Bottom line: The BowFlex Results Series 552 is $379.98 and the Nuobell 580 is $745. Before anything else, know this: in June 2025 the CPSC recalled roughly 3.8 million older BowFlex 552 and 1090 dumbbells after 111 reported injuries from weight plates dislodging mid-lift. The Results Series is the redesigned replacement rather than the recalled model, and if you own an older pair you should check the serial number before using them again. Prices checked 31 August 2026.
Check BowFlex Results Price → Check Nuobell Price →
The Recall, Because It Should Come First
On 5 June 2025, Johnson Health Tech Trading voluntarily recalled the BowFlex 552 and 1090 adjustable dumbbells in cooperation with the Consumer Product Safety Commission. The hazard was weight plates dislodging from the handle during use.
The scale is unusual. Roughly 3,844,200 units sold between 2004 and May 2025. Around 350 reports of plates dislodging, and 111 reported injuries including concussions, abrasions, broken toes and contusions. Consumer Reports noted complaints had been accumulating in the CPSC database for years beforehand, including a 2021 report of a plate falling on a user’s eye.
If you own a pair bought before May 2025, the model and serial number are on a sticker under the plastic tray. Check it against the official recall list, stop using them if they match, and claim the refund or replacement. This is not a reason to distrust adjustable dumbbells generally. It is a reason to check the specific pair in your house.
The Numbers
| BowFlex Results 552 | Nuobell 580 | |
|---|---|---|
| Price (pair) | $379.98 | $745.00 |
| Weight range | 5-52.5 lb | 5-80 lb |
| Increments | 2.5 lb at low end | 5 lb |
| Adjustment | Twin dials | Twist the handle |
| Replaces | 15 weights | 16 pairs |
| Handle | Ergonomic non-slip | Knurled aluminium |
Two rows carry the decision. The Nuobell goes to 80lb per hand against 52.5lb, and it adjusts by twisting the handle itself rather than turning dials on the cradle. The BowFlex is $365 cheaper and offers finer 2.5lb jumps at the light end, which matters more than it sounds for pressing movements where a 5lb step is a big ask.
The Ceiling Question
The weight range is the thing most people get wrong, in both directions.
52.5lb per hand is a serious dumbbell. For most people it covers presses, rows, lunges, curls and virtually every accessory movement for years. The lifters who genuinely outgrow it are usually doing heavy dumbbell rows or heavy goblet work, and even then the ceiling arrives slowly.
But if you do hit it, you cannot add weight. That is the asymmetry worth thinking about: buying too much capacity costs $365 once, while buying too little means replacing the set entirely. The Nuobell at 80lb per hand is a ceiling almost nobody training at home will reach.
A useful test costs nothing. Whatever dumbbell weight you use for a set of eight on a bench press right now, that number tells you where you are. If it is under 40lb, the 52.5lb ceiling gives you room to roughly double. If you are already pressing 50s for reps, you are shopping for the 80lb set.
Why Adjustables Break, and What to Look For
The recall is a specific instance of a general problem. Adjustable dumbbells concentrate a great deal of load into a locking mechanism, and that mechanism is the entire product.
A fixed dumbbell is a single piece of metal with nothing to fail. An adjustable holds fifteen or more plates on a handle by means of a latch, and every rep applies force to that latch. This is why the failure mode is always the same across brands: a plate coming loose. It is also why the two things worth paying for are the locking mechanism and the manufacturer’s willingness to stand behind it.
Practically, that means three habits. Always confirm the plates are seated before lifting, because a partially engaged selector is the most common user-side cause of a drop. Always return the dumbbell to its cradle rather than the floor, since dropping is what damages the mechanism. And never adjust while the weight is off the tray.
None of that is unique to either brand here. It applies to every adjustable dumbbell ever made, and it is the trade you accept for replacing fifteen pairs with one. Our home gym equipment guide covers where adjustables fit against fixed weights and kettlebells.
The Shape Problem
Neither of these handles like a real dumbbell, and that is worth knowing before you spend $745.
Adjustables are long. The plates sit in a row along the handle, so the whole unit extends well past your hand in both directions even at light settings. That makes some movements awkward. Any exercise where the dumbbells come close together at the top of the rep, such as a chest press, can have the ends clashing. Deep goblet squats and anything near your torso feels bulkier than the equivalent fixed weight.
The Nuobell is generally regarded as the more compact of the two designs, because it keeps a rounder profile and only carries the plates you have selected. The BowFlex carries its full cradle profile regardless of setting. If space around your body during lifts matters to you, that is a real point in favour of the more expensive set, and it is a genuine design difference rather than a marketing one.
This is also the argument for owning a couple of fixed dumbbells alongside a set, particularly at a light weight you use constantly for warm-ups and lateral raises. Ten dollars of fixed weight removes most of the daily friction of adjusting.
How We Evaluate
We do not own either set and we will not imply we do. Specifications and prices come from the manufacturers’ own Amazon listings, checked on 31 August 2026, including the BowFlex Results Series 552’s 5 to 52.5 pound range, dial adjustment and reinforced metal plates and locking system, and the Nuobell 580’s 5 to 80 pound range, twist-handle adjustment and knurled aluminium handles. Recall details come from the Consumer Product Safety Commission notice of 5 June 2025 and contemporaneous reporting by Consumer Reports, including the unit count of approximately 3,844,200, around 350 dislodgement reports and 111 reported injuries. Recommendations are our judgment, labelled as such.
Who Should Buy Which
Buy the BowFlex Results Series 552 at $379.98 if 52.5lb per hand covers your lifts, which for most people it does for years. It is $365 cheaper, offers finer increments at the light end, and it is the post-recall redesign with a reinforced locking system rather than the model that was recalled. This is our pick for most home lifters.
Buy the Nuobell 580 at $745 if you already press near 50lb per hand, if you want the more compact profile for pressing movements, or if you prefer twisting the handle to turning dials. The 80lb ceiling is one almost nobody training at home will reach.
Buy fixed dumbbells instead if you only need two or three weights. A pair of fixed 25s and 40s costs a fraction of either set, has nothing to fail, and never needs adjusting between sets.
Check your existing pair first if you already own BowFlex 552s or 1090s bought before May 2025. The serial number is under the tray. Our weight bench guide and pull-up bar guide cover what else a home setup needs, and our recovery gear guide covers the other side of training.
Check BowFlex Results Price → Check Nuobell Price →
FAQ
Were BowFlex adjustable dumbbells recalled?
Yes. In June 2025 the CPSC and Johnson Health Tech Trading recalled roughly 3.8 million BowFlex 552 and 1090 dumbbells sold between 2004 and May 2025, after around 350 reports of weight plates dislodging and 111 reported injuries. The current Results Series is the redesigned replacement.
Is the Nuobell worth twice the price?
Only if you need the 80lb ceiling or the more compact profile. Both sets do the same job at weights under 52.5lb, and the BowFlex offers finer increments at the light end.
Is 52.5lb enough for adjustable dumbbells?
For most home lifters, yes, and for several years. Check what you currently press for a set of eight. If it is under 40lb, a 52.5lb ceiling leaves room to roughly double your working weight.
Do adjustable dumbbells break easily?
The locking mechanism is the failure point on every design, which is why the recall hazard was plates dislodging. Seat the plates fully before each set, return the dumbbells to the cradle rather than the floor, and never adjust off the tray.
Are adjustable dumbbells awkward to use?
Somewhat. They are longer than fixed dumbbells, so the ends can clash on chest presses and feel bulky on movements close to the torso. The Nuobell’s rounder profile handles this better than dial-based designs.