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 KETTLEBELL
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
433 Reviews
$220.99 USD
Shipping calculated at checkout.

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

Kettlebell Weight: 12-20.5 KG Adjustable Kettlebell
Color: 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.

Specifications

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

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


4.9
Rated 4.9 out of 5 stars
Based on 433 reviews
Total 5 star reviews: 392
Total 4 star reviews: 38
Total 3 star reviews: 3
Total 2 star reviews: 0
Total 1 star reviews: 0
99%would recommend this product
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Customers Talked About
433 reviews
  • PH
    Patrick H.
    Flag of United States
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 week ago
    Exactly what I was looking for

    I am getting back into KB training, and I don’t have a bunch of room for multiple bells, so the adjustable is just right. I was originally going to get a single bell, but ended up getting, and am really glad I did. And the yellow really pops. Great experience all around.

    Bells of Steel USA
    1 week ago

    Thanks for the 5 star review, Patrick! We’re thrilled the Adjustable Competition Kettlebell is the perfect fit for getting back into kettlebell training without filling your space with multiple bells. And yes, that yellow definitely brings some extra pop to the workout!

    Yours in strength, The B.o.S. Crew.

  • GA
    Gordon A.
    Flag of United States
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 week ago
    Versatile

    Weight change is super easy and can be done in under 90 seconds. Makes it super versatile for home gym use. Handle is a great size and feels great for all movements

    Bells of Steel USA
    1 week ago

    Thanks, Gordon! Love hearing how quick and easy the weight changes are. That kind of versatility is a huge win for a home gym, and a comfortable handle makes every movement feel even better. One kettlebell, plenty of ways to get stronger.

    Yours in strength, The B.o.S. Crew.

  • BL
    Benjamin L.
    Flag of United States
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 weeks ago
    Love These Kettlebells!

    I had been working with Kettlebells for about six months prior to purchasing these. Those bells were from Amazon or local stores, and fixed weights. I wanted to reduce the amount of storage space and have consistently-shaped kettlebells for working out. I ordered two of these adjustable kettlebells and they have been fantastic! Consistent shape, I can replace all of my other kettlebells I've had. Also, I ordered the purple color and they look great! Would definitely recommend purchasing these!

    Bells of Steel USA
    1 week ago

    Thanks so much, Benjamin! We love hearing that your Adjustable Competition Kettlebells have helped save space while giving you that consistent shape across every workout. Purple was a great choice too. Thanks for sharing the media and for the awesome recommendation!

    Yours in strength, The B.o.S. Crew.

  • JS
    Jamie S.
    Flag of United States
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 weeks ago
    Solid

    Love the handle size, and the versatility to adjust!

  • IP
    Ian P.
    Flag of Canada
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 weeks ago
    So good I bought another

    I’ve bought lots of BoS equipment over the years and this one is my favourite. Started doing kettlebell workouts over a year ago so I bought the 12-32kg adjustable KB to add to my kit list. Now I mainly do KB training so I picked up a second adjustable bell and they’re all I use in conjunction with my weighted vest. Solid construction, easy to change the weights, and the 0.5 and 1kg plates make progression that much easier. I highly recommend these

    Bells of Steel USA
    2 weeks ago

    Thanks, Ian! We’re honoured the Adjustable Competition Kettlebell has become your favourite piece of Bells of Steel gear and earned a second spot in your setup. Solid construction, quick weight changes, and those smaller plates make steady progression a whole lot smoother. Double bells, double the gains!

    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.