Best adjustable kettlebells for a home gym in 2026

Adjustable kettlebells let one bell cover a range of loads that would otherwise take a full rack of fixed cast iron bells. This matters most in small home gyms, apartments, or garages where floor space and budget are both tight.

What’s the best adjustable kettlebell?

The Bells of Steel Adjustable Competition Kettlebell (12-32 kg) ranks best overall because it lists 41 weight settings with 0.5 kg micro-loading and a steel-on-steel locking system with no plastic parts. The REP Fitness adjustable bells cost less for buyers who don’t need that range, and the Bowflex SelectTech 840 swaps weight fastest thanks to its dial. Below are seven picks ranked from our product research, covering steel competition bells, magnetic-pin PowerBlock models, and a budget plate-loaded option from Marcy.

How we ranked these picks

Ranking used only published specs and prices from each maker’s product page: weight range and how fine the jumps are, handle diameter, build material and locking mechanism, listed warranty terms, and price per pound of usable range. No kettlebell on this list was physically tested; see /how-we-research/ for the full method. Where a maker didn’t list a spec — like handle diameter for the REP Fitness bells or a warranty term for Bowflex and Bells of Steel — that gap is noted rather than guessed.

Weight range and increment size carried the most weight in ranking because they decide how useful the bell is across different lifts. A swing or clean session wants coarse jumps; single-arm carries or presses want finer steps. Handle diameter matters for grip comfort and two-hand swings, and warranty length is the clearest signal of how long a maker expects the mechanism to hold up.

Adjustable kettlebell comparison table

Model	Maker	Weight range	Price	Warranty
Adjustable Competition Kettlebell (12-32kg)	Bells of Steel	12-32 kg	$332.99	Not listed
Adjustable Kettlebell (16-24kg)	REP Fitness	16-24 kg	$219.99	Not listed
SelectTech 840	Bowflex	8-40 lb	$149.00	Not listed
Pro Adjustable Kettlebell 18-35 LB	PowerBlock	18-35 lb	$199.00	5-year
Pro Adjustable Kettlebell 35-62 LB	PowerBlock	35-62 lb	$349.00	5-year
Apex Adjustable Kettlebell	Marcy	20-50 lb	$74.99	Not listed
Adjustable Competition Kettlebell (12-20.5kg)	Bells of Steel	12-20.5 kg	$220.99	Not listed

How fine are the weight jumps?

Most adjustable kettlebells in our product research move in 1-2 kg (or larger) steps between settings. That’s fine for swings or cleans where you’re jumping load ranges anyway, but it can leave gaps for single-arm accessory work like presses or rows.

The Bells of Steel Adjustable Competition Kettlebell breaks from that pattern with 0.5 kg micro-loading across 41 total settings from 12-32 kg (our calculation: that’s roughly 20 kg of range split into 0.5 kg steps). PowerBlock’s two Pro models use four fixed increments each — 18/22/26/35 lb on the lighter unit and 35/44/53/62 lb on the heavier one — which is coarser but backed by a stated 5-year warranty on both.

Model	Increment style	Lowest setting	Highest setting
Bells of Steel 12-32kg	0.5 kg micro-loading	12 kg	32 kg (48 kg with extension kit)
PowerBlock 18-35 LB	4 fixed steps	18 lb	35 lb
PowerBlock 35-62 LB	4 fixed steps	35 lb	62 lb
Bowflex SelectTech 840	Dial-adjustable	8 lb	40 lb
Marcy Apex	Plate-loaded (2.5/5/10 lb plates)	20 lb	50 lb

Can you expand an adjustable kettlebell later?

Yes, on at least two models in our product research. Bells of Steel sells a Wildman Poison Pill extension kit for $239.99 that adds four 4 kg cast iron plates plus extender bolts, pushing the 12-32 kg bell’s ceiling toward 48 kg. It also sells a $41.99 plastic bottom that drops the minimum starting weight, cutting the empty bell down to about 9 kg (0.7 kg lighter than the stock steel bottom) and opening a 9.5-11.5 kg range for beginners or single-arm work.

Marcy’s Apex bell works the same way in reverse: it ships at 20 lb with a 15 lb weighted handle, four removable spacer disks, and a 5 lb bottom plate, then climbs to 50 lb once you buy standard 2.5, 5, or 10 lb weight plates separately. That keeps the sticker price low but adds real cost once you factor in plates — worth checking against a full set of /cast-iron-kettlebell/ options if you already own standard plates.

Steel-on-steel vs. magnetic pin vs. dial: which lock lasts?

Bells of Steel uses a steel-on-steel locking system on its competition bells, which the maker markets specifically as avoiding “fragile plastic” parts. PowerBlock uses a magnetic selector pin on both Pro models, calling it a “heavy-duty” pin for secure weight selection, and backs that mechanism with a 5-year warranty. Bowflex’s SelectTech 840 uses a weight selection dial instead of a pin or bolt system.

None of the three approaches is shown to fail faster than another in our product research — this is a design preference, not a durability ranking, since only PowerBlock states a warranty term. If mechanism longevity worries you more than price, PowerBlock’s stated 5-year coverage is the only concrete backing in this roundup.

Handle diameter and grip comfort

Handle diameter affects two-hand swings and rack position comfort more than most other specs. Our product research lists 35 mm handles on both Bells of Steel competition bells and 32.77 mm on both PowerBlock Pro models — close to competition standard, which PowerBlock states directly for the 35-62 lb unit. Marcy, Bowflex, and REP Fitness don’t list a handle diameter figure.

A thicker handle (35 mm) demands more grip strength on heavy carries, which matters for lifters training grip endurance alongside kettlebell work. A slightly thinner 32.77 mm handle may suit smaller hands or higher-rep interval sessions better. Compare this against dumbbell handle sizing in /kettlebell-vs-dumbbell/ if you’re deciding between tools rather than just kettlebell models.

Price per pound of usable range

Using sheet prices and top weight settings, here’s what buyers pay per pound of maximum load (our calculation, single units, lowest listed price where variants exist):

• Marcy Apex: $74.99 ÷ 50 lb max = about $1.50 per lb (before extra plates)
• Bowflex SelectTech 840: $149.00 ÷ 40 lb max = about $3.73 per lb
• PowerBlock 18-35 LB: $199.00 ÷ 35 lb max = about $5.69 per lb
• REP Fitness 16-24kg: $219.99 ÷ 24 kg (about 52.9 lb) max = about $4.16 per lb
• Bells of Steel 12-20.5kg: $220.99 ÷ 20.5 kg (about 45.2 lb) max = about $4.89 per lb
• PowerBlock 35-62 LB: $349.00 ÷ 62 lb max = about $5.63 per lb
• Bells of Steel 12-32kg: $332.99 ÷ 32 kg (about 70.5 lb) max = about $4.72 per lb

This math treats max weight as the only value driver, which undersells bells with finer increments or better warranties. The Marcy Apex looks cheapest per pound, but its true cost rises once you buy extra plates separately, and it lacks the stated warranty PowerBlock offers.

Storage for adjustable kettlebells

Adjustable kettlebells don’t need a full rack like a fixed-weight set, but a stable shelf keeps them off the floor and out of doorways. Titan Fitness sells adjustable shelf add-ons for its Elite Series Mass Storage System, starting at $184.97 for a single 42” shelf, with full add-on units priced from $384.97 to $2,089.99 depending on tier count and length. RXD also lists a 72” kettlebell and dumbbell shelf with a rubber anti-slip surface for $210.00, sized for its RX3 modular rack system — a fit only if you already run RX3 rails.

If your gym also holds adjustable dumbbells, a shared shelf can serve both; see /best-adjustable-dumbbells-with-stand/ for stand options that pair with kettlebell storage in the same footprint.

Adjustable vs. fixed kettlebells: when each makes sense

An adjustable bell makes sense when floor space or budget rules out buying five or six fixed weights. A single Bells of Steel 12-32 kg bell replaces what would otherwise be six or seven separate cast iron bells at that range, and Bowflex states its SelectTech 840 replaces six kettlebells directly.

Fixed cast iron or competition-style bells still win on exact geometry at every weight and on grip consistency during max-effort lifts, since the handle and body never change shape between plates. If you’re training for a kettlebell sport or want a bell that matches competition dimensions at every single weight, start with /best-comp-kettlebell/ instead. For general strength, conditioning, and swings at home, the adjustable models above cover more ground per dollar.

Who should buy which pick

Buyers chasing the widest range with the finest control should get the Bells of Steel 12-32 kg bell and consider the extension kit later. Buyers on a tight budget who already own standard weight plates should look at the Marcy Apex first. Lifters who want a warranty backing their purchase should pick one of the two PowerBlock Pro models based on whether their top working weight sits closer to 35 lb or 62 lb. Anyone starting from zero kettlebell experience can review safe form basics at /kettlebell-for-beginners/ before loading any of these bells past their starting weight.

Bottom line

The Bells of Steel Adjustable Competition Kettlebell (12-32 kg) tops this roundup for its 41 weight settings, 0.5 kg micro-loading, and all-steel locking hardware, though its $332.99 price is the highest single-unit cost in our product research. PowerBlock’s two Pro models are the only ones with a stated warranty (5-year), making them the safer pick for buyers who want a guarantee behind the mechanism. Marcy’s Apex bell is the cheapest way in at $74.99, provided you already own or are willing to buy standard weight plates to reach its 50 lb ceiling. Prices and specs change, so check each maker’s page before buying.