PowerBlock Pro 50 Adjustable Dumbbells vs BowFlex Results Series 552 SelectTech Dumbbells
PowerBlock Pro 50 Adjustable Dumbbells (#2, best premium) vs BowFlex Results Series 552 SelectTech Dumbbells (#5, best budget): in our Adjustable Dumbbells scoring the PowerBlock Pro 50 Adjustable Dumbbells totals 8.3/10 and the BowFlex Results Series 552 SelectTech Dumbbells 6.7/10.
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TopsFive comparison scores
Side by side
| PowerBlock Pro 50 Adjustable Dumbbells | BowFlex Results Series 552 SelectTech Dumbbells | |
|---|---|---|
| Weight Range | 5-50 lbs each | 5-52.5 lbs each |
| Increments | 2.5 & 5 lbs | 2.5 lbs (5-25), then 5 lbs (25-52.5) |
| Dimensions | 13" x 7" x 7.25" | 16.9" x 8.3" x 9" |
| Adjustment | Magnetic selector pin | Dial system + trays |
| Material | Urethane-coated steel | — |
| Warranty | — | 2-year parts |
| Price | Check price → | Check price → |
How they differ in real use
Built from our adjustable dumbbells scoring, each product's published specifications, and verified owner feedback — not hands-on testing.
Both the PowerBlock Pro 50 Adjustable Dumbbells and the BowFlex Results Series 552 SelectTech Dumbbells made our Top 5 Adjustable Dumbbells, at #2 (best premium) and #5 (best budget). Premium urethane-coated steel with contoured TPR grip and fine 2.5 lb increments. Same proven PowerBlock selector pin in a refined package with 5-year warranty. 15 weight settings with 2.5 lb steps early on. Most recognized brand, but bulky constant-length design and a 2025 CPSC recall on older 552/1090 models warrant caution.
We score adjustable dumbbells on Motion Quality (35%), Build Quality (25%), Features (20%), Footprint (10%) and Value (10%). On that basis the PowerBlock Pro 50 Adjustable Dumbbells totals 8.3 out of 10 and the BowFlex Results Series 552 SelectTech Dumbbells 6.7. The widest gap is Build Quality, where the PowerBlock Pro 50 Adjustable Dumbbells scores 9 against 6 for the BowFlex Results Series 552 SelectTech Dumbbells: materials, mechanism durability, warranty. Motion Quality also separates them: 8 for the PowerBlock Pro 50 Adjustable Dumbbells versus 7 for the BowFlex Results Series 552 SelectTech Dumbbells.
On paper, the specifications that actually differ: Weight Range: 5-50 lbs each on the PowerBlock Pro 50 Adjustable Dumbbells versus 5-52.5 lbs each on the BowFlex Results Series 552 SelectTech Dumbbells; Increments: 2.5 & 5 lbs on the PowerBlock Pro 50 Adjustable Dumbbells versus 2.5 lbs (5-25), then 5 lbs (25-52.5) on the BowFlex Results Series 552 SelectTech Dumbbells; Dimensions: 13" x 7" x 7.25" on the PowerBlock Pro 50 Adjustable Dumbbells versus 16.9" x 8.3" x 9" on the BowFlex Results Series 552 SelectTech Dumbbells; Adjustment: Magnetic selector pin on the PowerBlock Pro 50 Adjustable Dumbbells versus Dial system + trays on the BowFlex Results Series 552 SelectTech Dumbbells.
Check current pricing at the merchant links below. Owners praise the PowerBlock Pro 50 Adjustable Dumbbells for urethane-coated steel (premium durability) and contoured TPR grip; the most common complaint is not expandable beyond 50 lbs. Owners praise the BowFlex Results Series 552 SelectTech Dumbbells for 15 weight settings (2.5 lb steps early) and familiar dial adjustment; the most common complaint is very bulky (16.9" x 8.3" x 9").
PowerBlock Pro 50 Adjustable Dumbbells
- Urethane-coated steel (premium durability)
- Contoured TPR grip
- 2.5 lb micro-increments throughout
- 5-year residential warranty
- Not expandable beyond 50 lbs
- Premium price ($549)
- Caged design limits some movements
BowFlex Results Series 552 SelectTech Dumbbells
- 15 weight settings (2.5 lb steps early)
- Familiar dial adjustment
- Includes trays
- App membership trial bundled
- Very bulky (16.9" x 8.3" x 9")
- Constant length interferes with some exercises
- 2025 CPSC recall on older 552/1090 models
Which should you buy?
The PowerBlock Pro 50 Adjustable Dumbbells is the better fit for premium material seekers and those wanting fine increments; it is the higher-scoring pick here, chiefly for Build Quality and Motion Quality. The BowFlex Results Series 552 SelectTech Dumbbells is the better fit for those wanting fine early increments and beginners wanting recognizable brand. The PowerBlock Pro 50 Adjustable Dumbbells is a poor fit for those needing 50+ lbs per hand; the BowFlex Results Series 552 SelectTech Dumbbells is a poor fit for compact space needs.
Choose the PowerBlock Pro 50 Adjustable Dumbbells if
- Premium material seekers
- Those wanting fine increments
- Compact home gym setups
Skip it if
- Those needing 50+ lbs per hand
- Budget shoppers
Choose the BowFlex Results Series 552 SelectTech Dumbbells if
- Those wanting fine early increments
- Beginners wanting recognizable brand
- Those preferring dial adjustment
Skip it if
- Compact space needs
- Drop-friendly use
Common questions
Is the PowerBlock Pro 50 Adjustable Dumbbells better than the BowFlex Results Series 552 SelectTech Dumbbells?
In our Adjustable Dumbbells ranking the PowerBlock Pro 50 Adjustable Dumbbells scores higher overall, 8.3 to 6.7, with the biggest advantage in Build Quality. The BowFlex Results Series 552 SelectTech Dumbbells does not out-score it on any criterion we weigh.
What is the main difference between the PowerBlock Pro 50 Adjustable Dumbbells and the BowFlex Results Series 552 SelectTech Dumbbells?
The headline spec difference is Weight Range: 5-50 lbs each on the PowerBlock Pro 50 Adjustable Dumbbells versus 5-52.5 lbs each on the BowFlex Results Series 552 SelectTech Dumbbells. In use, the gap that matters most is Build Quality (9 vs 6 in our scoring): materials, mechanism durability, warranty.