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Kaevon - Bells of Steel Founder and CEO
TRUSTED BY 100,000+ HOME GYM OWNERS

“I built the adjustable kettlebell I wish existed when I started-now it’s helping thousands train smarter at home.”

"Most home gyms don’t have the space (or budget) for a full lineup of kettlebells. This adjustable kettlebell saves space, saves money, and grows with you-with the weight increments you need to keep progressing."

Get the Adjustable Kettlebell
Try it risk-free for 30 days
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BUILT FOR LIFE WARRANTY
OVER 300 5-STAR REVIEWS

"I looked everywhere for an adjustable kettlebell that actually felt right, but nothing came close"

So I built one with the right feel, solid balance, lasting durability, and smarter progression, while replacing the cost and clutter of a full set.

THE ADJUSTABLE COMPETITION KETTLEBELL

  • True Kettlebell Feel - Authentic Shape And Balance, No Bulky Adaptations.

  • Precise Progression - 0.5 Kg And 1 Kg Increments, No Big Jumps.

  • Confidence In Every Swing - Stays Tight Through Training, Premium Steel, No Rattle Or Questionable Durability.

  • Full-Lineup Versatility - Replaces A Full Set, Not Just A Few Bells, Saving Serious Space And Money.

  • More Ways To Train Your Way - Available In 4 Colors And In 12–20 Kg Or 12–32 Kg Ranges.

"...The one kettlebell to replace them all"

SHOP ADJUSTABLE KETTLEBELLS
Try it risk-free for 30 days

"Why This Kettlebell?"

MINIMAL FOOTPRINT

Get a full kettlebell rack worth of versatility in the space of your favorite lifting shoes.

STEEL CONSTRUCTION

Built from solid steel. Backed by our lifetime warranty. This isn’t plastic junk designed to break.

PROGRESS LIKE A PRO

Micro-loading helps beginners feel confident and gives advanced athletes the precision they need to break plateaus. No guesswork. No awkward leaps. Just smooth progression at your pace.

41 WEIGHT OPTIONS

From 12kg to 20.5kg with 0.5kg and 1kg increment plates. No more awkward jumps between weights.

TRUSTED BY 100,000+ HOME GYM OWNERS

THOUSANDS OF TRUSTED REVIEWS BY GYM ENTHUSIASTS

Pair of Adjustable Competition Kettlebell

These kettlebells are great! I use them all the time.

Michael S.
Verified Buyer

Delivers

It is everything promised. High quality hardware. Going to order after market washer as suggested by another reviewer, maybe they should be included.

Alexander L.
Verified Buyer

Excellent space saving product

I'm just getting into kettlebells and I'm also working with gymnastic rings.

Guy B.
Verified Buyer

Great set of kettlebells.

They will meet my needs for many years to come with the expansions pack.

Richard B.
Verified Buyer

Great addition to home gym

I wanted to add kettlebells to my home gym. This is the best option. Easy to customize.

Josh D.
Verified Buyer
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30-Day Returns
Financing Available
Lifetime Warranty

Adjustable Competition Kettlebell

4.9
Rated 4.9 out of 5 stars
375 Reviews
$249.99 AUD $279.99
Tax included Shipping calculated at checkout.

Save money & space with Adjustable Kettlebells! New colours available!

Kettlebell Weight
Colour: Black
Single or Pair
Financing Available
Free & Fast Shipping
30 Day Returns
Excellent Warranty
2 months ago

Worth every penny!

The ability to incrementally scale up your practice can not be overstated. The build quality is top notch, fast and free shipping is much appreciated, and customer service has been great. Really a brilliant design and execution. Will be buying another!

P
Patrick
Verified Buyer
I recommend this product

Product Details

“As a beginner to kettlebells this product has been a game-changer. The adjustable range lets me progress without buying multiple kettlebells, while maintaining proper form. It’s solid, well-made, and saves a ton of space.” — Robert D

The Adjustable Competition Kettlebell replaces an entire set with 41weight options packed into one tidy shell.

  • True kettlebell shape → unlike bulky competitor adjustables, ours feels just like the real thing. That means you can comfortably perform cleans, snatches, and flows without awkward, wrist-bashing design flaws.
  • Progress at your own pace with 0.5kg & 1kg increment plates (no more awkward, massive jumps).
  • Unlock “in-between” weights you won’t find in regular kettlebells.
  • Save thousands compared to buying a full set.
  • Free up floor space — one compact bell instead of a whole rack.

One bell to rule them all — beginner to advanced.


Why Kettlebells?


Because kettlebells do what bars and dumbbells can’t:

  • Strength + cardio in one go  build muscle and burn calories without swapping equipment.
  • Real-world strength  training that carries over to sports, daily life, and even hauling in your groceries.
  • Total-body efficiency  work multiple muscle groups at once, not just one at a time.
  • Compact powerhouse  a full gym’s worth of versatility in a fraction of the space.

They’re the overachievers of the fitness world — and now you only need one.

What's Included

12–20.5 KG Adjustable Kettlebell Includes:

  • 12 kg kettlebell shell
  • 1× 3 kg plate
  • 2× 2 kg plates
  • 1× 1 kg plate
  • 1× 0.5 kg plate
  • Allen key & wrench for adjusting


Warranty & Guarantees

Add your content here

Every kettlebell comes with a Limited Lifetime Warranty, so you can lift with confidence.

We design our gear to last through years of serious training, but if something ever goes wrong due to a defect in materials or workmanship, we’ve got your back.

Here’s the gist:

You’re covered against manufacturer defects for the lifetime of the product.

What’s not covered? Normal wear and tear, cosmetic scratches, or the aftermath of dropping your kettlebell off your roof (please don’t).

How it works: If you ever need to make a claim, just reach out to us with your order details and a quick description of the issue. Our team will review it and get you sorted as quickly as possible.

Other Questions?Contact our support team—we're here to help.

Shipping & Returns

We get it — shipping heavy gym gear raises some important questions. Here’s exactly what to expect:

Free Shipping: Available on all orders across the continental U.S. No hidden fees.

Shipping Time: Orders ship within 1–3 business days and usually arrive within 3–7 business days (during sales events, delivery may take up to 2 additional business days).

Fulfilled mostly from our main distribution centers in Los Angeles and Indianapolis for faster coast-to-coast delivery. Local to Indy? Pick up in-store!

Returns: All Bells of Steel products are backed by our return policy If you don’t love your order, return it within 30 days—simple and stress-free.

See the kettlebell in action


Reviews Summary
Customers say these adjustable kettlebells are extremely solid, sturdy, and well-built with excellent fit and finish. They appreciate the easy weight adjustment process, though many note it takes a couple of minutes rather than being instant. Users find the handle comfortable with good grip, and the bells feel balanced and secure during use. Many mention the space-saving benefits, replacing multiple fixed-weight kettlebells. The competition-style design receives praise for feeling like traditional kettlebells when in use. Some customers note occasional plate loosening during intense workouts and suggest checking tightness before sessions. Overall, users are highly satisfied with the quality, durability, and versatility for home gym setups.
4.9
Rated 4.9 out of 5 stars
Based on 375 reviews
Total 5 star reviews: 335 Total 4 star reviews: 37 Total 3 star reviews: 3 Total 2 star reviews: 0 Total 1 star reviews: 0
99%would recommend this product
Slide 1 selected
375 reviews
  • CD
    Chris D.
    Flag of United States
    Verified Buyer
    I recommend this product
    Rated 4 out of 5 stars
    1 month ago
    Overall a great product

    I have had my KB since Oct. I got yellow because I just wanted something other than black in the gym. The bells arrived, and they looked great. The yellow popped, and the finish was smooth. Recently, I took them with me to an annual training event. They traveled a few hundred miles with me in the back of the truck. No issues! Unfortunately, when I returned and transferred them back into my truck, I noticed when I got home, the speaker mesh had worn off the paint just from them shifting in turns and stuff. Today, I went to change the weight for a specific new program, and when I separated the halves, paint started to chip around the seam. Truly, when the paint gets bad enough, I will refinish them because they're really awesome and a space saver. The only reason it's not a five is that the paint is coming off too easily for an item that gets banged around by design.

    Bells of Steel Canada
    1 month ago

    It is great to hear that you have been enjoying your Adjustable Competition Kettlebell since October and that it has been such a space saver for your gym. That yellow finish definitely makes a statement.

    We understand your concern regarding the paint chipping around the seam and the wear from the truck ride. While these bells are built for tough workouts, the finish can sometimes be sensitive to friction during transport or when adjusting the plates. We appreciate you sharing this feedback with us as it helps us keep improving our gear.

    We are glad to know you find them awesome enough to refinish down the road. It sounds like they are getting some serious use.

    Yours in strength,

    The B.o.S. Crew.

  • BV
    Brian V. H.
    Flag of United States
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    Really well made and nice piece of equipment

    I like how sturdy the item is, including the tech for holding the individual weight pieces. Although it may take a few minutes over that other more easily adjustable brand (that uses plastic tabs), this feels much more solid. Hopefully the weights never crack under tension of the nut inside.

  • GR
    Gary R.
    Flag of United Kingdom
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    Fantastic addition to my home gym. Brilliant Customer Service.

    What a fantastic product and just great Customer Service. I left a phone message with Bells of Steel UK on the 30th April 2026. I got a phone-call back from a real person that day from Amanda?( I think) from Canada. She was super helpful and confirmed I could get these delivered from within the UK and, therefore not pay import taxes or bonkers delivery costs. My Adjustable KB 12-20.5kg and the add on weights upto 32kg arrived by 6th/7th May 2026!!!. I used the KB having changed the weight down to 12kg the day after arrival. Works like a dream. Assembly is easy and the KB just feels like a premium product. I’m really impressed. My home gym is now complete. Peloton Bike, Concept 2 Erg Rower, TRX and now, Adjustable KB.. job done. Thank you Bells of Steel UK.

  • JX
    Jason X.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    Works great

    Packages well easy to assemble and use

  • OL
    Oralie L.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 months ago
    Solid feeling Kettlebell with a traditional shape

    I bought the 12-20.5kg bell and it was very solid. The adjustment system is easy to figure out (it does take time to unscrew everything, but only a minute or two depending on how much weight you are adding or taking out). I liked the 12kg-20.5kg bell so much, I bought a 12-32kg bell when it restocked. I don’t have a lot of space or a true home gym right now. I enjoyed heavy barbell lifts in the gym for years, but my life has gotten busier and home workouts are much more doable. I hope to eventually have a true home gym setup, but these kettlebells give me a lot of variety in weight without taking up too much space. I really like how they look and how they feel. They don’t feel cheap. I decided to go for the BOS vs some of the other brands because these were the only ones that came with the 0.5kg and 1kg micro plates. Will I really use them that often? Not sure yet, but I do like that you don’t have to make 5ish pound jumps each time you want to increase the weight. Only regret was not buying my bells together to get the discount for multiple items. I’m expecting these to last a lifetime!

    Bells of Steel Canada
    2 months ago

    Oralie, this is an elite review 🙌

    It is awesome hearing how these adjustable kettlebells are fitting into your routine and your space. Getting that traditional feel with solid construction and a wide weight range is exactly what we were aiming for, especially for lifters like you who are transitioning from full gym setups to efficient home workouts.

    Love that you called out the micro plates too. Those small jumps can make a big difference over time, even if they do not get used every session. And yes, a minute or two to adjust is a small tradeoff for replacing an entire rack of kettlebells!

    We are pumped that you came back for the 12 to 32 kg as well. Sounds like you have a seriously versatile setup already, and we are honored to be part of your home gym journey.

    Yours in strength,

    The B.o.S. Crew.

Frequently Asked Questions

What weights are included?

The Adjustable Competition Kettlebell comes with a full range of weight plates so you can configure it from a light warm-up weight all the way to a challenging load — all with one bell.

How fast can I change weights?

Weight changes take just seconds — simply remove or add the magnetic plates and you're ready to go. No pins, no clips, no tools required.

Is this good for beginners?

Absolutely. The adjustable range means beginners can start light and progressively increase load as they build strength — without buying multiple kettlebells.

Is it HSA/FSA eligible?

Yes — our Adjustable Competition Kettlebell qualifies as a fitness/health expense under many HSA and FSA plans. We recommend confirming with your plan provider before purchase.