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BowFlex SelectTech 840 Adjustable Kettlebell

  • Based on 7,531 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, Jun 8
Order within 23 hours and 22 minutes
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Features

  • TURN OF A DIAL: With the turn of a dial, you can easily adjust from 8 to 40 lbs., rapidly switch from one exercise to the next, and perform a wide variety of full-body exercises.
  • SPACE EFFICIENT: Replaces up to 6 kettlebell with weights at 8, 12, 20, 25, 35, and 40 lbs.
  • 2-MONTH FREE TRIAL: Try our JRNY All-Access Membership for 2 months, free.
  • JRNY MOBILE-ONLY MEMBERSHIP: Workout at home or on the go with inspiring trainers, and just-for-you adaptive workouts, from your phone or tablet.
  • WIDE WEIGHT RANGE: Offers a variety of workouts, including swings, rows, squats, twists and more.
  • SPACE-SAVING DESIGN: Ensures a quality workout from nearly any room in your home.

Description

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. Our JRNY Mobile-Only Membership with Motion Tracking is ideal for strength training at home or on the go; try it free for 2 months from your phone or tablet. With the 840 Kettlebell, you'll combine cardio and strength in one quick, effective workout, helping you build muscle, burn fat, and boost confidence. JRNY subscription required. This offer’s availability is subject to change without notice. At end of free trial, JRNY membership automatically renews at membership rates until canceled.

Brand: Bowflex


Color: Black


Item Weight: 40 Pounds


Material: Composite


Special Feature: Adjustable, Ergonomic


Brand Name: Bowflex


UPC: 708447912961


Number of Items: 1


Global Trade Identification Number: 61


Manufacturer: Johnson Health Tech Trading


Model Number: 100790


Part Number: 100790


Unit Count: 1.0 Count


Item Type Name: Bowflex SelectTech 840 Kettlebell


Included Components: Kettlebell


Warranty Description: 2 years


Item Weight: 40 Pounds


Item Dimensions L x W: 8.82"L x 7.01"W


Handle Diameter: 28 millimeters


Number of Pieces: 1


Color: Black


Style: Bowflex Kettlebell 8-40lbs


Material: Composite


Handle Material: Plastic


Other Special Features of the Product: Adjustable, Ergonomic


Target Use Body Part: Shoulder


EU Spare Part Availability Duration: 5 Years


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Jun 8

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Perfect kettlebell for anyone, especially seniors!
Outstanding! We love this device. Makes working out easy, but with great results. 6 weeks in and both my wife and I love it. 2x daily workouts for each of us without leaving the bedroom! The adjustable weight function is a great idea. Solid construction. The weights hold on well. We had to leave the house for a week to watch grandchildren out of state and took it with us to maintain our work out schedule. We both feel a stronger core, glutes and thighs, as well as biceps - I’m seeing definition I have not seen in years. Don’t hesitate to- get this and get off your butt and start getting a life back. This will remove your excuses: affordable, no gym membership or “staring at you” at the gym, and one device that is itself a full set of kettlebells. We are 70+ and love this. ... show more
Reviewed in the United States on March 7, 2026 by Robert Jones

  • Compact, sturdy, and super convenient
This adjustable kettlebell has been one of the best things I've added to my home gym. The weight changes happen quickly and smoothly, and each setting feels stable with no wobbling or moving. The handle is easy to hold and has enough room for exercises that can be done with one or two hands. It takes up a lot less space than having a lot of kettlebells, but it still feels just as strong when you swing, row, squat, or press. This is a great piece of equipment for anyone who wants to be able to do a lot of different things without having to buy a lot of equipment. ... show more
Reviewed in the United States on November 19, 2025 by Adam

  • Excellent
This very much exceeded my expectations and I am very pleased. High quality, well made, and easy to switch the different weight settings. Perfect for home use., takes up very little space. I highly recommend.
Reviewed in the United States on April 30, 2026 by Vermont57

  • Adjusting the weight is quick, smooth, and reliable. None better. BowFlex SelectTech 840.
Adjusting the weight is the best. Put weight in, rotate dial as it smoothly clicks at each position, pull weight out. I can't imagine it be be done any faster, and it has a high quality solid feel when doing it. The rest of it is also high quality.
Reviewed in the United States on February 13, 2026 by Books Customer Since 1996

  • Good weights for a beginner
I like these a lot. I like the ease in changing weights. Wish the handle was shaped differently.
Reviewed in the United States on February 3, 2026 by jaime weaver

  • Great buy
Amazing. Space saver. Adjustable weight is game changer. Easy to use.
Reviewed in the United States on February 16, 2026 by Derek Wingard

  • Versatile and Space-Saving – Perfect for Home Workouts! Versatile and Space-Saving – Perfect for Home Workouts!
The Bowflex SelectTech kettlebell is a game changer for my home gym. It’s super easy to adjust the weight with just a quick turn of the dial, and it replaces multiple kettlebells in one compact design. The build feels solid and durable, and the grip is comfortable for all kinds of exercises—swings, squats, presses, and more. It’s a great option if you’re short on space but still want a variety of weight options. Definitely worth the investment for anyone looking to level up their home workouts without cluttering the room. ... show more
Reviewed in the United States on April 18, 2025 Reviewed in the United States on April 18, 2025 by Marisa

  • Small space friendly
Perfect small space workout. You can get a pretty conplete workout from a single kettlebell and over gove uo a single square foot of storage. Plenty of workout guides online. Recommended
Reviewed in the United States on February 27, 2026 by Brandon Owen

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