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Space-Saving Adjustable Kettlebell: 8-in-1 Weight, 5-40 lbs
Why We Recommend It
Stop tripping over six kettlebells just to get a decent workout. The Bowflex SelectTech 840 is for anyone tired of sacrificing floor space or workout variety. It replaces six individual kettlebells (8 to 40 lbs) with a single dial-adjustable unit — but the weight increments aren't as granular as traditional sets.
What Makes It Stand Out
Turn one dial, get six weights
Instead of bending down to grab a different kettlebell, you just rotate the dial — your set continues without breaking rhythm.
Frees up floor space instantly
One unit replaces six kettlebells, meaning the corner of your living room or garage can finally hold something else.
Grows with your strength
Start at 8 lbs for goblet squats and work up to 40 lbs for heavy swings — no need to buy a second set for months.
Pros & Cons
✓ What We Love
- Space-saving design replaces six kettlebells
- Quick weight changes between exercises without putting the bell down
- Smooth dial mechanism with audible lock at each weight
- Includes 2-month free JRNY membership with form-tracking
○ Worth Knowing
- Handle is too narrow for comfortable two-handed swings
- Weight increments are fixed (8, 12, 20, 25, 35, 40) — no fine-tuning between those steps
- Dial mechanism can feel slightly stiff when new, and may loosen over time
Who Might Want to Skip
How People Love Using It
How It Stacks Up vs The Competition
The BowFlex SelectTech 840 Adjustable Kettlebell offers quick weight changes from 8 to 40 lbs, ideal for home gyms. Compare with other adjustable kettlebells and dumbbells.
| Feature | This Product | Competitor A | Competitor B |
|---|---|---|---|
| Best For | ✓ Best Quick weight changes | Budget-friendly kettlebell | Versatile dumbbell set |
| Weight Range | ✓ Best 8-40 lbs | 5-40 lbs | 5-40 lbs |
| Price | $129.98 | $39.99 | ✓ Best $29.99 |
| Material | Steel with plastic base | ✓ Best Cast iron | Steel with foam grip |
| Space Saving | ✓ Best Replaces multiple bells | Replaces multiple bells | Replaces multiple dumbbells |
Is This Right for You?
At a Glance
| Brand | Bowflex |
|---|---|
| ASIN / SKU | B07X64MXBS |
| Price | $129.98 |
| Amazon Rating | 4.8 ★ (7,646 reviews) |
| Material | Steel and plastic housing |
| Dimensions | Approximately 10 x 8 x 8 inches |
| Weight | 8 to 40 lbs (adjustable) |
| Color / Options | Black/gray |
| Weight Options | 8, 12, 20, 25, 35, 40 lbs |
| Warranty | 2 years |
Real Amazon Reviews
Ready to get yours? ✨
Prices on Amazon move often. This was $129.98 when we last checked.
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