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A rack of fixed kettlebells eats a whole corner of your floor and your budget at the same time. An adjustable kettlebell fixes that by letting one bell cover several weights. The Bowflex SelectTech 840 is the one most people should start with: you turn a dial to move between 8 and 40 lbs, and it replaces six separate kettlebells. Below you will find that pick plus nine more, sorted by what each one genuinely does better than the rest.
I’m Min — the founder and writer behind Gadgets Feed. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
The choices below differ most in how wide a weight range they cover, how fast the mechanism swaps, and how the handle feels in a two-handed swing. This breakdown of the adjustable kettlebell set covers ten real options and the specs that actually change how they feel.
Our Picks at a Glance
How To Choose The Best Adjustable Kettlebell Set
An adjustable kettlebell is a single bell whose weight you change, so one unit covers the range you would otherwise buy as a rack. Four things decide your purchase: the weight range, the size of each jump between settings, how fast you can change the weight mid-workout, and how the handle feels in your hands.
Weight Range And Increments
The top of the range tells you whether the bell will still challenge you after a few months of training. The bottom of the range tells you how much room you have for warm-ups and lighter technique work. Increments matter just as much: a bell that jumps in large steps can feel like it skips right past your next comfortable weight. A bell that moves in 2.5-pound or half-kilogram steps lets you add load in small doses instead of jumping past your next comfortable weight.
The Adjustment Mechanism
Most adjustable bells fall into two camps. Dial-and-plate designs, like the Bowflex SelectTech, let you twist a handle or dial and the plates lock in place while the unused ones stay behind in the base. Screw-and-plate designs, like the Bells of Steel, ask you to undo a nut with a wrench and swap plates by hand. Dial systems are faster between sets; screw systems tend to have fewer moving parts to wear. Either way, the plates need to lock hard enough to stay put during a snatch or a fast swing.
Handle And Shell Shape
The handle is where your hands live, so its diameter and texture decide whether a bell feels comfortable or punishing after twenty swings. A wider handle suits large hands and two-handed movements; a narrower handle gives a more secure one-handed grip. Some bells use a competition-style shell with a consistent diameter and balanced weight, which keeps your hand position the same at every setting. Others use a curved or contoured shell that is shaped to sit along your forearm during cleans.
Footprint And Storage
One adjustable bell takes up roughly the footprint of a single kettlebell, which is the whole point of buying one. Check the base dimensions if floor space is tight, and check whether the base has a flat bottom so the bell stands upright for storage. A flat base also lets you use it for floor-based moves like renegade rows.
Quick Comparison
| Model | Best For | Weight Range | Handle Diameter | Item Weight | Amazon |
|---|---|---|---|---|---|
| BowFlex SelectTech 840 Adjustable Kettlebell★ Best Overall | Most people, most workouts | 8 to 40 lbs | 28 mm | 40 pounds | Amazon |
| Yes4All Adjustable Kettlebell Set, Strength Training KettlebellBest Value | Cast iron feel on a budget | 7.8 to 40 lb | 1.2 inches | 40 pounds | Amazon |
| Northdeer Adjustable Kettlebell Set for Versatile Home WorkoutsCompact Pick | Light, small-space strength work | 10 to 20 lb | 1.15 inches | — | Amazon |
| Lifepro Powerflow Plus Adjustable Kettlebell 7 in 1 up to 44 lbs | Smooth twist-and-lock swaps | 3.5 to 22.5 lb | 1.5625 inches | 23.9 pounds | Amazon |
| HXD-ERGO Adjustable Kettlebell, 6-in-1 Quick-Switch | Fast two-handed transitions | 6.5 to 40 LBS | — | 40 pounds | Amazon |
| Rep Fitness Adjustable Kettlebell | Grip that holds up to sweat | 5 settings | 1.3 inches | 40 pounds | Amazon |
| PowerBlock Pro Adjustable Light Kettlebell, 18-35 lb | Compact shell for small gyms | 18 to 35 pounds | 32.77 mm | 15 kg | Amazon |
| Bells of Steel Adjustable Kettlebell Set | Fine jumps and competition shape | 12 to 20.5 kg | 1.375 inches (35 mm) | 20.5 kg | Amazon |
| BYZOOM FITNESS Pure Series Adjustable Kettlebell | Curved shell for heavy cleans | 30, 40, or 50 lb max | — | 30 pounds | Amazon |
| Polyfit Adjustable Kettlebell Set | Highest ceiling for strong lifters | 10 to 50 lbs (50 lb model) | 1.5 inches | 50 pounds | Amazon |
In‑Depth Reviews
1. BowFlex SelectTech 840 Adjustable Kettlebell
Our pick — 4.5+★ from 7,500+ verified ratings; the strongest balance of quality and price.
One dial, six weights, and a footprint that fits beside the sofa.
Buy this bell if you want one unit that covers a full beginner-to-intermediate range. A twist of the dial moves you through 8, 12, 20, 25, 35, and 40 lbs — six separate kettlebells replaced by one unit that sits in about the space of a single bell. That range covers a beginner’s first press and a strong lifter’s heavier swings without a second purchase.
The dial is the part everyone talks about. You spin it, the plates you are not using stay behind in the base, and you keep moving between sets instead of breaking your rhythm to rebuild the bell. For a full-body circuit of swings, rows, and squats, that speed is the difference between a workout and a weight-changing session. The handle is a 28 mm rubber-and-metal mix, which gives you a grip that does not slide when your palms get damp.
The honest caveat is the shape. The shell is built around a dial system rather than a traditional round bell, and that changes how some movements feel — particularly the ones where a smooth, round surface is supposed to roll across your forearm. It is a fit question, not a defect: if your training leans on heavy cleans and Turkish get-ups, a competition-shape bell suits you better. For swings, rows, squats, presses, and general strength work, this is the most capable single bell in this list.
Where it earns its keep
- Six weight settings from 8 to 40 lbs on one dial — a rack’s worth of range in one bell
- Fast between-set swaps keep a circuit flowing
- Space-saving footprint suits apartments and small home gyms
- Rubber-and-metal handle holds grip when hands get sweaty
Where it asks something of you
- The dial shell shape feels different from a round competition bell on forearm-heavy moves
- It is the heaviest single unit here at 40 pounds, so plan where it lives
Buy this if: you want one bell that covers a full beginner-to-intermediate range without a rack on your floor.
Think twice if: your training is built around competition-style cleans and get-ups, where a round shell and consistent handle feel better.
2. Yes4All Adjustable Kettlebell Set, Strength Training Kettlebell
Solid cast iron and a wide two-hand handle for people who like their bells to feel like bells.
If the plastic-and-dial look of a modular bell puts you off, this one takes the opposite approach. It is built from cast iron, weights 40 pounds in total, and gives you seven settings — 7.8, 12.4, 17.9, 23.9, 29.9, 35.4, and 40 lb. You swap plates by hand using visible markings on each one, and a locking mechanism holds them in place during swings, squats, presses, and lunges.
The handle is 1.2 inches wide with a non-slip texture, sized for two-handed work. The flat base lets the bell stand upright for storage and supports floor-based movements, which is more than some bells manage. Durability is the quality that carries this pick — cast iron does not care how many times you drop into a set of swings.
Here is the thing worth knowing before you buy. The plates are marked with their weights, and not every one measures exactly what the label says. It is a small discrepancy on a working tool, but if you are tracking load precisely for a program, weigh the stack once and note the real numbers. Other than that, this is a straightforward, hard-wearing bell at a value price.
The value read: seven cast-iron settings and a 1.2-inch two-hand handle for the entry-level tier — you are paying for metal, not a mechanism.
One honest note: the plate markings do not always match the real weight, so verify the stack if your program depends on exact numbers.
Reach for this if: you want an iron bell with a familiar feel and a wide handle at the budget end.
Look elsewhere if: you need dial-fast weight changes mid-circuit rather than hand-swapped plates.
3. Northdeer Adjustable Kettlebell Set for Versatile Home Workouts
A slim, bright little bell for lighter work in tight rooms.
Not everyone needs forty pounds. This one tops out at 20 lb and steps through 10, 12.5, 15, 17.5, and 20 lb on a rotating dial, so it suits someone easing into kettlebell training or adding light volume to a cardio routine. The chrome-plated solid steel body keeps it compact, and the finish gives it a clean look you will not mind leaving out in a home gym corner.
The handle measures 1.15 inches across — narrow, and meant for a secure one-handed grip. Compare that with the Lifepro down this list, whose handle runs 1.5625 inches and asks more of smaller hands. Build quality is what the finish and reputation of this bell rest on, and the smooth handle is shaped to stay comfortable across a session.
The catch is the range. Twenty pounds is a ceiling, not a starting point for a strong lifter, and the increments are fixed at 2.5 lb. If you already swing a 35-pounder, this will be a technique and warm-up tool rather than your main bell. Buy it as a compact, well-made light bell and it makes sense; expect it to carry your heavy work and it will run out of headroom quickly.
What makes it pleasant
- Chrome-plated solid steel body stays compact and tidy
- Five settings from 10 to 20 lb on a simple rotating dial
- 1.15-inch handle gives a secure one-handed grip
What limits it
- 20 lb ceiling rules it out as a main bell for stronger lifters
- Fixed 2.5 lb steps leave no room for finer progression
Best suited to: lighter training, warm-ups, and anyone who wants a small bell that looks good sitting out.
Skip if: you need a bell to grow with you past the light-to-moderate range.
4. Lifepro Powerflow Plus Adjustable Kettlebell 7 in 1 up to 44 lbs
Twist the handle, hear the click, and the plates you do not need stay in the base.
The adjustment routine on this bell is quick and reassuring: you turn the handle, hear a click when it locks, and the plates that are not selected stay behind in the base. Seven settings run 3.5, 7, 10, 13, 16, 19.5, and 22.5 lb. At 23.9 pounds overall it is notably lighter to shift around than the 40-pound fixed-iron bells here, which matters if you move it between rooms.
The handle is a die-cast aluminum bar measuring 1.5625 inches across. Read that against the Northdeer above at 1.15 inches and you can see the difference is real — this one is built wide and friendly for bigger hands and two-hand grips. Inside, seven PP-reinforced steel plates sit in a fully enclosed body with no exposed edges, so nothing rattles loose mid-swing. The base itself is compact at 8.23 by 12.56 inches and stores the unused plates automatically.
The trade-off sits at the top end. The data says “up to 44 lbs” in the name, but the listed settings stop at 22.5 lb, so treat the actual working range as 3.5 to 22.5 lb. For lighter strength circuits, HIIT, and presses that is plenty; for heavy swings and deadlifts it will not go far enough. Buy it for smooth, quick swaps at moderate weights rather than maximum load.
The mechanism verdict: a handle-twist system with an audible click and self-storing plates makes this the smoothest weight change in the mid-range tier.
Read the range carefully: seven settings stop at 22.5 lb even though the listing name references 44 lbs, so plan for lighter-to-moderate work.
Fits best: moderate-weight circuits where you change loads often and want no fuss between sets.
Not for: heavy deadlifts and max-load swings that need a bell above 22.5 lb.
5. HXD-ERGO Adjustable Kettlebell, 6-in-1 Quick-Switch Kettlebell Sets
Six bells in one shell, with a twist that works in either direction.
The trick here is the two-way rotation. You turn the center knob in either direction to change weight, and the maker describes it as a one-second change — which keeps a fast circuit from stalling while you rebuild the bell. Six settings cover 6.5 to 40 LBS in a single compact unit, with the unused weights held in the base.
The shell is sized at 8.46 inches wide by 12.99 inches high, and the handle is shaped wide enough to welcome both hands for two-arm swings. Solid rust-proof steel construction and an ergonomic wide handle are the build story, aimed at keeping the bell sturdy through squats, presses, rows, and swings. The generous top end of 40 LBS is the same ceiling as the Bowflex above, but with fewer steps between the light and heavy ends.
One practical note for delivery day: the lid, base, and five weights arrive in separate pieces inside the box, with the base sitting on the foam. Assemble it once before your first session so you are not fumbling with parts mid-workout. The simpler mechanism is a plus for longevity, and the dual-direction twist is genuinely convenient.
Strong points
- Twist in either direction for fast weight changes between sets
- 40 LBS ceiling covers beginner through solid intermediate loads
- Wide handle suits two-handed swings
- Rust-proof steel shell built for repeated use
Trade-offs to weigh
- Arrives in pieces and needs assembling before the first workout
- Fewer fine steps than a bell that jumps in small increments
Made for: circuit training where you swap weights fast and want a double-hand-friendly handle.
Pass on it if: you prefer very fine weight jumps over a fast twist mechanism.
6. Rep Fitness Adjustable Kettlebell
A matte powdercoat finish that refuses to turn slippery when your hands do.
Most glossy bells get slick the moment sweat starts. This one takes the opposite route with a matte powdercoated surface, and its handle diameter is 1.3 inches — wide enough for a confident two-hand hold without feeling oversized. Change weights with a push-down-and-twist motion, and the bell clicks through five settings to replace five separate kettlebells.
The build is where the money goes. Internal nylon thermoplastic weight retainers hold each plate, and every internal weight plate is secured by its own set of fasteners, so the stack is unlikely to come loose during snatches or fast swings. A rubber bottom protects your gym floor and keeps the bell steady. The 40-pound unit is aimed at CrossFit, HIIT, and weight-lifting work — deadlifts, squats, get-ups, and snatches all on the menu.
The honest limit: five settings means bigger jumps than the dial bells ahead of it. If you are working carefully between a light and moderate load, you may find yourself waiting for a step that is not there. That aside, this is a well-engineered bell from a company that builds the rest of a home gym too, and the grip is a genuine reason to choose it.
what separates it: the matte powdercoat — a small finish choice that keeps your grip steady once your palms are damp.
Choose it for: sweaty sessions where grip security matters and five solid settings are enough.
Skip it for: programs that depend on very fine weight increments.
7. PowerBlock Pro Adjustable Light Kettlebell, 18-35 lb. Weight Set
All-steel and built to feel like one solid piece of iron, not a stack of plates.
This bell leans on steel and a contoured shell. It covers 18, 22, 26, and 35 pounds on a secure magnetic steel selection pin — push the pin, choose your weight, and the positive lock keeps it there. The handle runs 32.77 mm and the whole unit weighs 15 kg, so it is compact and steady for home or commercial use.
What owners respond to most is the adjustability — a quick, quiet change that feels solid in the hand. Comfort runs a close second, thanks to the contoured shell that is shaped to sit naturally against your forearm. The all-steel construction replaces four kettlebells in one, and the maker backs it with a 5-year warranty.
The question to ask yourself is the weight range. It tops out at 35 pounds, so it is best for intermediate loads rather than heavy max swings. If that ceiling suits your training, this is a premium steel bell with a mechanism designed to survive years of use.
Built to last: an all-steel body, a magnetic selection pin, and a 5-year warranty make this the most durable-looking bell in the premium group.
Made for: lifters who value a solid, premium steel feel and want a mechanism that lasts.
Not ideal for: anyone whose training has already moved past 35 pounds.
8. Bells of Steel Adjustable Kettlebell Set
Eighteen settings and a competition shell for lifters who count every half-kilo.
Nothing else on this list gives you this much control over load. The bell adjusts from 12 to 20.5 kg in 0.5 and 1 kg jumps — 18 settings in one unit, with no awkward gaps between weights. If your program lives on small progressions, this is the bell that respects that.
The shell is competition-shaped, with a 35 mm handle that stays consistent and balanced across settings. That consistency helps with cleans, snatches, swings, and Turkish get-ups — the ones where your grip position should feel the same no matter the load. Swapping plates is a manual job: undo the bottom screw with the included Allen key, loosen the nut with the hex wrench, swap plates, and lock it back down. It takes under a minute by the maker’s account and feels secure once closed.
The absence of a plastic dial is the point here — fewer parts to fail, a more solid feel, and a mechanism you can trust over repeated use. What it is not is a fast-weight-change bell, so if your training is high-intensity intervals rather than controlled strength work, a dial or twist design will suit you better. And the 20.5 kg ceiling is firm, so heavy lifters should look higher up this list.
What it gets right
- 18 settings from 12 to 20.5 kg in 0.5 and 1 kg jumps
- Competition-shape shell with a consistent 35 mm handle
- No plastic dial to wear out
What you should know
- Weight changes are manual, with a wrench, not a quick dial
- 20.5 kg max suit strength work, not heavy max-load sessions
Best for: lifters who progress in small increments and want a competition-style feel.
Look elsewhere if: you need to swap weights in seconds between high-intensity sets.
9. BYZOOM FITNESS Pure Series Adjustable Kettlebell
A curved shell shaped to spare your forearm during cleans and presses.
Heavy cleans are the move that turns a workout into a bruise. This bell is shaped for that problem: the Pure Series uses a curved surface engineered to contour to your arm, giving a smooth contact point during heavy cleans and overhead presses. It is the most considered comfort design in this group, and the difference shows up on every rep where the bell rests against your arm.
The mechanism is a patented quick-change locking system that swaps weights in seconds — the sort of speed that matters in HIIT, where a pause to rebuild the bell sends your heart rate down. It is available in 30 lb, 40 lb, and 50 lb max capacities, each covering five settings in one unit. The flat base stays put, plates hold silent during explosive movement, and the 30-pound unit is compact at 9 by 8.46 by 11.93 inches. Choose Glacier White for a minimalist look or Classic Black for a gym feel.
The one thing to sort before you buy is which capacity you need. The three sizes run to 30, 40, or 50 lb, so the range you get depends entirely on the model you pick — check that the top-end weight actually matches your training. Otherwise, this is the pick for anyone who has ever given up on cleans because of forearm contact.
The comfort case: a curved surface designed to sit against your arm softens the forearm-heavy movements that make round bells uncomfortable.
Ideal for: cleans, presses, and HIIT where forearm comfort matters and fast swaps keep you moving.
Double-check: which of the 30, 40, or 50 lb models you are buying before you commit.
10. Polyfit Adjustable Kettlebell Set – 5-in-1 Weights for Home Gym
The one that keeps going after the others have run out of weight.
This set goes higher than anything else here. The 50 lb model ranges from 10 to 50 lbs across five settings in a single unit, and the family also offers a 30 lb and a 40 lb version if you do not need the top end. For a lifter who has outgrown a lighter bell, this is the natural upgrade — the same one-unit idea, just with more ceiling.
The build is solid cast iron under a matte coating, and the handle is 1.5 inches across with a non-slip surface that is designed to pull moisture away so the bell does not slip out of your hands. Weights change in seconds so you can move between exercises without breaking your flow. The flat, compact body stores easily and looks tidy enough to leave out.
The catch is the weight of the thing itself — at 50 pounds it is the heaviest single unit here, so plan where it lives and how you will move it. The other note is that the five settings leave larger gaps than a fine-increment bell, which you may feel if your program moves in small steps. If a high ceiling and a secure grip are your priorities, this is the pick that goes furthest.
Why it earns a spot
- Highest ceiling on the list at 50 lbs for the 50 lb model
- Non-slip coating and a 1.5-inch handle for a secure grip
- Solid cast-iron build under a matte finish
What to expect
- Heaviest unit here at 50 pounds, so it is not easy to move around
- Five settings leave larger gaps than fine-increment bells
Buy it when: you need a heavy ceiling and want the biggest single-bell range in this group.
Choose another if: you want light, portable, fine-step adjustments rather than one heavy unit.
Understanding the Specs
Weight Range And Settings
The range is the lightest and heaviest weight a bell can hold; the settings are the stops in between. A wide range means the bell can grow with you, but the size of each jump matters just as much for fine progression. Bells here run from as low as 3.5 lb on the Lifepro to 50 lbs on the Polyfit, and increments range from 0.5 kg on the Bells of Steel to larger steps on five-setting bells.
Handle Diameter
A handle diameter is simply how thick the grip is. A 1.15-inch handle on the Northdeer suits smaller hands and one-handed work, while a 1.5625-inch handle on the Lifepro is wider and friendlier to larger hands and two-hand grips. There is no right size — match it to your hand size and to the movements you do most.
Adjustment Mechanism
Dial, twist, pin, or wrench-and-swap — each mechanism trades speed for simplicity. Dial and twist systems move fast between sets and store unused plates in the base. Pin systems rely on a positive lock. Wrench-based swaps have fewer moving parts and feel more solid, but they take longer. Weigh the speed you need against the simplicity you want.
Build Material And Base
Cast iron and alloy steel are the common build materials. They are dense and hard-wearing, and they feel like traditional bells. A flat base lets the bell stand upright for storage and use in floor-based movements. A rubber or coated bottom protects your floor. Look for the material and the base shape together — both affect how the bell behaves at home.
FAQ
Is an adjustable kettlebell as good as a set of fixed kettlebells?
How fast can I change the weight between sets?
Will the plates rattle or fall out during swings?
What handle diameter should I look for?
Can I use an adjustable kettlebell for Turkish get-ups and cleans?
How much floor space does an adjustable kettlebell take up?
Is cast iron better than a modular dial design?
Does a heavier adjustable kettlebell last longer?
What weight range should a beginner pick?
Do adjustable kettlebells work for two-handed swings?
Final Thoughts: The Verdict
The clearest answer for most people is the Bowflex SelectTech 840. Six settings from 8 to 40 lbs on a single dial cover a beginner’s first press and a stronger lifter’s swings, and you get that range without a rack of bells on the floor. It is the crowd favorite here — 4.5+ stars across thousands of owners — and its only real trade-off is a dial-shaped shell that sits differently from a round competition bell on forearm-heavy cleans.
If cast iron and a wide two-hand handle matter more than dial speed, the Yes4All delivers seven settings up to 40 lb at the value end. Want fine steps and a competition shape, take the Bells of Steel with its 18 settings from 12 to 20.5 kg. And if you need the highest ceiling in this group, the Polyfit 50 lb model reaches where the others stop.
Whatever bell you choose, check that its bottom setting is light enough for warm-ups and its top setting is heavier than what you swing today. Adjustability only pays off if the top setting is heavier than what you swing today.
How We Picked
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources & Methodology
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of November 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
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