best rc crawler motor esc combo

Best RC Crawler Motor ESC Combo: Maximum Compatibility

Riding your RC Crawler throughout rougher terrain is always challenging. If you’ve gotten yourself into RC rock crawler cars, the next thing you must be looking for is the Best RC Crawler Motor that comes with an ESC combo. And I’ve listed just that in this article.

Our Top 3 Picks

Best ESC Motor Combo for RC Crawlers



Motor Type

kV Ratings


Castle Creations Crawler Edition ESC


1900 kV

Dynamite Brushed Crawler Motor


6000 kV

Spektrum Firma 60A Brushless Smart ESC


2100 kV

More About Our Top Picks

Now that you know a little bit more about the best ESC motor combo for RC crawlers, its time to get into the nitty-gritty details!

Castle Creations Mamba Micro X ESC

One of the most versatile crawler motor and esc combo with an added auto battery cut-off feature.

Castle Creations Mamba Micro X is the first product on my tier list. I kept it in the first place due to its amazing overall performance. Let’s see what this motor has up its sleeve.

This RC motor has a brushless design with a maximum power of 12.6V which is the highest on this list.

However note that the kV rating of this ESC and motor combo is 1900 kV which is the lowest on this list. This makes this crawler more prone to overheating during high speed races.

It runs by 2s lipo and the highest that I could use was a 3s lipo battery. In that case, it delivered a maximum of 12.6V.

The motor is designed to be waterproof. That means it can be used nearly in any environment. In addition, the power On/Off switch is also waterproof. 

Moving on to the sensor, the sensor board comes with a conformal silicone coating which protects the sensors from getting moisture. Although the Mamba X is waterproof, it is still not recommended to operate while fully submerged in water. 

The main key fact that lifts this RC Crawler motor up the list is its massive 100,000 rpm. That means it delivers huge rotary power which is very ideal in low-speed rock crawling/trail running. 

The maximum recommended weight is 8lbs for a low-speed driving style. And 4lbs for extensive hill climbing or rock crawling.

Now let’s check out its ESC and its features. The electronic speed controller used in this product is the best in its class. It has adjustable 5.5V & 7.5V. The default voltage is 5.5V. Clearly, it will deliver the smoothest power delivery of your needs.

Apart from this, the ESC is reversible. Also, this feature can be disabled during racing. Besides, it has a proportional braking system. That adds a brake curve and drag brake feature. Unquestionably making it the best product for your RC Crawler.

The only thing I didn’t particularly enjoy was the fact that it didn’t make the crawler run the fastest. It could be because of the heavy weight of the motor ESC combo or because of its low kV rating.


  • Fully programmable using the Castle Link USB Adapter
  • Has an auto battery cut-off feature
  • Has a better proportional braking system
  • The ESC offers a reverse option
  • Has the best waterproofing feature


  • Not good for high speed running

Dynamite Brushed Crawler Motor

The ESC and motor combo that has an electronic brake system with 3 different drive modes.

The second product in my tier list is the Dynamite Brushed Crawler Motor. Unlike the previous product, this is a brushed DC motor. Both the brushed and brushless motors have their pros & cons. So without further ado let’s see what this motor has to offer.

I have to start the review of this combo by talking about the price. This is quite an affordable ESC and motor. Because of its price point this is a perfect crawler motor and ESC for beginners.

The brushed motor is always cheaper than the new brushless design. But it doesn’t mean it lacks in terms of performance. Brushed motors are excellent for rebuilding and upgrading.

On the other hand, the input voltage of this motor is 2-3s LiPo. In addition, it can also be powered by 6-9 NiMh batteries.

In conclusion, it has a voltage range of 7.2 – 11.1V. This is an okay voltage range to have. Not the best but not the worst as well. Because of this it faces trouble to climb steeper surfaces.

However, the place that this combo really shines is in the kV ratings. This ESC and motor duo boasts a kV rating of 6000 kV which is the highest on this list. Because of its impressive kV rating, it can gain high speed pretty easily and efficiently.

Moreover, the ESC gave in this motor system comes with waterproof technology. That is always a plus.

I’ve noticed that it also has a BEC with a continuous current of 6V/3A. So, the electrical power delivery system is pretty reliable. 

Another thing that I liked about this combo is that it comes with an electronic brake system that can control drag brakes with 3 specific radio channels. This is a pretty neat feature to have.

Along with these, it is also reversible and has adjustable timing. All these features make this RC motor ESC combo a solid choice for your Crawler car.


  • It has adjustable timing
  • Comes with an electronic brake system
  • Ball bearings are rubber sealed
  • Offers forward, reverse, and crawler drive mode


  • The maximum power is not that high enough. 

Spektrum Firma 60A Brushless Smart ESC

The most advanced ESC and motor combo with a built-in heat sink for thermal protection.

Presenting the third and the final product on my list which is the Spektrum Firma 60A Brushless Smart ESC combo.

The Spektrum Firma Brushless smart ESC is packed with tons of features. 

This brushless motor is powered by 2s-3s LiPo batteries. Also, the maximum input voltage is 7.4 – 11.1V. Which is just like the previous one, pretty average.

However, unlike the previous product, it has a higher minimum voltage. The kV rating of this duo is 2100 kV which is pretty good. In contrast, it will give more acceleration on a low power supply.

This ESC and Motor is also more technologically advanced than the previous two. Let’s take a peek at the spec sheet-

Electronic Speed Controller is powered by a powerful and fast 32-bit M4 processor. Along with Over-current protection and automated low voltage cut-off. 

My favourite feature has to be the failsafe protection. It has an aluminum heat sink for thermal protection. This leads to remarkable heat control. As a result, it has fewer chances of catching fire.

Moreover, the motor is water-resistant along with the ESC sensor which has a locking plug and gasket. Also includes an optional cooling fan.


  • Has a pro-level Sensored Motor with ESC
  • Features a built-in heat sink for thermal protection
  • Has programmable low voltage cutoff


  • The crawler tends to shake after extended use
  • Makes a lot of noise


Buying Guide

Alright, we have seen three products that are the superior RC Crawler motor ESC combo for RC Cars available out there on the market. But, how will you know which one is the most suitable product for your crawler car?

Okay, the way is pretty simple. Let’s go through the basics of what you need to lookout for while buying an ESC motor combo for your crawler.

Brushed or Brushless?

When it comes to buying a DC motor for RC cars, the most commonly asked question is whether someone should choose a brushed or brushless motor.

The brushed or brushless motors are both the opposite. Each of them has its own pros and cons. 

A brushed motor is good because it has a low overall construction cost. It can often be rebuilt. Also, it is ideal to operate in extreme environments.

On the other hand, the brushless motors have less overall maintenance due to a lack of brushes. Due to its reduced size, it offers far superior heat management characteristics. Moreover, its reaches top speed fairly quickly.

Brushless motors are way more common these days because they have that great ability to alter the torque to speed ratio. They do it exclusively better than the brushed motors. Although the brushed motors offer better reliability and longevity.

So, you must decide what kind of benefits you’re looking for and invest on the the one that aligns with your needs.

Are the ESC and Motor Waterproof?

Before choosing a motor and electronic speed controller always check if the motor and the sensor are waterproof or not. Waterproof housings in the sensor and wires will let you drive your RC in any environment. 

Whether it’s raining or the track is flooded, it won’t matter much. That’s why it’s always best to purchase an ESC and motor combo that’s waterproof so that you have one less thing to worry about.

Sensored VS Sensor-less Brushless

First and foremost, you must ensure that the ESC motor combination is compatible. Some use brushless motors, while others use sensor-less motors.

The major distinction between sensored and sensor-less brushless motors is that the former has a sensor while the latter does not. On sensored motors, the “brains” of the speed control are connected to the motor through an extra multi-wire loom. In contrast, there is no extra wire in the sensor-less motor.

ESC motors made specifically for sensored brushless motors will no longer function on sensor-less motors. The opposite is also true. So, before you totally commit to one, you must first verify that department.

The key advantage of employing a sensored brushless motor is that it can accelerate quickly and smoothly from 0 RPM.

Check out this video for additional information on sensored and sensor-less brushless motors-

Damage Protection

Another thing to consider is how powerful the ESC truly is. You know, when you go for a drive with your RC car, you don’t necessarily spend a lot of time ensuring its safety.

You prefer to let go and make the model automobile run fast. Particularly with RCs like the top mini crawlers and crawlers. After all, that’s what they’re designed for, right?

However, if the ESC is not expressly designed to survive a collision, you may have an issue on your hands. The ESC motor will not survive a crash and may go crazy, causing additional damage to your RC crawler.

Current Ratings

Last but not least, make sure the ESC is not drawing too much current. Every ESC, you see, has a current rating. Amps are used to measure this. The current rating for each ESC now varies.

However, there is a limit. Furthermore, when charging these ESC, you must ensure that the current rating does not exceed the maximum limit. Otherwise, there is a risk of an explosion.


Can I use any ESC with any motor?

No, not all brushless motors are compatible with all the brushless ESC’s. Ideally, you should have an ECS with a rating that is at least 20% more than the motor’s wattage.

What’s the shaft size of the Castle Creations Mamba Micro X ESC?

The shaft size of the Castle Creations Mamba Micro X ESC is 2.5mm.

Can the Spektrum Firma 60A Brushless Smart ESC take 3S Lipo?

Yes, the Spektrum Firma 60A Brushless Smart ESC can take from 2S to 3S Lipo.

Final Words

Well, that’s everything summed up for the Best RC Crawler Motor ESC combo. Before buying your motor goes through the facts discussed in the buying guide.

We think we have discussed every topic that you’ll need to know before buying the product. Hope it was informative enough to make you choose the best product for your need.

Good Luck!

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