BowFlex 840 Adj. Kettlebell
Top PickWhat We Like
- Replaces up to six individual kettlebells in one compact unit.
- Turn-dial adjustment allows fast weight changes between sets without handling loose plates.
- Weight range from 8 to 40 lbs covers most kettlebell exercises for intermediate strength training.
Worth Noting
- Premium price - costs more than a single fixed kettlebell of equivalent weight.
- Dial mechanism's long-term reliability under frequent use has limited long-term feedback - a concern for daily heavy training.
- Storage
- None
- Weight Range
- 8-40 lbs
- Material / Coating
- —
- Adjustability vs Fixed
- Adjustable
Read the full review
The BowFlex SelectTech 840 replaces up to six individual kettlebells in one compact unit via a turn-dial adjustment that lets you change weight in seconds, from 8 to 40 lbs. This is a genuine space-saving solution for home gyms where every square foot counts.
The dial mechanism clicks into each weight setting with a positive detent, and the rubberized handle stays secure during dynamic swings. Weight changes take under five seconds, keeping workout flow uninterrupted. The compact shape stores easily on a shelf or corner.
This adjustable kettlebell suits home gym owners who prioritize compactness over the solid feel of a fixed kettlebell. The premium price reflects the engineering of the dial system, but its long-term durability under heavy daily use has limited long-term evidence - a consideration for frequent lifters. Traditional kettlebell users or those needing weights above 40 lbs may prefer a fixed-weight set.
Tip: Always turn the dial fully until it clicks into the desired weight before lifting to prevent unexpected load shifts.
Bottom line: A smart pick for anyone with limited floor space who wants one kettlebell covering a useful weight range - as long as they're comfortable with the premium price and treat the dial mechanism with care.