Best Roar Approved 17.5 Motor

Best Roar Approved 17.5 Motor: Find the Perfect Motor!

If your 2WD buggy needs an upgrade, a motor is something that comes to your mind. Getting a better motor improves performance almost instantly. 

Roar Racing is quite picky when it comes to approving the internals of RC vehicles. And if they approve a motor, it’s got to be good, right?

Well, we still had to make a top-five list out of all the motors that we checked. Out of many motors from Associate or Hobbywing, we had to choose just five.

You can go through the list and pick the best Roar approved 17.5 motor for your RC vehicle. Whether you want to try out a new motor for your 2WD buggy or you want to change the stock one, I think this will have you covered. 

We tried to include motors of different price ranges too. And there’s a neat little buying guide towards the end too. We also added the answers to the most asked questions about these. 

Comparison Table






Team Associated 27402 Brushless Motor

0.19 lbs.


Trinity REV1102 X Factor 17.5T



Team Associated ASC293 Motor

0.38 lbs.


Hobbywing 30404306 Quicrun Brushless Motor

6.6 oz.


Hobbywing JUSTOCK G2.1 Brushless Motor

8.5 oz.



Team Associated 27402 Brushless Motor

Product Overview

The first on the list is this brushless motor from Team Associated. After careful consideration, we decided to put this one on top. This lightweight motor serves the purpose decently. And we’ll tell you why we like this one. 

Let’s start with what we didn’t like. It’s the pricing. You might say that this offers enough for the pricing to be justified. But there are two ways of looking at it. 

When it comes to brushless motors or batteries, you should stick with what’s supported. And that’s what we did. This one from Team Associated kind of ticked all the boxes, except for the price.

We tried to fool around with it and drop it from waist height a couple of times. The motor always came out unscathed. 

As for installation, it was pretty easy. Some of you might even say that it was as easy as placing a Lego piece. I digress. We didn’t need to fiddle around with anything during the installation. So that’s a positive.

Let’s move on to the performance now. What we saw during our three months of testing was satisfactory. I mean, you probably expect more than “satisfactory” if you’re paying so much money, right? Let’s talk about it.

The motor can ramp up to the higher RPMs comparatively fast. But the cooler thing about this is the temperature control, no pun intended.

It did not heat up so much even during the high RPM testing phase. So this is the best quality that you should be looking for in a brushless motor.

This Roar-approved motor was also able to help our buggy clear the harder ramps. If you’re comparing it with the stock one, I’d say it just about beats the stock motor, but not by a lot.

If you’re on the hunt for the most balanced motor out of all of these, I think this one ticks all the boxes. 


  • Speeds up to higher RPMs fast
  • Doesn’t get too hot
  • Durable outer shell
  • Good for clearing jumps
  • Great for track racing


  • On the expensive side
  • A couple of units may have faults 


Trinity REV1102 X Factor 17.5T

Product Overview

Up next, we have this one from Trinity. This one looks a bit different than the conventional ones. And, it also showed decent promise while we were testing this out on our RC vehicle. Let’s talk about how this one stacks up against the first one we just reviewed.

We complained about the pricing of the first one. So, the complaint should carry over to this one also. It’s even more expensive than the first one. So we’re deducting points here already.

And that’s one of the reasons why this one came second on our list. But let’s get this straight. This one handled pretty much everything that we threw at it. So we actually have few complaints about this one.

In terms of performance, well, this was more than satisfactory. We were able to spend a couple of months with this review unit. And we used it like a power user throughout. 

Upon testing this one out, the motor was able to generate more amps. It was on par with the one on the top of the list. At times, this one even surpassed the other one, even if that’s only by a bit. 

Trinity products are usually on our good side. Whether it’s their motors or batteries, they work decently. 

If you’re curious, well, we tried this out with a two-wheel-drive buggy. And we were actually pleased with the results. Most cheaper motors have the tendency to heat up like crazy.

Well, we didn’t see the same situation in this case. Some of us here think it was well worth the price tag. I never said that this was a bad motor. It’s just on the expensive side.

So, do you think this did well on the ramps? It has to, right? Well, we think it passed with flying colors.

The ramps we tested this out were of moderate difficulty. And our buggy was able to clear them with the stock motor. So we think an expensive version shouldn’t have too much trouble either.

And that’s what happened. The motor was able to push the buggy enough to clear the ramps on the jumps every time we tested. It might also be due to us being super professional RC racers, right?

In summary, yes, this is the most expensive thing you might buy for your buggy. But if you’re seriously competitive and you have the money to spare, I don’t see why you should skip this one. 


  • Doesn’t heat up too much
  • Great for off-road racing
  • Good for a 2WD buggy
  • Powerful motor
  • Decent RPM’s achievable 


  • It might be too expensive
  • One or two units may be faulty

Team Associated ASC293 Motor

Product Overview

In third place, we have another one from Team Associated. This one’s the first in the budget segment that we’re starting now.

Well, this isn’t really a budget segment. But the price is honestly the best thing about this. It might not bring the same value as the other two on top, but we think it’s worth a shot.

In terms of looks, this one looks almost the same as the first one on the list. You might fail to tell them apart if you keep both of them side by side. 

It’s lightweight and offers enough value for your RC vehicle. So let’s move onto the results we came across after testing.

The installation seemed like a breeze. We were able to place the motor back in place of the stock option. A bit of fiddling around might be necessary, but it’s not the end of the world.

We had the privilege to keep this review unit for around three months. and we tested this out during those three months quite extensively. 

The motor showed some promise on the track. We saw that it was able to reach the high RPMs quickly. But I think you’ll see it heating up quite a bit too. I don’t think that the heating issue is extensive. It’s bearable, to say the least. 

When it comes to durability, I think they cut costs here. After a couple of “accidental” drops, the motor wasn’t usable anymore. I mean, we did drop it from relatively high up. You won’t be making those jumps in real-life racing.

But we did expect this to hold up a bit better. Then again, this is one of the most affordable options on the list. 

As long as you don’t plan on dropping motors left and right, this is still a wise choice. 


  • Good for track racing
  • Decent for jumping across ramps
  • Works well with 1/10 scale buggies
  • Quick to reach higher RPMs
  • Affordable option


  • It might heat up a bit
  • Not the best durability 


Hobbywing 30404306 Quicrun Brushless Motor

Product Overview

Coming in at fourth place, we have this Quicrun motor from Hobbywing. We started the page off by mentioning motors from Hobbywing and Team Associated. So it’s normal that you’d see them appear multiple times on the list.

This particular red-colored motor caught us by surprise. It’s not the best motor in the world. It’s far from it. But some of the neat features did manage to surprise us. And that’s where things went right. 

Don’t get me wrong, this had a couple of drawbacks too. And that’s why it didn’t finish higher up in the table. 

The motor is particularly lightweight. So if weight is truly important to you, you might see this as a wise choice. As for installation, we didn’t face too much of a hassle.

We were able to place this one right in place of the other one. That was the best part. There was no need for any fiddling around with the motor for our buggy. So this is a thing we appreciate.

Let’s move on to the performance-

So how did you think this one did in our tests? As for the speed, the motor was able to ramp up pretty quickly. But there was a point at which the heat started to creep up too. 

And we weren’t able to get the motor to cool down. The problem with this is that it runs a bit hot. Don’t get me wrong, this doesn’t get unbearably hot. But if you’re on the hunt for a motor that runs cool even at high RPMs, then this is not it.

Another thing that I’ll add is the jumping capability. We tried the motor out on our buggy and tested out a couple of different ramps. Now, they weren’t the longer ramps where the buggy had to cover a couple of meters. 

But they were decently sized ramps for testing. The motor was able to boost the buggy enough so that the buggy was able to cover the gaps. The performance of clearing ramps was comparable to that of the stock one. So I see no complaints here.

All in all, you can obviously get better motors. But for this price, I think it’s a solid enough option. 


  • Has a massive capacity of 8000 mAh
  • This battery generates a punchy power due to high voltage
  • Comes with two battery packs
  • Offers good high-speed and offroad runs


  • Too much heat can damage the battery

Hobbywing JUSTOCK G2.1 Brushless Motor

Product Overview

And, finally, we have Hobbywing’s JUSTOCK to end the list. Don’t skip this one just because it came last. In fact, this one showed us a bit of promise too. So I think you might like it.

Just like the others, this is another brushless motor approved by Roar Racing. If you’re curious about whether this has a sensor or not, well, let’s talk about it.

This one is priced higher than the previous two that we just reviewed. This was one of the reasons for it to finish later on the list. But hey! At least this made it to the top five, right?

One good thing about this one is the compatibility. They said that this was compatible with 1/10 and 1/12 scale RC models. And since we had a unit of each of the vehicles, we weren’t afraid to test it out. 

We expected their claim to hold true, which it did. And the motor fits precisely on both of our models. So that’s a good sign. If you have two vehicles and you need to compete with one at a time, this could be a viable option.

Our reaction to the price is “meh.” It’s like we didn’t even care at this point. Anything cheaper than the two on the podium places was good. But the performance is where things get interesting.

We didn’t compete in any races with this. But we had a couple of fun racing sessions using our 1/10 scale buggy. We put the buggy up against another one of the same model and raced. You should know that the other one had the stock motor installed.

From our understanding, this motor is quite satisfactory for the spec class. If you were involved in a race that requires you to change the time continuously, it’s a different story.

That’s because if timing changes are allowed, the stock might outperform the motor. 

So, what about the larger jumps? Well, that’s kind of disappointing. The motor wasn’t able to clear the last few inches of the larger ramps. And the stock one was quite good at those. So this is a disadvantage that you have to live with.

If you’re buying this for just the on-road performance, pick this up. It’s decent, and the speed ramps up quickly. We also didn’t notice any crazy heating issues. The temperature stayed in the normal range. So you won’t have to worry about that either. 


  • Good compatibility
  • Decent with 1/10 scale buggies
  • Suitable for spec class racing
  • Decent temperature control
  • Speeds up quickly 


  • Not the best durability
  • Not the best for longer jumps

Buying Guide

Let’s talk about a few things you have to keep in mind when you’re making a purchase. Now that you’ve looked at the different motors on the list don’t jump in to buy one.

Here’re some of the factors you should consider.

RPM & Speed Constant

This is practically the first thing you should consider. The speed of the motor is almost directly related to the speed that your RC vehicle will travel.

Let me explain this to you like you’re five. If the motor can hit a higher RPM, this means it can go at a faster speed. The faster it spins, the faster the gears spin. Eventually, your buggy or any other RC vehicle will be able to go faster.

So even if the RPM doesn’t literally translate to faster speed, it has a good connection. That’s why it’s important to check the speed constant and ROM here. 

The Timing Aspect

Another thing you need to keep in might be the timing aspect of the motor. Check the timing of the motor with an analyzer. You can pick that up for a couple of bucks or test it out at the local shop.

If the timing is too high, your motor might be inefficient. These motors also get hot quite fast. But if you’re not using enough timing, the motor ends up not meeting its potential. So you have to keep this in mind if you’re purchasing a motor for the first time. 


Question: Will the motor make my RC buggy faster?

Answer: A decent motor from a renowned brand may very well make your RC vehicle better. If the motor can reach the higher RPMs without heating up too much, then it’s a solid upgrade nonetheless. 

Question: Why is my motor not performing to its potential?

Answer: It could be because of the timing. Sometimes, the timing is set very low to keep the motor cool. But this also might limit the highest potential of the motor. So get that checked with an analyzer.

Question: What is the safe amp rating for my motor?

Answer: There isn’t any written rule. But if you tune it so that the motor can draw around 5-6amps, it should be enough. That’s the sweet spot in most cases by keeping it at a safe temperature range.  


That’s it from us. We hope we were able to include all the details in this one. Brushless motors come in different shapes, as you see. But Roar Racing’s approval actually means a lot in this case. 

We tried to test each of them thoroughly so that you can have a better idea. This guide will hopefully help you make a better purchase decision. You can probably choose the best Roar Approved 17.5 motor from this list of ours.

All the motors featured here have decent features. And we tested each of these for extended periods to get a deeper understanding of the features. 

We hope the guide helped you out in making a decision. In the meantime, stay safe and have fun racing!

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