Adjustable kettlebell for home gym: best picks on Amazon

The Bowflex SelectTech 840 uses a dial at the base of the handle to select weight. Turning the dial engages weight plates from the storage base, locking them to the handle for the chosen weight. The adjustment takes approximately three seconds, suitable for rest periods between sets.

The handle dimensions (diameter and width) match standard kettlebell proportions, maintaining the two-hand swing grip and one-hand clean grip that define kettlebell training. Unlike the PowerBlock's square block design, the SelectTech 840 provides the traditional kettlebell silhouette and swing arc.

At $179, the SelectTech 840 replaces approximately $300-500 in equivalent fixed kettlebell sets covering the same weight range.

The PowerBlock KB Heavy provides adjustable kettlebell capability in the 35-62 lb range for users whose training requires heavy ballistic loading. The block design concentrates weight close to the handle, affecting the swing arc slightly compared to traditional bell-bottom kettlebells, but the trade-off allows significantly higher weight in the same footprint.

For users progressing in two-hand swings toward competition kettlebell standards (32 kg/70 lbs for men, 16-24 kg for women), the KB Heavy provides intermediate loading before the investment in multiple full-size fixed kettlebells.

At $149, the PowerBlock KB Heavy suits the advanced home gym user.

Yes4All cast iron kettlebells are vinyl-coated for floor protection and grip texture. The cast iron construction provides the traditional kettlebell weight distribution with the center of mass at the bell base rather than the handle.

For users whose program calls for a single training weight (e.g., following a specific kettlebell protocol at one weight for a defined period), a fixed kettlebell is more cost-efficient than an adjustable unit used at one setting. Yes4All kettlebells are available from 5 to 80 lbs in 5-lb increments.

At $39 for the 25-lb size, Yes4All is the standard affordable cast iron kettlebell.

The KETTLE GRYP clamps onto the center of a standard dumbbell using a clamping mechanism, converting the dumbbell into a kettlebell-grip implement. The adapter works with most standard dumbbells including Bowflex SelectTech and PowerBlock adjustable models.

For home gym users who have already invested in adjustable dumbbells and want to add kettlebell exercises without another major purchase, the KETTLE GRYP provides the handle grip position at $35 rather than $179+. The swing mechanics differ from a purpose-built kettlebell due to the dumbbell weight distribution, but basic exercises (swings, goblet squats, presses) are functional.

At $35, the KETTLE GRYP is the bridge between dumbbell-only and kettlebell training.