Outdoors & Fitness · Head-to-head
REP Fitness Adjustable Kettlebell vs PowerBlock Adjustable Kettlebell
Which should you buy? Here's the honest call, pulled from our full The Best Adjustable Kettlebells (2026): Four Bells Compared, One to Skip comparison.
The REP Fitness Adjustable Kettlebell offers the most authentic kettlebell shape and grip on a cast-iron body backed by a lifetime warranty. The PowerBlock is the runner-up for lifters who prioritize durability and a compact footprint over traditional feel.
REP Fitness Adjustable Kettlebell
Buy itThe closest an adjustable bell gets to a real cast-iron kettlebell, with a quick push-and-twist dial.
- Cast-iron competition-style body and a near-35 mm powder-coated handle give it a genuine kettlebell feel through swings and snatches
- Push-and-twist dial with internal nylon thermoplastic fasteners locks each plate, so there is minimal rattle under load, and it carries a lifetime warranty
- Each unit only spans five increments, so a range (8-16 kg, 16-24 kg or 20-40 lb) must be chosen up front and may not cover both light and heavy lifters
- The weight-locking fasteners are plastic, the one component we would watch over years of hard use
PowerBlock Adjustable Kettlebell
Buy itThe most rugged, compact option, with a magnetic pin that changes weight in seconds.
- All-steel construction and a magnetic steel-pin selector make it the most durable-feeling bell here, with a five-year warranty
- The flat, square body sits comfortably on the forearm in the rack position and takes up very little floor space
- The cowbell-like square profile feels awkward for halos and get-ups compared with a rounded bell
- The light model offers only four increments (18, 22, 26 and 35 lb), so the jumps are large and it sits at a higher price
Side by side
| REP Fitness Adjustable Kettlebell | PowerBlock Adjustable Kettlebell | |
|---|---|---|
| Our verdict | Buy | Buy |
| Best for | Lifters who do technical, ballistic work and want the most authentic kettlebell shape and grip. | Press-, squat- and swing-focused lifters who want maximum durability and the smallest footprint. |
| Price tier | $$ · mid-range | $$$ · premium |
The bottom line
Our overall pick is the REP Fitness Adjustable Kettlebell - The closest an adjustable bell gets to a real cast-iron kettlebell, with a quick push-and-twist dial. Choose the PowerBlock Adjustable Kettlebell instead if press-, squat- and swing-focused lifters who want maximum durability and the smallest footprint.
Want the full picture, including the other options we compared and the popular one we'd skip? Read the complete The Best Adjustable Kettlebells (2026): Four Bells Compared, One to Skip.