Battle of the Smart Home Kettlebells: Bowflex vs JaxJox

Today, we will be comparing and reviewing two of the most well-known adjustable kettlebells: The Bowflex SelectTech 840 and the JAXJOX KettlebellConnect 2.0. Let’s see which adjustable kettlebell is best for home gyms!

Comparison Bowflex vs JAXJOX

Price difference

There are two main reasons you might choose an adjustable kettlebell instead of a traditional set. They are more affordable.

The price difference between the Bowflex and JAXJOX kettlebells can be quite significant. The Boxflex is generally about half the cost.

  • Bowflex:$119
  • JAXJOX:$249

Both options are cheaper than buying a set from a high-quality brand such as Rogue Fitness. Rogue kettlebells are comparable in price at $305, not including shipping which can bring the total cost to $481.

Differences in size and weight

An adjustable kettlebell is a great choice for smaller spaces. It is important to make the most of your workout space.

The JAXJOX kettlebell has a larger base and is certainly more powerful.

  • Bowflex 840 8.8’’ L x 7.8’’ W
  • JAXJOX 14.8’’ W x 17.4’’ W

Although there are slight differences in the size of each individual, they can still be adjusted for their weights.

  • Bowflex 840 8lbs 12lbs, 20lbs 25lbs 35lbs, 40lbs
  • JAXJOX:12lbs, 18lbs, 24lbs, 30lbs, 36lbs, 42lbs

To verify their accuracy, I also tested the weights on a scale. The Bowflex weights were accurate, but the JAXJOX was often half to a full pound heavier than it claims. The heavier 42lb actually weighs 41.1.

Weight adjustment: Digital vs. physical

Both kettlebells have a plate locking mechanism that allows them to switch between six weights. The Bowflex 840 has a dial while the JAXJOX Kettlebell Connect2.0 uses a digital system.

Unfortunately, this is a case of how too much tech can make a product less useful.

Bowflex kettlebells are easy to use. You can set the kettlebell down and adjust its weight in less than a second.

JAXJOX requires that you wait approximately five seconds for the kettlebell to be placed down before the base turns on. After changing the weight, press a button and wait a few seconds until it adjusts.

Although it may not seem long, waiting 6-10 seconds can be detrimental to certain workouts. This is why I found myself often wanting to use the Boxflex kettlebell.

Bell shape and handle

The handle and bell shape of the JAXJOX kettlebell are what I like best. For men with larger hands, the JAXJOX’s hand is a little wider and easier to hold.

The bell on the JAXJOX has a larger diameter, which means that it covers a greater area of your forearms when it rests on them. This makes it easier to hold the kettlebell for moves like cleans, presses, and snatches.


The JAXJOX kettlebell’s main selling point is its ability to track your weights and sets within the app.

Although it sounds fantastic, it doesn’t seem to work. It is extremely difficult to even connect the kettlebell with the JAXJOX application. To get it to work, I had to unpair or uninstall the app and reinstall it.

The rep tracking system has not worked after being paired. I have tried to reach out to them several times during their working hours but they have not returned my messages. It doesn’t seem to work unless it does. Even if it does work, its capabilities are very limited.

One thing is good about JAXJOXs App: The classes.

This app has the most quality and variety of kettlebell classes I have ever seen. There are many classes to choose from, with different time frames. The app is $12.99 per month. However, it’s worth it for those who enjoy kettlebell workouts. As long as the classes are updated on a regular basis.

Final thoughts

I don’t think the JAXJOX Kettlebell Connect2.0 is worth the extra cost. Consider purchasing the Boxflex 840 kettlebell to join the JAXJOX classes.

Even though JAXJOX was able to lower the price of the Bowflex kettlebells, I still recommend Bowflex as the physical dial is much faster and easier to use.

Bowflex 840 Kettlebell

Purchase JAXJOX KettlebellConnect 2.0

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