Ironmaster
Ironmaster Quick-Lock Adjustable Kettlebell
$89Cheaper
Best Kettlebells · head-to-head
Ironmaster Quick-Lock Adjustable Kettlebell vs Bowflex SelectTech 840 Adjustable Kettlebell
A sourced, side-by-side comparison. Ironmaster Quick-Lock Adjustable Kettlebell is cheaper at $89. Every spec and price links to its source.
Which is better: the Ironmaster Quick-Lock Adjustable Kettlebell or Bowflex SelectTech 840 Adjustable Kettlebell?
The Ironmaster Quick-Lock Adjustable Kettlebell wins 1 of the 1 specs we compare head to head; the other wins 0. The Ironmaster Quick-Lock Adjustable Kettlebell is the cheaper at $89. The Ironmaster Quick-Lock Adjustable Kettlebell both leads on specs and costs less — the straightforward pick.
See Ironmaster Quick-Lock Adjustable 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 | Ironmaster Quick-Lock Adjustable Kettlebell |  Bowflex SelectTech 840 Adjustable Kettlebell |
|---|---|---|
| US price | $89 | $149 |
| Brand | Ironmaster | Bowflex |
| Released | — | — |
| Weight range (lb) | 22.5-80 | 8-40 |
| Material | adjustable | adjustable |
| Coating | — | — |
| Handle diameter (mm) | — | — |
| Adjustable | Yes | Yes |
| Weight increment (lb) | 2.5 | 4 |
| Competition standard | No | No |
| Flat base | — | — |
| Single cast construction | No | No |
| Warranty years | 100 | 2 |
Sources — Ironmaster Quick-Lock Adjustable Kettlebell: ironmaster.com (verified 2026-07-13). Bowflex SelectTech 840 Adjustable Kettlebell: bowflex.com (verified 2026-07-13).
What's the difference between the Ironmaster Quick-Lock Adjustable Kettlebell and Bowflex SelectTech 840 Adjustable Kettlebell?
Where the two actually differ on the specs we track (3 of 10). Matching specs are omitted.
- Weight range (lb): Ironmaster Quick-Lock Adjustable Kettlebell 22.5-80 vs Bowflex SelectTech 840 Adjustable Kettlebell 8-40
- Weight increment (lb): Ironmaster Quick-Lock Adjustable Kettlebell 2.5 vs Bowflex SelectTech 840 Adjustable Kettlebell 4
- Warranty years: Ironmaster Quick-Lock Adjustable Kettlebell 100 vs Bowflex SelectTech 840 Adjustable Kettlebell 2