Bowflex SelectTech 840 Review: 6-in-1 Kettlebell Fitness Tool

person swinging kettlebell

Kettlebells can provide a full-body workout, increase core strength, and improve balance, making them an excellent way to upgrade your at-home workout. These weights are topped with arched handles, allowing them to be easily swung, held, or moved in many different ways. Because storing multiple kettlebells with different weights can be inconvenient, there are adjustable options. Kettlebells that are weight adjustable are more versatile, space efficient, and budget-friendly.

Choosing an adjustable kettlebell can seem like a big task because they come in a variety of shapes and sizes. To help you make your decision, we have put together a detailed review of the Bowflex SelectTech 840 Kettlebell. Because this kettlebell combines six weight options into one item, it is ideal for those looking to save some space in their home gym. These weights can be easily adjusted, thanks to their weight selection dial. If ease of use and a compact design are important to you, consider the Bowflex SelectTech 840 Kettlebell.

Why Trust Us?'s editorial team relies on the knowledge and experience of fitness and wellness experts including competitive athletes, coaches, physical therapists, nutritionists, and certified trainers. This helps us ensure the products we feature are of the highest standard. Collectively, the team has spent countless hours researching equipment, gear, and recovery tools in order to create the most accurate, authentic content for our readers. Customer satisfaction is also a key part of our review process, which is why we only feature products that are highly rated. More importantly, each member of our team is a fitness enthusiast. Fitness may be our job, but it is also our passion. Therefore, we strive to bring you products that we trust and would personally use.

A Quick Look at the Bowflex SelectTech 840 Kettlebell

For 30 years, Bowflex has been a prominent player in the home fitness industry. Bowflex is dedicated to creating innovative fitness tools that target the full body, like the Bowflex Blazeand the Bowflex PR1000. The Bowflex SelectTech 840 Kettlebell builds on this mission by providing next-level personalization. This exercise tool can be easily adjusted to match your workout needs. With this kettlebell’s selection dial, you can choose between six different weight levels, from eight to 40 pounds. Whether you are looking for full-body conditioning or muscle specific training, this Bowflex kettlebell can help to improve your at-home workout. With the purchase of this adjustable kettlebell, you are given access to a collection of trainer-led workouts through a one-year membership to the JRNY app. These video workouts are specific to the Bowflex SelectTech 840 Kettlebell and can be viewed anywhere.

By clicking on the product links in this article, we may receive a commission fee at no cost to you, the reader. Read full affiliate disclosure here.

Bowflex SelectTech 840 Kettlebell

Bowflex SelectTech 840 Kettlebell


  • Dimensions: 8.8"L x 7"W x 12.5"H
  • Total weight: 40.5 lbs.
  • Weight adjustments: 8-40 lbs.
  • Handle shape: Square
  • Materials: Steel, polypropylene, ABS, thermoplastic rubber
  • Warranty: 2 years



The Bowflex SelectTech 840 Kettlebell is 8.8 inches long, 7 inches wide, and 12.5 inches high. These compact dimensions make this kettlebell very space efficient because of its ability to be adjusted. Rather than storing several kettlebells of varying weights, you only need to find space to store this single Bowflex Kettlebell.


This adjustable kettlebell weighs 40.5 pounds total, which is also the top weight adjustment offered. There are six different weights included: 8, 12, 20, 25, 35, and 40 pounds. Setting this kettlebell to your desired weight is simple with the weight selection dial.

Handle Shape

This Bowflex kettlebell has a square handle similar to competition level kettlebells. Square handles are typically smaller than rounded ones so you can do exercises that only require one hand. This smaller shape reduces extra space that could cause your hand to slip while working out.


The Bowflex SelectTech 840 Kettlebell is made of steel, polypropylene, ABS, and thermoplastic rubber. While the weight plates and handle are constructed with durable steel, the outer shell that houses the weights is plastic. For this reason, it is important to be careful with this kettlebell to keep its plastic elements in good condition.


The warranty included with this Bowflex Kettlebell is a two-year parts warranty. In case you have to use this warranty one day, you should register your Bowflex SelectTech 840 Kettlebell on the Bowflex website. During the registration, you will have to include information about your kettlebell, such as its serial number and date of purchase.


  • 6 different weights in one kettlebell
  • Ergonomic handle to prevent hand from slipping
  • Weight is easily adjusted with dial
  • Provides full-body workout
  • Includes 1-year membership to JRNY app


  • Handle size is not ideal for two-handed exercises
  • Plastic shell is not as durable as other options

BUY: Bowflex SelectTech 840 Kettlebell

Final Thoughts on the Bowflex SelectTech 840 Kettlebell

The Bowflex SelectTech 840 Kettlebell is a compact, versatile fitness tool. With a range of weights from 8 to 40 pounds, this item combines six kettlebells into one. While typically used for full-body conditioning, the adjustability of this kettlebell allows you to target specific areas. If your at-home workout space is small, this option is ideal for saving space as you only need one kettlebell rather than several at different weights. Additionally, this kettlebell is a budget-friendly option, and the included one-year membership to the JRNY app gives you access to on-demand workout videos that are led by a trainer.

FAQs About the Bowflex SelectTech 840 Kettlebell

Is the Bowflex kettlebell worth it?

Yes. The Bowflex SelectTech 840 Kettlebell provides six weight options into one exercise tool. This makes it very versatile, space efficient, and budget-friendly. Instead of purchasing a more expensive set of kettlebells, you can get the same benefits by stocking your home gym with just one Bowflex kettlebell.

How do you adjust the weight on a Bowflex kettlebell?

The weight of the Bowflex SelectTech 840 Kettlebell is adjusted using the weight selection dial. This dial is located on the top of the hard plastic shell that holds the weight discs. If you select the lowest weight level, eight pounds, this kettlebell will only pick up the top weight disc when you lift it to exercise. The heaviest weight level will include lifting all weight discs.

Are adjustable kettlebells good?

Adjustable kettlebells are ideal for those looking for a space-saving, budget-friendly, and versatile exercise tool. You can get a full-body workout that is targeted to your specific fitness level while saving space in your at-home gym.

Discuss This Article