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Adjustable Competition Kettlebell

4.9
Rated 4.9 out of 5 stars
280 Reviews
$279.99 AUD

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

Kettlebell Weight
Colour: Black
Single or Pair
Notify me when available

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:

Flat-Rate Shipping: Most orders ship for much less, but no matter how big your setup gets, you’ll never pay over $199 AUD for shipping in Australia. Some conditions apply for remote or island addresses.

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 from our Melbourne warehouse. Local to Melbourne? Pick up in-store and skip the shipping fees!

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

Product Features

  • 41 Kettlebells in 1

    Grab the 12-32kg version, which includes the Expansion Pack & base model, to get to a WHOPPING 41 weight increments — with weight jumps as small as 0.5kg. Altogether, it's enough range for most to last a lifetime of kettlebell training in one tiny package.

  • Replaces a Kettlebell Set

    As you progress in strength and skill, you'll need more kettlebells and more room to store them. Luckily, this adjustable kettlebell replaces an ENTIRE set. Just store it in a corner, under the stairs, or in a candlelit shrine.

  • Save Hundreds of Dollars

    Buying enough competition kettlebells to replace this adjustable kettlebell would tally up to over $1,000, and that's BEFORE adding the shipping fees. talk about a kick in the bells. With an adjustable kettlebell, you'll save at least $700.

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 for sale — you save 10% when you buy a pair.


FAQS ABOUT ADJUSTABLE KETTLEBELLS

Are adjustable kettlebells safe for kettlebell swings? 

Absolutely! Adjustable kettlebells are designed with safety in mind. They have a sturdy construction and a secure weight system that allows for safe swings. Just make sure to use the adjustable weight kettlebell correctly and maintain proper form during your workouts for optimal safety. 

Are there any exercises I shouldn’t do with adjustable kettlebells? 

While adjustable kettlebells are versatile and can be used for many exercises, they may not be ideal for high-speed transitions between different weights during a workout.  

With adjustable kettlebells, you can elevate your training and save space in your workout area. To dive deeper into the benefits and considerations of our adjustable kettlebells for sale, check out our blog for an in-depth look at their pros, cons, and who they are ideal for.  

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.


4.9
Rated 4.9 out of 5 stars
Based on 280 reviews
Total 5 star reviews: 249 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
Slide 1 selected
280 reviews
  • GB
    Guy B.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 week 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.

  • AL
    Alexander L.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 week 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.

  • RB
    Richard B.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 weeks 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.

    Bells of Steel Canada
    2 weeks 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
    3 weeks 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.

  • A
    Alan
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    Have bells will travel

    Bells of Steel kettlebells are a great product. I have a solid partial set of Bells of Steel singles and doubles in my garage gym doubles 12 and 16's, singles 20, 24, 28, 32 KG, and I love them. But I also wanted the flexibility to take my training with me when I travel or when I want to work out at the beach or in the park. So I picked up a set of BS adjustables and built a dedicated storage system for the plates and tools. Now I can load the two bells and the storage unit right into my trunk and take my gym anywhere. The storage setup even doubles as a super-loaded suitcase carry implement. I would love to add doubles to my other singles, but the cost is just too much. I am hoping BS will offer some nice deals for Black Friday. I would love to get another 20KB bell for my garage gym.

    Bells of Steel Canada
    1 month ago

    Hey Alan,

    Great choice with the adjustable kettlebell, they are just the tool you need to keep your workouts efficient and easy to travel with!

    For your knowledge, we will be having some pretty sweet Black Friday deals for this year, so keep an eye out in the next week or so for when the sale drops. Hope you enjoy these adjustabells and put them to good use!

The Bells of Steel Adjustable Competition Kettlebell features a black design with a detachable handle and tiered, separated weight plates—versatile for any kettlebell set.
Bells of Steel

Adjustable Competition Kettlebell

From $279.99 AUD

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 for sale — you save 10% when you buy a pair.


FAQS ABOUT ADJUSTABLE KETTLEBELLS

Are adjustable kettlebells safe for kettlebell swings? 

Absolutely! Adjustable kettlebells are designed with safety in mind. They have a sturdy construction and a secure weight system that allows for safe swings. Just make sure to use the adjustable weight kettlebell correctly and maintain proper form during your workouts for optimal safety. 

Are there any exercises I shouldn’t do with adjustable kettlebells? 

While adjustable kettlebells are versatile and can be used for many exercises, they may not be ideal for high-speed transitions between different weights during a workout.  

With adjustable kettlebells, you can elevate your training and save space in your workout area. To dive deeper into the benefits and considerations of our adjustable kettlebells for sale, check out our blog for an in-depth look at their pros, cons, and who they are ideal for.  

Kettlebell Weight

  • 12-20.5 KG Adjustable Kettlebell
  • 12-32 KG Adjustable Kettlebell

Colour

Single or Pair

  • Single
  • Pair (Save 10%)
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