Bowflex SelectTech 552 vs Flybird Adjustable Dumbbells
Bowflex SelectTech 552 vs Flybird Adjustable Dumbbells
6-Month Head-to-Head Showdown on Amazon’s Two Best-Selling Pairs in 2025 homegymstarter.com
I did something stupid in July 2025: I bought both the Bowflex 552 and the Flybird 55-lb adjustable dumbbells on the same Prime Day order. Total damage: $368 shipped.
For the last six months I’ve rotated them every single workout:
- Monday/Wednesday/Friday = Bowflex
- Tuesday/Thursday/Saturday = Flybird
- Sunday = whichever one I felt like punishing that week
Here’s exactly what survived, what broke, and which one I sold on Facebook Marketplace last week.
The Contenders (December 2025 Amazon Prices)
| Dumbbell | Current Price (with coupon) | Weight Range | Adjustment Style | Length at Max Weight | My Purchase Date |
|---|---|---|---|---|---|
| Bowflex SelectTech 552 | $219 (was $199 on Prime) | 5–52.5 lbs | Dial | 15.5″ | July 14, 2025 |
| Flybird Adjustable | $189 (dropped to $129 w/ coupon) | 5–55 lbs | Twist handle | 14.5″ | July 14, 2025 |
Both shipped in 36 hours. Both arrived undamaged.
Month-by-Month Beatdown Log
Month 1 – The Honeymoon Bowflex felt premium out of the box. The dial clicks like a luxury watch. Flybird felt… cheap. The plastic smelled like a dollar store. But after the first workout I noticed Flybird changes weight faster (2 seconds vs 4–5 for Bowflex when switching both handles).
Month 2 – First Real Test I started doing drop sets: 50 → 40 → 30 → 20 → 10 lb curls, 5 drops per arm, 4 sets. Bowflex: smooth sailing. Flybird: plates started shifting 1–2 mm sideways when I got sloppy with the twist. Never came off, but you could hear a tiny rattle.
Month 3 – The Accident August 2025. 5 a.m. workout. Kid runs into garage. I panic-dropped 45-lb Bowflex from shoulder height onto rubber mats. Result: tiny scuff on plastic end cap. Still 100% functional. Two weeks later same thing with Flybird at 50 lbs. Result: one plastic spacer cracked clean in half. Still held together, but I could see the crack every time I changed weight.
Month 4 – Heavy Press Day Dumbbell bench: worked up to 52.5 × 12 on Bowflex, 55 × 10 on Flybird. Bowflex: zero flex, plates locked tight. Flybird: handle started flexing slightly at 55 lbs. Felt like the internal rod was bending. Scared me enough to stop at 10 reps.
Month 5 – Noise Wars My gym is directly under my daughter’s bedroom. Bowflex when racked: barely audible “thunk.” Flybird when racked: loud plastic CLACK every single rep. Woke her up twice. Had to move Flybird sessions to afternoons.
Month 6 – The Final Straw Thanksgiving week. Did 100-rep goblet squats for time with 50 lbs. Bowflex: finished in 4:38. Zero issues. Flybird: at rep 67 one of the 5-lb plates popped completely off mid-squat. Landed on my foot (thank God for shoes). That was the day I listed the Flybird on Marketplace for $100 and it sold in 3 hours.
Side-by-Side Comparison Table (After 6 Months of Abuse)
| Category | Bowflex 552 | Flybird 55 lb | Winner |
|---|---|---|---|
| Adjustment speed | 4–5 seconds both hands | 2 seconds both hands | Flybird |
| Durability (drops) | 200+ drops – only scuffs | 50+ drops – one cracked spacer | Bowflex |
| Noise when racking | Whisper quiet | Loud plastic clack | Bowflex |
| Handle comfort | Ergonomic, slight taper | Fatter, straight | Bowflex |
| Max weight stability | Rock solid at 52.5 | Flexes at 55 | Bowflex |
| Light weight increments | 2.5 lbs up to 25 lbs | 5 lbs only | Bowflex |
| Length at max weight | 15.5″ (noticeable on bench) | 14.5″ (barely noticeable) | Flybird |
| Current Amazon price | $219 | $149 | Flybird |
| Resale value (local) | Sold used pair for $180 | Sold used pair for $100 | Bowflex |
The Verdict – December 2025
If you train hard, drop weights, or have kids/pets running around: Buy the Bowflex 552 right now and never look back → [AMAZON AFFILIATE LINK HERE]
If you’re super careful, live in an apartment where every second matters, and will never go above 50 lbs: Flybird is fine and saves you $70 → (Buy now on Amazon)
Me? I kept the Bowflex until I learned about the PowerBlock EXP.. The Flybird is now in some college kid’s dorm room.
Grab the Bowflex while Amazon still has the deal live → (Buy now on Amazon)
Disclosure: This site contains affiliate links. If you buy through one, I may earn a commission at no extra cost to you. As an Amazon Associate I earn from qualifying purchases. All opinions are 100% my own.
