The PowerBlock Adjustable Kettlebell is the alternative shape pick. The cowbell-style flat-angle body genuinely makes overhead presses and rack work more comfortable than the round Bowflex SelectTech 840, but it changes how swings feel — purists prefer the round REP Fitness shape. Four weight settings is the smallest count in this round-up; the magnetic pin adjustment is novel and fast once you learn it. Best for users who care more about press/clean comfort than swing dynamics.
Strengths
- +Magnetic pin system for fast adjustment — no dial or twist required
- +Flat-angle shape rests more comfortably during cleans and overhead presses
- +Rugged steel shell — feels durable in hand
- +Compact footprint — narrower than the Bowflex SelectTech 840's stand
- +Lower price point than the REP Fitness or Bells of Steel
Watch-outs
- −Four weight settings only — fewer increments than competitors here
- −Cowbell shape (not true kettlebell) changes feel for swings — less natural
- −Smaller weight range than the REP Fitness or Bells of Steel
- −Magnetic pin can take training to engage smoothly on first uses
How it compares
Unique cowbell shape in this lineup — REP Fitness, Bowflex SelectTech 840, Bells of Steel, and Yes4All are all traditional round shapes. Magnetic pin adjustment is faster than the REP Fitness twist and the Yes4All disc system, slower than the Bowflex SelectTech 840 dial. Smaller weight range than the REP Fitness or Bells of Steel.
Who this is for
At a glance: lifters who do more pressing and cleaning than swinging, and prefer the flatter cowbell shape against the wrist.
Why you’d buy the PowerBlock Adjustable Kettlebell
- Magnetic pin system for fast adjustment — no dial or twist required.
- Flat-angle shape rests more comfortably during cleans and overhead presses.
- Rugged steel shell — feels durable in hand.
Why you’d skip it
- Four weight settings only — fewer increments than competitors here.
- Cowbell shape (not true kettlebell) changes feel for swings — less natural.
- Smaller weight range than the REP Fitness or Bells of Steel.
Rating sources
Our 4.3 score is the average of these published ratings. More about methodology.
