In-depth review
Bells of Steel Competition Kettlebell Review (2027): One Size, Every Weight
Full research review of the Bells of Steel competition kettlebell: uniform steel shell, 33 mm handle, window clearance, and who uniform sizing actually helps.
Bells of Steel Competition Kettlebell
Steel competition bell with a uniform shell and the 33 mm handle standard.
- Steel competition shell, hollow core design
- Construction
- 33 mm (competition standard)
- Handle diameter
- Kg primary, color bands by weight
- Markings
Our verdict
Competition bells solve a problem most casual buyers do not have, and solve it completely. Every Bells of Steel competition bell shares the same shell and the same 33 mm handle, so the clean you learn at 16 kg is mechanically the clean you perform at 28 kg. The bare steel handle is exactly what chalk and sport technique expect. The price per bell and the overkill factor for swing only training are real, and the review below does not hide either. For sport lifters and technique focused home gyms, this is the correct tool.
What we like
- Same 210 mm shell diameter at every weight, so technique never changes as you progress
- 33 mm handle follows the competition standard
- Bare steel handle takes chalk exactly the way sport lifters expect
What to watch out for
- Steel shell costs more than cast iron at the same weight
- Bare handle needs basic rust care in humid garages
Who it is for
Sport style lifters and technique driven trainers working cleans, snatches, and long sets in the rack.
Why uniform size changes training
With cast iron, every weight jump also changes bell diameter, window, and rack contact. With a competition shell around 210 mm at every weight, only the load changes. Owners moving up describe progressions feeling like pure strength gains rather than relearning, which is the entire argument for the format.
The 33 mm bare steel handle
Thirty three millimeters is the competition standard for a reason: thin enough for endurance grip in long sets, substantial enough for control. Bare steel takes chalk predictably and needs a wipe down routine in damp garages to stay rust free, a small maintenance tax owners accept knowingly.
Window and long set comfort
The competition window is shaped for extended rack holds, with clearance that keeps the handle off the wrist. For high rep snatch work the handle finish and window together are why sport lifters will not train on coated cast iron once they have tried steel.
Key specifications
- Construction
- Steel competition shell, hollow core design
- Handle diameter
- 33 mm (competition standard)
- Markings
- Kg primary, color bands by weight
- Weight range
- 8 to 32 kg range across the line (sold as singles)
- Window
- Competition window, uniform shell about 210 mm diameter
What owners report
Commonly praised
- Consistent size makes moving up in weight feel seamless
- Handle finish praised by chalk users
- Window clearance suits long sets in the rack
Common complaints
- Overkill for casual swing only training, by owners own admission
- Heavier bells are a significant single purchase
Recurring themes from owner reviews on retailers and forums, summarised by our editors. Updated October 2026.
Sources: Bells of Steel competition kettlebell documentation, Amazon listing specifications
Also consider
Kettlebell Kings Cast Iron Kettlebell
Single-cast powder coat bell with color bands and a trusted handle finish.
- Construction: Single-cast iron, powder coat finish
- Handle diameter: 33 mm on most mid and heavy bells (varies by weight)
Sources: Kettlebell Kings cast iron product documentation, Amazon listing specifications
Check price on Amazonor add to your Amazon cartChoose Kettlebell Kings for general strength training where uniform sizing adds cost without adding benefit to your program. Read our Kettlebell Kings Cast Iron Kettlebell review
REP Fitness Kettlebell
Matte powder coat bell with dual markings and a well shaped window.
- Construction: Cast iron, matte powder coat
- Handle diameter: About 33 to 34 mm on mid weights (varies by weight)
Sources: REP Fitness kettlebell product documentation, Amazon listing specifications
Check price on Amazonor add to your Amazon cartChoose REP to build a cheaper traditional run covering the same movements for non sport goals. Read our REP Fitness Kettlebell review
Research-based assessment: manufacturer specifications and documentation, cross-checked against retailer listings and recurring themes in published owner feedback. We do not claim hands-on testing we have not performed.
FAQ
Questions, answered straight
Are competition bells filled or hollow?
Designs vary by maker and weight; this line uses a steel shell construction where lighter bells have more internal void. What matters in use is the uniform outside, which is guaranteed by the format.
Can beginners use a competition bell?
Yes, and the consistent size can help learning. The barrier is cost, not usability. A beginner certain about kettlebell training long term is well served starting here.