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Adjustable Competition Kettlebell

4.9
Rated 4.9 out of 5 stars
290 Reviews
$220.99 USD

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

Kettlebell Weight: 12-20.5 KG Adjustable Kettlebell
Color: Black
Single or Pair

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 Why 65,000+ Lifters Choose Bells of Steel

Product Features

  • 41 Weight Settings. Precise 0.5 kg Increments. One Competition-Grade Bell.

    Replace an entire 12–32 kg kettlebell set with precise 0.5 kg jumps, giving you way more control than most adjustable kettlebells on the market. Build strength smoothly, without making big jumps that wreck your form.

  • Minimal Footprint. Maximum Programming.

    Get a full kettlebell rack worth of versatility in the space of your favorite lifting shoes. At 8.25" wide and 11" tall, it’s perfect for garages, basement gyms, studios, and tight spaces where every square inch counts.

  • True Competition Size: Consistent Feel at Every Weight.

    Designed with official competition dimensions — 35 mm handle, consistent diameter, and balanced weight distribution — so swings, cleans, snatches, and get-ups feel natural; exactly as they should.

  • Progress Like a Pro — In 0.5 kg Steps

    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.

  • All-Metal Construction. Commercial-Grade Durability.

    A steel shell, iron plates, and a secure internal locking system deliver a rock-solid feel — with none of the plastic, rattling, or hollow sensations found in cheaper adjustables. Built to outlast even your biggest goals.

  • 4.9★ Rated. Backed by a Lifetime Warranty.

    Trusted by hundreds of lifters who compared it to fixed bells and premium adjustables, and chose this one bell to rule them all. Backed by our limited lifetime warranty on the shell.

  • Unlock 9–11.5 kg With the Plastic Bottom Attachment

    Get the Plastic Bottom Add-On to unlock the 9.5–11.5 kg range using your existing plates. Perfect for lighter single-arm exercises like hammer curls, preacher curls, and concentration curls—without a separate kettlebell.

  • Load It, Pack It, Take It Anywhere

    Toss your kettlebell into a gym bag or your car for park or travel workouts. Durable, compact, and road-trip ready, because your gains don’t take days off (and apparently, neither do you)

  • Match Your Style

    Pick your vibe: Black, Blue, Purple, or Yellow. Whether you’re color-coding your house of gains or just matching your kettlebell to your favorite training shoes, we’ve got a shade that suits you.

Product Details

Grab your kettlebell training by the horns with the Adjustable Kettlebell: now available in blue, purple, and yellow! This Adjustable Kettlebell can range from 12kg-32kg in 0.5kg increments, so you save money and space - no matter what exercises you (Turkish) get up to. Crafted like a competition-style kettlebell, the steel shell and iron weight plates keep the internal workings secure, so you don't have to worry about rattles and damage.

With 41 weight increments in one kettlebell with the expansion pack, this bad boy replaces a full kettlebell set and saves over $700 compared to purchasing standalone competition kettlebells.

The 20.5kg base includes the 12kg shell with 8.5kg of weight plates (1x 3kg, 2x 2kg, 1x 1kg & 1x 0.5kg), so you get 18 different increments with just the base model — yes, even that pesky 13kg! Add the 13kg expansion pack plates (2x 4kg, 1x 3kg, 1x 2 kg) for even more range.

IMPORTANT: The Adjustable Kettlebell is a fantastic tool, but it is not recommended when a fast transition of sizes is needed since changing the weights takes 1-2 minutes. If you need two different weights for swings and overhead work, we recommend getting two adjustable kettlebells — you save 10% when you buy a pair.

PRODUCT SPECS

Shipping Details

This product will be shipped in 1 box:

1x 20-ADJKB

  • 14" x 11" x 11" / 34 cm x 27 cm x 27 cm
  • 47 lb / 22 kg

You can find the SKU on the front of each box.

Manuals and Assembly

4.9
Rated 4.9 out of 5 stars
Based on 290 reviews
Total 5 star reviews: 259 Total 4 star reviews: 28 Total 3 star reviews: 3 Total 2 star reviews: 0 Total 1 star reviews: 0
99%would recommend this product
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290 reviews
  • MS
    Michael S.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 week ago
    Pair of Adjustable Competition Kettlebell

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

    Was this helpful?
  • GB
    Guy B.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    3 weeks ago
    Excellent space saving product

    I'm just getting into kettlebells and I'm also working with gymnastic rings, my own custom heavy clubs and adjustable mace , regular weights, ... I have a small home gym with limited space. Getting into kettlebell with this superb BOS adjustable kettlebell is perfect for my small setup. I even used 2x Weider 5.5lbs Olympic plates with rubber adaters for the 1 inch threaded rod, and used various small 1 inch plates and brought my 12-20kg kettlebell to 60lbs (28kgs). I:ll be looking to get the plastic bottom shell and possibly the smaller adjustable kettlebell as well.

    Was this helpful?
  • AL
    Alexander L.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    Delivers

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

    Was this helpful?
  • RB
    Richard B.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    Adjustable Kettlebells

    Great set of kettlebells. They will meet my needs for many years to come with the expansions pack. I had always heard about kettlebells being great for all around strength and now I understand why. I can get out to a gym much these days but the adjustable kettlebells take up barely any room in my apartment which was ideal for me. I would definitely recommend them.

    Was this helpful?
    Bells of Steel USA
    1 month ago

    Thanks for the fantastic review, Richard! We're so glad to hear the Adjustable Competition Kettlebell is working perfectly for your apartment setup. It's awesome that you're discovering firsthand why kettlebells are such a game-changer for all-around strength training. The fact that they barely take up any room while giving you years of growth potential with the expansion pack is exactly what we love to hear. Thanks for the strong recommendation!

    Yours in strength,
    BoS Crew

  • JD
    Josh D.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    Great addition to home gym

    I wanted to add kettlebells to my home gym. This is the best options. Easy to customize the weights and doesn’t take up a lot of space. Kettlebells seem very durable and handles just like a regular competition KB.

    Was this helpful?
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WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov
A Bells of Steel Adjustable Competition Kettlebell with a metallic handle stands beside four stacked black weight plates on a white background. The kettlebell displays an embossed logo on its front.
Bells of Steel

Adjustable Competition Kettlebell

From $220.99 USD

Grab your kettlebell training by the horns with the Adjustable Kettlebell: now available in blue, purple, and yellow! This Adjustable Kettlebell can range from 12kg-32kg in 0.5kg increments, so you save money and space - no matter what exercises you (Turkish) get up to. Crafted like a competition-style kettlebell, the steel shell and iron weight plates keep the internal workings secure, so you don't have to worry about rattles and damage.

With 41 weight increments in one kettlebell with the expansion pack, this bad boy replaces a full kettlebell set and saves over $700 compared to purchasing standalone competition kettlebells.

The 20.5kg base includes the 12kg shell with 8.5kg of weight plates (1x 3kg, 2x 2kg, 1x 1kg & 1x 0.5kg), so you get 18 different increments with just the base model — yes, even that pesky 13kg! Add the 13kg expansion pack plates (2x 4kg, 1x 3kg, 1x 2 kg) for even more range.

IMPORTANT: The Adjustable Kettlebell is a fantastic tool, but it is not recommended when a fast transition of sizes is needed since changing the weights takes 1-2 minutes. If you need two different weights for swings and overhead work, we recommend getting two adjustable kettlebells — you save 10% when you buy a pair.

Kettlebell Weight

Color

Single or Pair

  • Single
  • Pair (Save 10%)
View product

  • FREE SHIPPING

  • TRUSTED SINCE 2010

  • EXCELLENT WARRANTY