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#6 in Best Adjustable Dumbbells

PowerBlock Pro 100 Adjustable Dumbbell, Sold As A Single Unit 5-100 lb Dumbbell – Durable Steel Build, Innovative Workout…

POWERBLOCK · 2 more picks

Best for

Best premium

Amazon rating

★★★★★4.4(100)

Amazon aggregate, one input among many in the Verdict Score

Verdict scoreGreat
80/ 100

Based on 1 trusted source

Current price

$509.15

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Updated Jun 27, 2026 · 1 min read

PowerBlock Pro 100 Adjustable Dumbbell, Sold As A Single Unit 5-100 lb Dumbbell – Durable Steel Build, Innovative Workout…

Sources behind this verdict

10 reviewers weighted by source trust

Methodology →

The consensus

What reviewers found

Synthesized across the trust-weighted source mix below.

The PowerBlock Pro 100 EXP is positioned as the premium, top-of-range option, scaling from 5 to 100 lb in 2.5 lb increments. High-trust r/homegym owners describe the urethane and materials as making the dumbbells "feel premium and rock solid," praising the quick changes and the design, and another notes you don't have to return them to a cradle to change weight—useful for drop sets. Garagegymreviews.com confirms the heavy-duty positioning while noting that despite a compact design on paper, it "doesn't quite feel that way while in use." Durability is where the picture splits.

What reviewers liked

  • High-trust community describes a premium urethane, rock-solid build
  • Scales to 100 lb in 2.5 lb increments—the highest ceiling and finest steps here
  • Weight can be changed without returning to a cradle, convenient for drop sets

Where it falls short

  • High-trust community thread surfaces reports of the mechanism failing or losing smoothness
  • Square cage feels bulky in use despite compact specs, per a high-trust expert source
  • Expensive, with a modest 4.4 average across only ~100 reviews

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Across the reviews

Synthesis · not our verdict

The PowerBlock Pro 100 EXP is positioned as the premium, top-of-range option, scaling from 5 to 100 lb in 2.5 lb increments. High-trust r/homegym owners describe the urethane and materials as making the dumbbells "feel premium and rock solid," praising the quick changes and the design, and another notes you don't have to return them to a cradle to change weight—useful for drop sets. Garagegymreviews.com confirms the heavy-duty positioning while noting that despite a compact design on paper, it "doesn't quite feel that way while in use."

Durability is where the picture splits. The same high-trust r/homegym discussion that praises the build also surfaces reports that the mechanism fully stopped working for some users, and a few video reviewers said it didn't feel smooth after a few uses. The square cage can feel awkward, and at over $500 it's a significant investment with only about 100 Amazon reviews (4.4 average) to lean on. The trust-weighted verdict: a genuinely premium-feeling, high-ceiling dumbbell with strong enthusiast backing, but mixed reliability signals warrant caution.

Key specs

Source: Amazon listing
All-In-One Strength Training Solution
Adjustable in 2.5 or 5 lb adjustable weight increments, this PowerBlock dumbbell has a starting range of 5-40 pounds per hand can expand to 100 pounds with the included expansion kits.
Easy & Quick Adjustability
The convenient and compact dumbbell provides innovative strength training. Quickly adjust the dumbbell up or down to your desired weight with the secure magnetic polypropylene pin. The pin has a 500 lbs. max load.
Included With The Pro 100
Pro 100 Knurled Grip Dumbbells and Expansion Kit Stages 1, 2, and 3.
Long Lasting For Years Of Use
This dumbbell can be used with PowerBlock’s Straight or Curl Bars, Kettlebell Handle, and Stands (sold separately) to build your own gym. Dimensions are 19.2” L by 7.6” W by 7.7” H.
Add Weight In Increments
Increments of this workout weight includes 2.5 (adder weight), 5, 7.5, 10, 15, 17.5, 20, 25, 27.5, 30, 35, 37.5, 40 lbs. per hand. Stage one starts at 40 pounds with three expansion kits to get you to 60, 80, and 100 pounds.

What customers say

2 verified voices
Some users reported the mechanism fully stopped working, and a few youtube reviews mentioned it didn't feel smooth anymore after a few uses.
Trustedvia r/homegym
The urethane and materials used make the dumbbells feel premium and rock solid. And I absolutely love the design. These are quick to change, and ...
Trustedvia r/homegym

Trust tier reflects our editorial assessment of the source, not the individual quote. Hover for the rationale. See how we tier sources →

Video review

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NEW 100 LB PowerBlock Pro EXP Adjustable Dumbbells Review!” · YouTube

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