BowFlex SelectTech 840 Adjustable Kettlebell
Best for
Best for travel / compact
Amazon rating
Amazon aggregate, one input among many in the Verdict Score
Current price
$127.50
Updated Jun 27, 2026 · 1 min read
Sources behind this verdict
10 reviewers weighted by source trust
The consensus
What reviewers found
Synthesized across the trust-weighted source mix below.
Across the reviewers we read, the BowFlex SelectTech 840 is the most space-efficient pick, replacing roughly six bells in one compact unit. Garagegymreviews.com, a high-trust source, gives it 4 of 5 stars and calls it strong value, and a 4.8 Amazon average across more than 7,600 reviews reflects broad satisfaction with the quick weight-change system. The disagreement is sharp on r/kettlebell, however: users repeatedly say it works for RDLs, squats and swings but is "terrible for get-ups," with balance issues that make cleans and snatches clumsy, and warn the plastic internals can break if dropped.
What reviewers liked
- High-trust source rates it good value and space-saving
- Replaces about six kettlebells in one compact footprint
- Fast weight changes praised by verified buyers
- Strong 4.8-star Amazon average across 7,600+ reviews
Where it falls short
- r/kettlebell users widely criticize balance on cleans, snatches and get-ups
- Community warns plastic internals can break if dropped
- Tops out at 40 lb, which many reviewers say is light for swings
- Angled edge can bruise during cleans per community reports
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Across the reviewers we read, the BowFlex SelectTech 840 is the most space-efficient pick, replacing roughly six bells in one compact unit. Garagegymreviews.com, a high-trust source, gives it 4 of 5 stars and calls it strong value, and a 4.8 Amazon average across more than 7,600 reviews reflects broad satisfaction with the quick weight-change system. The disagreement is sharp on r/kettlebell, however: users repeatedly say it works for RDLs, squats and swings but is "terrible for get-ups," with balance issues that make cleans and snatches clumsy, and warn the plastic internals can break if dropped.
- 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.
It works for me for RDLs, squats, and swings. Its terrible for Get-ups. I do not like it as a kettlebell but it can be functional in some ways.
The weight is adjustable up to 40 pounds. Generally most men will need to use heavier weights for important drills, most of the time.
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“The Bowflex Adjustable Kettlebell. A Review...” · YouTube
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