Our Take
The PowerBlock Pro 100 is a premium adjustable dumbbell system that replaces a full rack of weights, adjusting incrementally up to 100 lb (approximately 45 kg) per hand. Aimed at serious home gym users who train with heavy compound and isolation work, it sits firmly in the upper tier of the adjustable dumbbell market, competing with the likes of Bowflex SelectTech 1090.
Key Features
Adjusts from 5 lb to 100 lb (roughly 2.3–45 kg) per dumbbell in incremental stages
Uses a selector pin and collar-style mechanism to change weight quickly between sets
Compact block design replaces up to 16 pairs of traditional dumbbells
Steel construction with a relatively dense, square block shape that stays stable on a rack or stand
Compatible with PowerBlock's optional accessory stand and curl bar attachment
Handles feature an open-centre design, with limited knurling compared to fixed dumbbells
Our Verdict
The PowerBlock Pro 100 suits dedicated home gym users who lift heavy, want a space-efficient solution, and don't mind adapting their technique slightly to the block format. Casual lifters or those who prioritise a traditional dumbbell feel should consider a fixed set or a lower-priced adjustable alternative instead.