Best Kettlebells · head-to-head

Bells of Steel Competition Kettlebell vs CAP Barbell Cast Iron Kettlebell

A sourced, side-by-side comparison. CAP Barbell Cast Iron Kettlebell is cheaper at $39.97. Every spec and price links to its source.

Which is better: the Bells of Steel Competition Kettlebell or CAP Barbell Cast Iron Kettlebell?

On the specs we track, they're closely matched. The CAP Barbell Cast Iron Kettlebell is the cheaper at $39.97.

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Full spec sheet

marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.

Spec Bells of Steel Competition Kettlebell CAP Barbell Cast Iron Kettlebell
US price $138.99 $39.97
BrandBells of SteelCAP Barbell
Released
Weight range (lb) 9-106 10-80
Material steel-competition cast-iron
Coating powder-coat
Handle diameter (mm) 35
Adjustable No No
Weight increment (lb)
Competition standard No No
Flat base Yes Yes
Single cast construction Yes Yes
Warranty years 100

Sources — Bells of Steel Competition Kettlebell: bellsofsteel.us (verified 2026-07-13). CAP Barbell Cast Iron Kettlebell: capbarbell.com (verified 2026-07-13).

What's the difference between the Bells of Steel Competition Kettlebell and CAP Barbell Cast Iron Kettlebell?

Where the two actually differ on the specs we track (2 of 10). Matching specs are omitted.

  • Weight range (lb): Bells of Steel Competition Kettlebell 9-106 vs CAP Barbell Cast Iron Kettlebell 10-80
  • Material: Bells of Steel Competition Kettlebell steel-competition vs CAP Barbell Cast Iron Kettlebell cast-iron

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