---
product_id: 69819593
title: "3650 5900KV Sensorless Brushless Motor 120A Brushless ESC & Program Card Waterproof Motor ESC Combo 3.175mm Shaft for 1/10 RC Car Truck"
brand: "jrelecs"
price: "12 Lei"
currency: RON
in_stock: false
reviews_count: 8
url: https://www.desertcart.ro/products/69819593-3650-5900kv-sensorless-brushless-motor-120a-brushless-esc-and-program
store_origin: RO
region: Romania
---

# 5900KV Speed 120A Power Waterproof Design 3650 5900KV Sensorless Brushless Motor 120A Brushless ESC & Program Card Waterproof Motor ESC Combo 3.175mm Shaft for 1/10 RC Car Truck

**Brand:** jrelecs
**Price:** 12 Lei
**Availability:** ❌ Out of Stock

## Summary

> 🏎️ Rev Up Your Ride with Unstoppable Power!

## Quick Answers

- **What is this?** 3650 5900KV Sensorless Brushless Motor 120A Brushless ESC & Program Card Waterproof Motor ESC Combo 3.175mm Shaft for 1/10 RC Car Truck by jrelecs
- **How much does it cost?** 12 Lei with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/69819593-3650-5900kv-sensorless-brushless-motor-120a-brushless-esc-and-program)

## Best For

- jrelecs enthusiasts

## Why This Product

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

## Key Features

- • **Safety First:** Multiple protection features keep your motor safe and sound, so you can focus on the race.
- • **Lightweight Champion:** At just 115 grams, this motor combo is engineered for agility and speed.
- • **Power Meets Precision:** With 900 Watts of horsepower, enjoy a seamless blend of power and control.
- • **Built for the Elements:** Waterproof design ensures your adventures continue, rain or shine.
- • **Unleash Unmatched Speed:** Experience the thrill of 5900KV performance that leaves competitors in the dust.

## Overview

The 3650 5900KV Sensorless Brushless Motor and 120A ESC combo is designed for 1/10 RC cars and trucks, featuring high-speed ball bearings, high-purity copper windings, and multiple safety protections. With a lightweight design and waterproof capabilities, this motor ensures optimal performance and durability in any condition.

## Description

Full description not available

## Features

- Efficient and high-speed ball bearings
- High purity copper windings maximizes efficiency
- Short stator, less wire, lower resistance, more power
- Consistent and high-power output provide longer run time Super smooth and accurate throttle linearity Fast response to throttle input
- Mutiple protection features: Low voltage cut-off protection for lithium or nickel battery, Over-heat protection, Throttle signal loss protection, Motor blocked protection

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Voltage | 6.1 Volts |
| Horsepower | 900 Watts |
| Speed | 50000 RPM |
| Item Weight | 115 Grams |
| Shaft Diameter | 3.18 Millimeters |
| Material Type | Nickel |

## Product Details

- **Brand:** jrelecs
- **Speed:** 50000 RPM
- **Voltage:** 6.1 Volts
- **Horsepower:** 900 Watts
- **Material:** Nickel

## Images

![3650 5900KV Sensorless Brushless Motor 120A Brushless ESC & Program Card Waterproof Motor ESC Combo 3.175mm Shaft for 1/10 RC Car Truck - Image 1](https://m.media-amazon.com/images/I/61gidceaYcL.jpg)
![3650 5900KV Sensorless Brushless Motor 120A Brushless ESC & Program Card Waterproof Motor ESC Combo 3.175mm Shaft for 1/10 RC Car Truck - Image 2](https://m.media-amazon.com/images/I/51uM3752l5L.jpg)
![3650 5900KV Sensorless Brushless Motor 120A Brushless ESC & Program Card Waterproof Motor ESC Combo 3.175mm Shaft for 1/10 RC Car Truck - Image 3](https://m.media-amazon.com/images/I/51T0ec5LpqL.jpg)
![3650 5900KV Sensorless Brushless Motor 120A Brushless ESC & Program Card Waterproof Motor ESC Combo 3.175mm Shaft for 1/10 RC Car Truck - Image 4](https://m.media-amazon.com/images/I/51SAtwZTRpL.jpg)
![3650 5900KV Sensorless Brushless Motor 120A Brushless ESC & Program Card Waterproof Motor ESC Combo 3.175mm Shaft for 1/10 RC Car Truck - Image 5](https://m.media-amazon.com/images/I/51f0oiA2l0L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fast, sometimes too fast!
*by A***R on January 21, 2022*

First, I ran it in my old vintage HPI RS4 Pro 2. motor barely fits with minor rubbing on the carbon/graphite bottom chassis. The ESC is large, but fits fine on the chassis of the Pro2. But unfortunately, I don't have enough street for gradually stretching out the car for high speed runs and good tires to run the car since it's so light and the motor is so powerful, it'll spin the car if i'm not careful with the throttle. Broke lots of old parts that are hard to get and a couple of cheap plastic rims running this setup. I was running 42t/122t pitch64 on 3s and hit about 55mph before having to get off the throttle. Probably can hit 65+ with my setup. I found the 5900kv is too much for this and downgrade back to 3100kv brushless on my HPI Pro2 for better manageability with the driving..Transplanted this 5900kv motor to my Traxxas Fiesta Rally and it's perfect. The Rally is about 4 times as heavy as my Pro2 above so the power is good anmanageable on it. Upgraded the slipper clutch to Traxxas diff and running 20t/50t pitch 32 on 3s and I hit about 40 mph on my short cu-del sac. I think open road, I should hit at least 50+mph for my setup. Car is very controllable and fun to drive (compared to the stock ~17mph from the factory).! Esc is a tight fit in the Rally and had to just squeeze it in diagonally.6 months later and still running strong. No issue with the ESC or motor (dont have 4s battery to try out). Added a heatsink and fan combo to help the motor expell heat. After a good run, temp with fan hits about ~170F (borderline okay/not okay) and the ESC is about ~115FGreat Buy!

### ⭐⭐⭐⭐⭐ Better than anything for the money, period you won’t find better.
*by R***N on January 10, 2019*

Awesome set up for the price, put it in my slash 2wd. Will blow the doors off the velenion 3s system, for half the price. Motor has so much torque it will wheelie with 1/4 throttle. Full throttle off the start and it will put iself on its roof. Best rc I’ve ever owned and now it has even more power. Traxxas slash 2wd, proline 5” MX wheels and tires, long travel piggyback shocks with medium springs, rpm everything. I think I finally have a “perfect” RC. I will update this review after I’ve ran it more for a durability test. The dang thing is so fast now, it torque rolled at about 30 mph or so and cartwheeled down the asphalt for about 80 feet. Broke the front rpm hubs/carries and broke a rear bearing carrier. Waiting for some shiny RPM metal to come now. EDIT!!! It’s been like 2 months so far and plenty of abuse, been ran in the snow every time, when done disconnect battery and set it in front of a register for 24 hours to throughly dry out, done it multiple times now and she’s still going! I’ve even re geared with 32 pitch gears, 20 tooth pinion and 56t spur, put 1/8 scale MT tires on it (6.5”) and widened the entire slash by 1”, it is now a bullet proofed, 1/8 scale 2wd.....thing

### ⭐⭐⭐⭐ I loved it, but
*by G***A on November 9, 2024*

The speed control and motor is very fast and a lot of fun but the fan on my speed control was either defective or low quality. I probably used it about six times now and the fan is starting to make a weird noise like the bushing is going out. Other than that, this thing‘s awesome and plenty fast. I had no problems with the motor, however you will need a heat sink if you’re going to drive the full throttle the whole time.

## Frequently Bought Together

- Jrelecs 3650 5900KV Sensorless Brushless Motor 120A Brushless ESC & Program Card Waterproof Motor ESC Combo 3.175mm Shaft for 1/10 RC Car Truck
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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-01-23*