PowerBlock Pro 100 Adjustable Dumbbell (5–100 lb, Single)
🔥 #8 in Adjustable Dumbbells · New Best adjustable dumbbell for serious lifters seeking maximum range
PowerBlock Pro 100 Adjustable Dumbbell (5–100 lb, Single)
POWERBLOCK 3.6
#8
in Adjustable Dumbbells
$599 →
As of Jul 13, 2026
AI-estimated. See how we score. How we score Affiliate link — we may earn a commission
01 / Spec
Top features
Adjustment MechanismMagnetic polypropylene selector pin
Weight Range5–100 lb (single unit)
Increment Step2.5 / 5 lb
The PowerBlock Pro 100 is a single adjustable dumbbell spanning 5–100 lb with 2.5–5 lb increment steps, using a magnetic polypropylene selector pin for quick weight changes. It ships with the base unit (5–40 lb) plus three expansion kits to reach the maximum. The dumbbell features a knurled grip, steel-and-polymer construction, and compact 19.2" L × 7.6" W × 7.7" H footprint when racked. Designed for serious lifters and small-space home gyms, it excels at progressive overload without requiring a full dumbbell rack. The expansion-kit system allows gradual growth, though the initial $599 investment is steep. Best suited for intermediate-to-advanced strength trainers committed to long-term adjustable-weight training.
02 / Signals
Why it's hot
Premium adjustable dumbbell goes to 100 lb with easy pin-select.
- Value for money 64
- Review rating & velocity 96
- Community sentiment 99
- Brand reputation 100
- Search heat 91
- Est. return & defect rate 100
03 / Verdict
Pros & cons
Pros
- Wide weight range (5–100 lb) replaces entire rack
- Fast magnetic pin adjustment with no dial jamming
- Proven PowerBlock durability and brand trust
- Fine 2.5–5 lb increment steps for progressive overload
- Compact storage footprint
- Expandable modular system
Cons
- High $599 price point; premium cost per pound
- Bulky footprint even at light weights (19.2 in long)
- Expansion kits sold separately, adding cost
- Heavier than lighter-range competitors at max weight
- Plastic magnetic pin may wear over years
Adjustment MechanismMagnetic polypropylene selector pin
Weight Range5–100 lb (single unit)
Increment Step2.5 / 5 lb
Sold AsSingle dumbbell
Plate MaterialSteel plates, polymer housing
Handle GripKnurled grip
Included Tray Or StandNone included
Dimensions Racked19.2" L × 7.6" W × 7.7" H
Weight At 100 Lb Max~100 lb
WarrantyManufacturer limited warranty
05 / Your take
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05 / Compare
Compare the best alternative
One useful head-to-head in Adjustable Dumbbells, with the rows most likely to separate the contenders.
Open full comparison → 
PowerBlock Sport 24 Adjustable Dumbbells (3–24 lb, Pair)
Weight Range (lb)
5–100 lb, 2.5–5 lb steps Widest range 3–24 lb, 3 lb steps
Build Durability
Steel plates, proven PowerBlock mechanism Steel plates, solid mechanism, clean record
06 / Rivals
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