The Bowflex SelectTech 840 is the beginner-friendly default. The dial adjustment is the fastest mechanism among adjustable kettlebells — BarBend rated it 5/5 on adjustment speed — and the bundled stand keeps unused plates out of the way. The trade-off is the plastic shell: it's bulky, doesn't drop well, and feels less authentic for clean or snatch work. For someone starting kettlebell training at home and not sure how far they'll take it, this is the right risk-adjusted pick.
Strengths
- +Dial-and-set adjustment is the fastest in this round-up — rated 5/5 by BarBend
- +Six weight settings (8, 12, 20, 25, 35, 40 lb) covers most beginner-to-intermediate workouts
- +Includes a stand that holds unused plates safely
- +8 lb starting weight is the lowest in this round-up — better entry point for beginners
- +Most consistently-recommended adjustable kettlebell by mainstream review sites
Watch-outs
- −Plastic shell — durability is bounded; not built for repeated drops
- −Bulkier shape than fixed bells — cleans, snatches, and rack work feel different
- −Tops out at 40 lb — outgrown faster than the REP Fitness 16 kg model
- −Plastic exterior shows scuffs over months of use
How it compares
Fastest adjustment mechanism in this round-up — beats the REP Fitness, PowerBlock, and Bells of Steel on dial speed. Plastic shell and 40 lb ceiling are the downsides versus the all-metal competitors. Loses to the REP Fitness on swing feel; wins on convenience and the included stand. Easier first-purchase than the Bells of Steel.
Who this is for
At a glance: kettlebell beginners and casual users who want maximum convenience and a confidence-pick from a mainstream brand.
Why you’d buy the Bowflex SelectTech 840
- Dial-and-set adjustment is the fastest in this round-up — rated 5/5 by BarBend.
- Six weight settings (8, 12, 20, 25, 35, 40 lb) covers most beginner-to-intermediate workouts.
- Includes a stand that holds unused plates safely.
Why you’d skip it
- Plastic shell — durability is bounded; not built for repeated drops.
- Bulkier shape than fixed bells — cleans, snatches, and rack work feel different.
- Tops out at 40 lb — outgrown faster than the REP Fitness 16 kg model.
Rating sources
Our 4.4 score is the average of these published ratings. More about methodology.
