PowerBlock Pro 100 EXP review

The Pro 100 EXP solves the main problem with dial dumbbells: running out of weight. You start with a pair that adjusts from 5 to 40 lbs, then add 20 lb expansion kits as you get stronger, up to 60, 80 or 100 lbs per hand. A magnetic selector pin sets the load, and two 2.5 lb chrome micro weights in each handle let you move in 2.5 or 5 lb steps. PowerBlock sells kettlebell handles and curl and straight bar attachments that clip onto the same system, which helps if you want one compact set to cover more than dumbbell work. The costs add up, though. The starting pair was listed from $539 when we checked and the full 100 lb pair at $1,196, before a stand. The square block shape also sits differently against your forearms than a round dumbbell on presses and curls. PowerBlock backs it with a 5-year residential warranty that excludes commercial use.

Who it is for

lifters who expect to outgrow 50 lbs

Price

From $539 at PowerBlock's US store when checked for the 5 to 40 lb pair; the 5 to 100 lb pair listed at $1,196.

PRO 100 EXP from $539.00
Quoted from the vendor pricing page on November 12, 2026.

Key features

• Starts at 5 to 40 lbs and expands to 60, 80 or 100 lbs with Stage 2, 3 and 4 expansion kits
• Two 2.5 lb chrome micro weights per handle for 2.5 or 5 lb adjustments
• Magnetic selector pin changes the weight
• Knurled or TPR grip options
• Kettlebell handle, EZ curl bar and straight bar attachments sold separately

Strengths and weaknesses

• Strength: Highest ceiling on this list at 100 lbs per hand
• Strength: Buy only the weight you need now and add 20 lb kits later
• Strength: 5-year residential warranty, longer than Bowflex's 2 or 3 years of parts coverage
• Weakness: The full 5 to 100 lb pair listed at $1,196
• Weakness: Block shape feels different from a round dumbbell
• Weakness: Warranty does not cover commercial use

Key facts

• Price: From $539 (5 to 40 lb pair); $1,196 for 5 to 100 lbs
• Weight range: 5 to 40 lbs, expandable to 100 lbs per dumbbell
• Micro weights: Two 2.5 lb per handle
• Sold as: Pair
• Warranty: 5 years residential

Where it ranks

PowerBlock Pro 100 EXP is No. 2 in our Best Adjustable Dumbbells verdict.