Bells of Steel
Bells of Steel Competition Kettlebell
$138.99Cheaper
Best Kettlebells · head-to-head
Bells of Steel Competition Kettlebell vs Bowflex SelectTech 840 Adjustable Kettlebell
A sourced, side-by-side comparison. Bells of Steel Competition Kettlebell is cheaper at $138.99. Every spec and price links to its source.
Which is better: the Bells of Steel Competition Kettlebell or Bowflex SelectTech 840 Adjustable Kettlebell?
On the specs we track, they're closely matched. The Bells of Steel Competition Kettlebell is the cheaper at $138.99.
See Bells of Steel Competition Kettlebell on Amazon See Bowflex SelectTech 840 Adjustable Kettlebell on Amazon
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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 |  Bowflex SelectTech 840 Adjustable Kettlebell |
|---|---|---|
| US price | $138.99 | $149 |
| Brand | Bells of Steel | Bowflex |
| Released | — | — |
| Weight range (lb) | 9-106 | 8-40 |
| Material | steel-competition | adjustable |
| Coating | powder-coat | — |
| Handle diameter (mm) | 35 | — |
| Adjustable | No | Yes |
| Weight increment (lb) | — | 4 |
| Competition standard | No | No |
| Flat base | Yes | — |
| Single cast construction | Yes | No |
| Warranty years | 100 | 2 |
Sources — Bells of Steel Competition Kettlebell: bellsofsteel.us (verified 2026-07-13). Bowflex SelectTech 840 Adjustable Kettlebell: bowflex.com (verified 2026-07-13).
What's the difference between the Bells of Steel Competition Kettlebell and Bowflex SelectTech 840 Adjustable Kettlebell?
Where the two actually differ on the specs we track (5 of 10). Matching specs are omitted.
- Weight range (lb): Bells of Steel Competition Kettlebell 9-106 vs Bowflex SelectTech 840 Adjustable Kettlebell 8-40
- Material: Bells of Steel Competition Kettlebell steel-competition vs Bowflex SelectTech 840 Adjustable Kettlebell adjustable
- Adjustable: Bells of Steel Competition Kettlebell false vs Bowflex SelectTech 840 Adjustable Kettlebell true
- Single cast construction: Bells of Steel Competition Kettlebell true vs Bowflex SelectTech 840 Adjustable Kettlebell false
- Warranty years: Bells of Steel Competition Kettlebell 100 vs Bowflex SelectTech 840 Adjustable Kettlebell 2