FLYBIRD Adjustable Dumbbells: Specs, Limits and Who They Suit in 2026

FLYBIRD adjustable dumbbells sit at the budget end of the category. The brand makes two main sizes. One set goes to 25 lb per hand in 5 lb steps. The other goes to 55 lb per hand in 11 lb steps (FLYBIRD Fitness, Garage Gym Reviews). Both are twist-and-lift designs built for small rooms. This page sets out what each size does, where it falls short, and which set to pick if it does not fit your plan.

FLYBIRD adjustable dumbbells are a low-cost, compact twist-lock set with five weight settings per hand. The 55 lb pair suits general strength work in a small space. It is a weaker fit if you need small weight jumps or plan to lift past 55 lb.

How we picked the facts on FLYBIRD adjustable dumbbells

We read FLYBIRD's own product details and the Amazon listing for the DB2 set. We then compared them with named reviews from Garage Gym Reviews, Garage Gym Pro and jayshomegym.com. We did not test the dumbbells by hand. Each fact below names its source, so you can check the current details before you buy.

FLYBIRD adjustable dumbbells specs

25 lb model: 5, 10, 15, 20 and 25 lb per hand, in 5 lb steps (FLYBIRD Fitness).
55 lb model: 11, 22, 33, 44 and 55 lb per hand, in 11 lb steps (FLYBIRD Fitness).
Size, 55 lb model: 16.1 x 7.9 x 6.9 inches per dumbbell (Garage Gym Reviews).
Size, 25 lb model: about 14 x 7.9 x 6.7 inches, with a 14-inch handle (jayshomegym.com).
Plates: carbon steel with a nylon coat (FLYBIRD Fitness).
Handle: nylon-covered PP plastic with a non-slip texture, not knurled.
Storage: a stackable tray, with no assembly needed.
Warranty: 1 year, per Garage Gym Pro's review.

FLYBIRD DB2 Adjustable Dumbbell Set, 55 lb

Our verdict:

Best budget pick for a small space

Best for a first adjustable set for a closet, spare room or corner, where 55 lb per hand is enough.

View on Amazon

55 lb option with five weight settings
Storage box included
Non-slip handle

Keep in mind: the 11 lb jumps are coarse, and there is no kit to go past 55 lb.

Product details checked September 2026

Weight range and increments

The 25 lb model has five settings, 5 lb apart. The 55 lb model, FLYBIRD's more popular size, also has five settings. Its steps are 11 lb apart (FLYBIRD Fitness).

That step size matters for your program. Many sets at this level use 5 lb or 2.5 lb steps, so you can add load slowly. FLYBIRD's 55 lb set jumps 11 lb at a time. There is no setting between 33 and 44 lb. For curls and lateral raises, where small jumps matter, that gap is worth knowing about before you buy.

Size and footprint

Each 55 lb dumbbell measures 16.1 x 7.9 x 6.9 inches (Garage Gym Reviews). That is on the small side for a set that tops out at 55 lb. The pair ships in a stackable tray with no assembly (FLYBIRD Fitness). Two dumbbells take about one shelf slot in a closet, under a bench or in a garage corner.

The 25 lb model is smaller still. Jayshomegym.com lists it at about 14 x 7.9 x 6.7 inches per dumbbell. If a few inches of shelf depth matter, the 25 lb set saves real space. The cost is a lower ceiling.

Build: plates and handle

The plates are carbon steel with a nylon coat. The handle is a nylon-covered plastic grip with a textured surface, not knurled metal (FLYBIRD Fitness). A safety buckle keeps the plates from sliding during a lift. You can only change the weight while the dumbbell sits in its tray. Lifting it out locks the current setting.

That build differs from the cast iron and steel on mid-range and premium sets. The gap shows up in handle feel and long-term wear, not in the weight range. Our best adjustable dumbbells roundup covers those sturdier sets.

How the lock holds up

FLYBIRD's twist-lock favors speed over fine control. Jayshomegym.com says the change takes under a second once the dumbbell is back in its tray. You can't adjust it out of the tray. That is a safety feature, not a flaw. Garage Gym Pro's review notes an 8-part locking system that clamps the plates to the handle and works with one hand.

What FLYBIRD adjustable dumbbells do well

Small footprint for the weight. A 55 lb pair that fits in about one shelf slot is a real win in a spare room or apartment.

Fast changes. The twist-lock takes about a second in the tray, per jayshomegym.com. That keeps rest times short.

Simple to set up. The set arrives ready to use, with its own tray.

Plain choice of sizes. Two sizes make the pick easy. Match the model to your heaviest lift.

Where FLYBIRD adjustable dumbbells fall short

Coarse steps on the 55 lb set. The 11 lb jumps leave gaps. You can't go from 33 lb to 38 lb, for example.

The tray is the weak link. Garage Gym Pro found the dumbbells "feel incredibly sturdy," but the tray felt far less solid. Treat the tray as the part most likely to wear first.

Short warranty. Garage Gym Pro lists 1 year of cover. Many mid-range twist-handle sets offer more.

Not built for drops. Jayshomegym.com says the set held up to a drop of about 6 inches. It still warns against higher drops, since the lock and handle use plastic parts.

No way to expand. PowerBlock's Elite EXP and Ironmaster's Quick-Lock sell add-on kits. FLYBIRD does not. Jayshomegym.com flags this too. Once you reach 55 lb per hand, the next step is a second, heavier set.

FLYBIRD 25 lb vs 55 lb

The two models share the same handle and tray design. The difference is scale, not mechanism.

Range: 5 to 25 lb per hand, or 11 to 55 lb per hand.
Steps: 5 lb on the 25 lb set, 11 lb on the 55 lb set.
Size per dumbbell: about 14 x 7.9 x 6.7 inches (jayshomegym.com), or 16.1 x 7.9 x 6.9 inches (Garage Gym Reviews).
Warranty: 1 year on both (Garage Gym Pro).
Expansion kit: none on either.

Match the model to the heaviest lift you will really load. Don't just default to the bigger number. If 25 lb per hand covers your plan, the smaller body saves shelf space.

Care and checks before you buy

The plates lock with a mechanical system, not a screw collar. Keep the lock free of dust and grit. FLYBIRD's own instructions say to seat the dumbbell fully in its tray before you twist. If the twist feels loose, check that the dumbbell sits flush in the tray before you assume a defect.

If the set will live in a busy shared garage, protect it from knocks. The plastic parts in the lock are the more fragile piece, per jayshomegym.com's drop notes.

Who FLYBIRD adjustable dumbbells suit

Good fit: a first adjustable set for general strength work or higher-rep accessory work.
Good fit: a small room where footprint and a low entry cost matter most.
Less ideal: lifters who add weight in small steps for steady progress.
Less ideal: anyone who expects to lift past 55 lb per hand within a year or two.

Alternatives to FLYBIRD

If you need finer steps or a higher ceiling, look at a set with 2.5 or 5 lb jumps. Our home adjustable dumbbells roundup covers sets with a real expansion path. The best adjustable dumbbells roundup compares the main sets side by side. For a pin-select set in the same weight class, see our NordicTrack adjustable dumbbells review.

Our verdict on FLYBIRD adjustable dumbbells

FLYBIRD adjustable dumbbells are a fair budget pick for a small space and a first set. The 55 lb pair is compact and quick to change. Its coarse 11 lb steps, plastic handle, 1-year warranty and lack of an expansion kit mean it suits general fitness more than steady strength gains. If you need finer steps or more weight later, start with a heavier, more flexible set instead.

Questions people also ask

What weight increments does FLYBIRD use?

It depends on the model. The 25 lb set moves in 5 lb steps: 5, 10, 15, 20 and 25 lb. The 55 lb set moves in 11 lb jumps per hand: 11, 22, 33, 44 and 55 lb (FLYBIRD Fitness, Garage Gym Reviews). That is a coarser step than most mid-range adjustable dumbbells, which often move in 2.5 or 5 lb steps.

How much space does a FLYBIRD dumbbell take up?

Each dumbbell in the 55 lb set measures 16.1 x 7.9 x 6.9 inches (Garage Gym Reviews). It comes with a stackable storage tray, so the pair sits in about one shelf slot.

Is the FLYBIRD handle knurled like a barbell?

No. FLYBIRD uses a nylon-covered plastic (PP) handle with a textured, non-slip surface instead of metal knurling (FLYBIRD Fitness). It feels different from the knurled steel or aluminum handles on mid-range and premium sets.

How fast is the FLYBIRD adjustment?

Reviewers call it one of the quicker systems at this level. Jayshomegym.com describes a twist-lock that changes weight in under a second once the dumbbell sits in its tray. Garage Gym Pro's review notes an 8-part locking system that clamps the plates and works one-handed.

Does FLYBIRD offer a warranty, and can you drop the weights?

Garage Gym Pro's review lists a 1-year warranty. Neither FLYBIRD nor the reviews we checked call the dumbbells drop-rated. Jayshomegym.com notes the set survived a drop of about 6 inches in testing, but it flags the plastic parts in the handle and lock as a reason to avoid higher drops.