly gets the car moving. Even after I programmed it the system was still hardly moving the car. Also the motor gets really hot really fast. Way hotter than the stock motor. Only running a 2S 20c lipo in it too. Don’t buy this. Spend the money and get something good like castle or spectrum cuz this is just disgraceful. Also went to their website for customer service. The only thing that came up was just the words “customer service” and when I clicked “contact us” it said “coming soon”. Don’t buy this.

## Features

- Precision balanced rotor, smoothness for best reliability and maximum RPM NOTE: The product recommends using 2S (7.4V) batteries for the unit. Using a mismatched battery may result in the risk of burning out the electronics.
- High strength magnets for unmatched brush-motor performance Excellent torque and long-run times
- Direct-solder wiring tabs for flexible soldering options
- Dual-ball bearings design.Water-proof and dust-proof for all weather races
- Multiple protections: Low voltage cut-off protection for battery / Over-heat protection / Throttle signal loss protection

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0719B6F9N |
| Best Sellers Rank | #388,225 in Toys & Games ( See Top 100 in Toys & Games ) #931 in RC Electric Motors |
| Brand | GoolRC |
| Customer Reviews | 3.3 3.3 out of 5 stars (254) |
| Horsepower | 900 Watts |
| Is Discontinued By Manufacturer | No |
| Item Weight | 9.6 ounces |
| Item model number | JSZ7341174698031AL |
| Manufacturer | GoolRC |
| Manufacturer recommended age | 16 years and up |
| Material | Copper |
| Product Dimensions | 2.56"W x 1.42"H |
| Shaft Diameter | 3.18 Millimeters |
| Speed | 50000 RPM |
| UPC | 602430460593 |
| Voltage | 13 Volts, 5.5 Volts |

## Product Details

- **Brand:** GoolRC
- **Horsepower:** 900 Watts
- **Product Dimensions:** 2.56"W x 1.42"H
- **Speed:** 50000 RPM
- **Voltage:** 13 Volts, 5.5 Volts

## Images

![GoolRC Upgrade Waterproof 3650 3900KV Brushless Motor with 60A ESC Combo Set for 1/10 RC Car Truck - Image 1](https://m.media-amazon.com/images/I/519YEEdEq-L.jpg)

## Questions & Answers

**Q: Will this work with Bezgar hm162?**
A: If you can modify the truck to adapt the motor mounting, and mount for the ESC, it should work fine.  You have to use both the motor and ESC since the original truck motor is brushed, and the new one is brushless.

**Q: Will this fit a typhon 3s blx v4?**
A: Sure.

**Q: how fast will it make a stampede 2 wd go**
A: 25-30 mph

**Q: Is this worh buying**
A: I've only had this a short time but it is working fine..

## Customer Reviews

### ⭐⭐⭐⭐⭐ Wooh! Now that's fast! Requires patience.
*by A***R on June 12, 2024*

You must spend some time configuring the right way. Here's some advice. 1) I used a FS-GT3C controller/receiver to connect to the ESC. This made it much easier to fine tune. 2) Mine went WAY faster in reverse! Despite buying the motor/esc combo and matching the red, blue, yellow wires. My car was twice as fast in reverse. To fix, I swapped the blue and yellow motor wires and instantly my RC car is insanely fast going forward. 3) The ESC can be programmed via an extra programming card. That will help you set the min/max strength of forward, reverse, braking strength and more, including some settings you may not be thinking of. 4) If you are coming from a brushed motor to this brushless motor/esc, be sure to give it a gentle break-in. I used more than half a battery before I really started pushing it to max speed. 5) I built a Tamiya Hot Shot 2 and a Tamiya Dark Impact and managed to cram 2 of these motors in. While I was successful at fitting the motor in both cars, the Dark Impact required that I grind down the tip of the motors drive rod. They give you a generous size on the motor, but the Dark Impact has space limitations. I own 5, 1/10th scale RC cars/trucks. 2 are brushed, 3 are brushless. Bang for the buck, excellent price, faster top speed than expected. Cons: The esc is just a little big. Not by much. But, let's just say I really worked to fit it into the Hot Shot 2. Was an easy fit on the Dark Impact. Fitting the motor on the Dark Impact took some thought. It'll only fit 1 way! 3s Lipo promoted on listing, paperwork in box says 2s only. I only run 2s, but I've noticed others say 3s works. While the numbers say it is possible. I believe the manufacturer is trying to keep us within safe limits. Best to stick with 2s and if attempting 3s, monitor very closely for heat build up. Pros: No motor heat buildup on the 2 I am currently running. Motors seems to stay way cooler than brushed motors. Love the torque and top speed (keeping stock gearing). 4wd cars seem to love it. A really nice upgrade for anyone coming from brushed to brushless. There's more room for tweaking. I like how many adjustments I can make. I also really liked the price. I'm actively racing my two cars, and if I run into troubles, I will be sure to update my review.

### ⭐ Really bad cogging. Huge hit or miss.
*by E***N on August 10, 2021*

Got this as a replacement for my stock esc and motor. Saw great things about it on YouTube. But this motor cogs so bad it hardly gets the car moving. Even after I programmed it the system was still hardly moving the car. Also the motor gets really hot really fast. Way hotter than the stock motor. Only running a 2S 20c lipo in it too. Don’t buy this. Spend the money and get something good like castle or spectrum cuz this is just disgraceful. Also went to their website for customer service. The only thing that came up was just the words “customer service” and when I clicked “contact us” it said “coming soon”. Don’t buy this.

### ⭐⭐⭐⭐⭐ cheap price
*by M***S on August 6, 2024*

works, but setup is hard ...

## Frequently Bought Together

- GoolRC Upgrade Waterproof 3650 3900KV Brushless Motor with 60A ESC Combo Set for 1/10 RC Car Truck
- Zeee 7.4V Lipo Battery 2S 50C 5200mAh Lipos Hard Case with Dean-Style T Connector for RC Car Trucks 1/8 1/10 RC Vehicles(2 Packs)
- SUPULSE LiPo Battery Charger 2S-3S RC Balance Charger AC 7.4-11.1V 10W Upgrade Version Compact Lipo Charger RC Car Charger for XHR Plug Battery(B3V2)

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-03-01*