Bowflex SelectTech 840 Adjustable-Weight Kettlebell

Last updated date: July 19, 2022

DWYM Score

9.8

Bowflex SelectTech 840 Adjustable-Weight Kettlebell

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We looked at the top Kettlebells and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Kettlebell you should buy.

Update as July 19, 2022:
Checkout The Best Kettlebells for a detailed review of all the top kettlebells.

Overall Take

This kettlebell gives you six different weight options in one build. You can start at 8 pounds and gradually work your way up to 40 pounds, all in one compact item. An ergonomic handle keeps you comfortable while you lift, and you can purchase on-demand classes to help you learn to use it.


In our analysis of 40 expert reviews, the Bowflex SelectTech 840 Adjustable-Weight Kettlebell placed 2nd when we looked at the top 10 products in the category. For the full ranking, see below.

From The Manufacturer

Swing into action with the Bowflex SelectTech 840 Kettlebell, the adjustable kettlebell that provides 6 different weights in one compact design! Save space by selecting the weight you want with the turn of a dial, allowing you to achieve total-body results from the comfort of home. With the 840 Kettlebell, you’ll combine cardio and strength in one quick, effective workout, helping you build muscle, burn fat, and boost confidence.

Expert Reviews

Expert Summarized Score

10.0
4 expert reviews

User Summarized Score

9.6
5,352 user reviews

What experts liked

Change resistance from 8-to-40 pounds with a simple dial turn. Adjustable weight makes switching between exercises more efficient and replaces the need for several units. Comes with access to trainer-led exercises.
- BestReviews
$180 for essentially six kettlebells
- Garage Gym Reviews
Easy to adjust
- Verywell Fit
Six weights in one, affordable compared to buying all six weights, easy to adjust
- Insider

What experts didn't like

Notably pricier than traditional models.
- BestReviews
Weight range is just 6 to 40lbs
- Garage Gym Reviews
Grip is a bit slippery
- Verywell Fit
Expensive, handle is less ergonomic than others, bulky, especially for use at a lighter weight
- Insider

An Overview On Kettlebells

Weightlifting is a great way to tone, strengthen and stay in shape. Dumbbells have long been the go-to tool for working out each arm separately, featuring two separate weights, connected by a bar that’s used for gripping. But some prefer another type of tool, called a kettlebell may be worth considering instead.

Although it might not sound like something you’d keep in your home gym, a kettlebell is actually a long-popular tool for athletes and fitness enthusiasts. It’s essentially a free weight in the shape of a cannonball with a handle for lifting. The kettlebell has a flat bottom that lets you set it on the ground or another surface when you aren’t lifting. The name came from the shape, which is similar to a teakettle.

Kettlebells are easy to learn and cost effective, but there are some downsides that keep them from being more widely used. Barbells, dumbbells and machine weights can achieve the same results, and many prefer them simply because the process of using them is a little more intuitive.

Once you get the hang of the kettlebell, though, it does have some benefits. It comes in one portable format, making it fairly easy to store between uses. You can also find kettlebells that let you adjust the weight as your strength improves. Instead of storing multiple dumbbells in varying weights, you’ll have one simple item you can tuck into a corner or store in a closet.

Kettlebells have their own unique exercises that you can learn and adapt. This can make them a great way to shake up your normal workout routine, reenergizing you. Once you’ve learned the basics of how to use a kettlebell, you can find exercises online to liven up your daily workouts.

The Kettlebell Buying Guide

  • Kettlebells are typically made from cast iron, which can scratch surfaces. They can also cause injury if you accidentally drop one, particularly if you’ve worked up to a heavier weight. You can find some that are coated with protective material to help protect your floors and yourself, although it’s still best to avoid dropping a kettlebell on a toe.
  • Cast iron can be prone to rust. A protective coating can help reduce the risk of this, which is especially important if you’ll be storing your kettlebells outdoors or in a moisture-heavy environment.
  • You can find kettlebells in a variety of designs if you’re looking to add a pop of color to your workout spaces. Some are bolder than others, so shop around for one that has the look you want.
  • Kettlebells can damage flooring, so consider using a mat for extra protection. Some kettlebells come with a covering that’s designed to safeguard surfaces.
  • Some kettlebells have seams or other weak spots that can eventually collapse under the strain. For a long-lasting, durable option, look for solid cast iron.
  • Kettlebells are available in weight capacities ranging from 5 pounds and up. Prepare to buy multiple kettlebells as your strength improves and you’re ready to move to the next level. Some kettlebells cover a range of weights that you can then adjust, allowing you to operate with just one kettlebell.
  • The shape and design of the handle can make a big difference in your lifting experience. Look for one that has anti-slip properties, as well as one that features ergonomics that will keep your hand comfortable.
  • Some kettlebell enthusiasts do double kettlebell exercises. You’ll obviously need to invest in two kettlebells of the same weight to do that, but it can be a great way to boost your workout.