# Bells of Steel Competition Kettlebell vs Bowflex SelectTech 840 Adjustable Kettlebell: specs and price compared

A sourced, side-by-side comparison of the Bells of Steel Competition Kettlebell (Bells of Steel) and Bowflex SelectTech 840 Adjustable Kettlebell (Bowflex) among kettlebells. Bells of Steel Competition Kettlebell is the cheaper of the two at $138.99.

## Side by side

| Spec | Bells of Steel Competition Kettlebell | Bowflex SelectTech 840 Adjustable Kettlebell |
| --- | --- | --- |
| US price | $138.99 | $149 |
| Brand | Bells of Steel | Bowflex |
| 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 |

## Key differences

- 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 No vs Bowflex SelectTech 840 Adjustable Kettlebell Yes
- Single cast construction: Bells of Steel Competition Kettlebell Yes vs Bowflex SelectTech 840 Adjustable Kettlebell No
- Warranty years: Bells of Steel Competition Kettlebell 100 vs Bowflex SelectTech 840 Adjustable Kettlebell 2

## Sources

- Bells of Steel Competition Kettlebell: https://bellsofsteel.us/products/competition-kettlebells (bellsofsteel.us, verified 2026-07-13)
- Bowflex SelectTech 840 Adjustable Kettlebell: https://www.bowflex.com/product/840-adjustable-kettlebell/100790.html (bowflex.com, verified 2026-07-13)

Canonical: https://frontdeskreview.com/gear/kettlebells/bells-of-steel-competition-kettlebell-vs-bowflex-selecttech-840-kettlebell/
Cite: Per The Front Desk Review, Bells of Steel Competition Kettlebell ($138.99) vs Bowflex SelectTech 840 Adjustable Kettlebell ($149) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/kettlebells/bells-of-steel-competition-kettlebell-vs-bowflex-selecttech-840-kettlebell/
License: CC BY 4.0.