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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 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
402 Reviews
$209.99 USD $220.99
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 402 reviews
Total 5 star reviews: 361 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
402 reviews
  • AD
    Andrew D.
    Flag of United States
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    3 days ago
    Outstanding Quality & The Ultimate Space-Saving Kettlebells

    I’ve been extremely impressed with these adjustable kettlebells. They’re rock solid, exceptionally well built, and feel like they’ll last a lifetime. The machining and fit are excellent, and there’s no compromise in quality compared to fixed kettlebells.

    I chose the adjustable version because I wanted to keep my home gym as minimalistic as possible. Instead of buying an entire rack of fixed kettlebells, these cover everything from 12kg to 32kg in a compact footprint. They’re perfect for both single and double kettlebell workouts, making them incredibly versatile for strength, conditioning, and accessory work.

    The weight changes are straightforward, and having two bells means I can perform virtually any double kettlebell exercise without filling my gym with dozens of individual weights. I’m already considering adding a third adjustable kettlebell to leave loaded at 32kg for heavier work while keeping the other two available for quick adjustments.

    If you’re building a home gym and want equipment that’s durable, versatile, and saves a ton of space, these are an easy 5-star recommendation.

    Bells of Steel USA
    2 hours ago

    Hey Andrew,

    Great to hear from you.

    It is awesome to hear how much you are enjoying the Adjustable Competition Kettlebells. We are thrilled that they have helped you keep your home gym minimalistic while still providing the versatility you need for your workouts. It sounds like they are a perfect fit for your space! 😊

    We really appreciate you sharing your experience and the photo. It is great to have you as part of the B.o.S. community. 🙏

    Yours in strength,

    The B.o.S. Crew.

  • CE
    Christopher E.
    Flag of United States
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    4 days ago
    Excellent kettlebell

    This is a great product! I have two other kettlebells and I just could not get the clean and press to work on those. I bought this in hopes that the compeition style would provide the additional room in the handle to make my hand fit right. It has worked great! In fact, now that I have learned how to do it properly on this one, I can use the other ones as well. The adjustments are easy enough to change as you need to progressively overload, but not the sort of thing you should plan to adjust on the fly between exercises.

    Bells of Steel USA
    1 hour ago

    Hey Christopher,

    Thanks for reaching out to us.

    It is awesome to hear that the competition style handle gave you the space you needed to nail your clean and press. We are stoked that it helped you level up your technique so much that you can even use your other bells now. It is great that the adjustments are working well for your progressive overload too.

    Yours in strength,

    The B.o.S. Crew.

  • DB
    Dan B.
    Flag of United States
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    6 days ago
    Excellent feel -- competition shape is so much better!

    The Bells of Steel adjustable KBs are excellent. I've used others for about 5 years, but this is my first competition style, and I'm so glad I made the switch. They feel so much more inviting and smooth to use. I had a Bowflex adjustable KB before, which was great for beginners, but the improved feel and complete lack of any rattling inside makes these so much more appealing to use. It's not quick to change the weight, but if you can manage 2 or 3 of these bells to set at different weights for different exercises with the plan to adjust their weights in small increments every month or so, they're perfect--all I'll need for the rest of my life.

  • 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 USA
    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.

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.