Mugen MBX7R

Mugen MBX7R 1/8 Nitro Buggy Review

Mugen is known for their super easy to drive cars. Today, I review the Mugen MBX7R 1/8 nitro buggy and will share my thoughts on the pros and cons of the Mugen MBX7R nitro buggy.

Mugen MBX7R 1/8 Nitro Buggy Features Summary

Unboxing the Mugen MBX7R 1/8 nitro buggy, the first thing you will see is the body, which is the same body as the Mugen MBX7R Eco. The body is pre-cut around the edges, which is great if you dislike cutting out bodies. The only thing you will need to cut out is the opening for the fuel tank as well as the opening for the engine head.

The kit comes with a 3mm A7075 hard anodized chassis, 5mm A7075 aluminum front shock tower, 4mm A7075 aluminum rear shock tower, diff parts and more.

Mugen MBX7R 1

Setting Up and Mugen MBX7R Nitro Buggy Review

My Setup

The first thing I added is the Raw Speed carbon shock towers in the front and rear, mainly in order to generate more grip and not so much about the weight. My setup includes adding titanium trim buckles, LRP battery, RX Legend 4 and Savox 2274 Servo .

Mugen MBX7R 3

The Build

Overall, I had a great experience with the build and found the quality of the metals and plastics as well as the fit and finish to be very good.

While polishing the shock shafts, I noticed that there was a little compression in the shock cartridge when I tightened the cap all the way down. So you can use the Schumacher U2761 diff shims to shim the cap just a little with reduced friction.

I used the Mugen Premium Grease on the outdrive and highly recommend you do so too. If you service your diffs on the same race day, the grease will still remain a clean white. The Mugen Premium Grease is indeed a very sticky, high quality grease.

Mugen Premium Grease

Overall Performance of the Mugen MBX7R

I would consider the kit setup in this car to be in the medium range and I wouldn’t consider it to be awesome. While you can dial the car in with an awesome setup and make it awesome, the problem is many of these Japanese cars come with 8-Hole x 1.3mm pistons, which is not the style of pistons that we are going to use very often on a US-style track. For US-style tracks, most of us will use 6-Hole 1.3mm pistons or 5-Hole 1.5mm pistons.

With that said, the car does jump very well and is easy to control. It is very consistent but it doesn’t land the best right out of the box. However, once I changed the pistons to 6-Hole 1.33mm pistons, the car lands really well.


As mentioned, Mugen is known for their super easy to drive cars. However, this is not the case with the Mugen MBX7R nitro buggy. Mugen has shed their reputation of being super lazy or super easy to drive in favor of a more aggressive approach. There are some who like it and others who have found the new style to be a little harder to hang on to.

To tame the car, you can either detune it by putting in some inline axles or putting underdrive gears in the back to lock the car down and make it more predictable entering the corner.

Overall, the car can generate a lot of corner speed but it does not feel the same as the last Mugen platforms. I really like that for some of the bigger sweeping corners, it feels that I can pick my spot with the wheel and just roll the throttle, and the car will track in a clean, arching trajectory on some of the fastest, sweeping corners.

Acceleration and Braking

The Mugen MBX7R brakes evenly and obviously you can set the brake bias. The acceleration is good but not great, as the car does not rip out of the corner but it does have a very controllable acceleration. On my average setup on an average surface, I would run the car 5-7,000 weight in the front, 7-10,000 in the center and 3-4,000 in the back.


While I wouldn’t classify the Mugen MBX7R as the most durable car, it is indeed very durable and not fragile by any means. I’ve broken the front arms from doing some jumps, but those were from my own mistakes.


I would consider the Mugen MBXR7R to be one of the better value cars on the market. The metal and plastic components are definitely a deal for the price you pay, considering the quality of the components.

Mugen also ranks in the top for the 1/8 scale team support and there are all kinds of setups available on There is also a solid following of the Mugen brand around the world.


The after-market for the 1/8 scale industry isn’t as robust as many of the 1/10 scale industry. This is probably due to the fact that it is not needed, because of the different culture in the 1/8 scale world. With that said, there are still many companies out there making parts for this car, and you can also get optional items such as aluminum hubs or heavier pillow balls directly from Mugen.


With the Mugen MBX7R Nitro Buggy , it feels like Mugen has listened to their customer base and made this car much more aggressive than any other Mugen cars in the past. I really like the overall fit and finish and it feels like you are working on a high-quality race car.

In general, there are some things about the Mugen MBX7R that I think could be better. For example, it would have been better to have the steering post key into the chassis.

The center diff and braking could also be improved because the setup is cumbersome. While it does not take a lot of work to take the front and the rear diffs out of the car for quick fluid changes, it is a pain to take the whole center braking system out. It would have been better if Mugen had split the center diff.

In conclusion, I would recommend getting the Mugen MBX7R 1/8 nitro buggy for the value and quality of components you will get.

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