PowerBlock vs Bowflex vs Nuobell: Which Adjustable Dumbbell Is Right for You?

If you are shopping for adjustable dumbbells, three names dominate the conversation: PowerBlock, Bowflex, and Nuobell. Each brand has earned a loyal following, but they approach the same problem — replacing an entire rack of fixed dumbbells with a single space-saving set — in fundamentally different ways. The PowerBlock uses a block-and-pin system that resembles a gym machine. The Bowflex SelectTech 552 relies on a rotating dial that clicks into place. The Nuobell combines a twisting handle mechanism with metallic housing that looks and feels more like a traditional dumbbell.

Choosing between them means weighing trade-offs in speed, durability, weight range, and feel. This three-way comparison breaks down how each system performs across the criteria that matter most for a home gym.

The Contenders

PowerBlock Pro EXP

PowerBlock invented the adjustable dumbbell category decades ago, and their design remains one of the most durable on the market. The Pro EXP series uses a selector pin that slides into weight plates stacked inside a steel cage. You choose the weight by inserting the pin into the corresponding slot, then lift — the unused plates stay locked on the base. It is not the most intuitive system at first glance, but it is nearly indestructible.

Price range: $350 to $600 depending on expansion stage. Weight range: 5 to 90 lbs per hand with expansion kits. Current model: Pro EXP (preceded by the older Urethane and Sport series).

Bowflex SelectTech 552

The SelectTech 552 is the best-selling adjustable dumbbell of all time, and for good reason: the dial system is the simplest, fastest weight-change mechanism ever put into a home dumbbell. Turn the dial to your desired weight, lift, and go. The 552 adjusts in 2.5 lb increments from 5 to 25 lbs and 5 lb increments from 25 to 52.5 lbs.

Price range: $350 to $450 depending on retailer and included stand. Weight range: 5 to 52.5 lbs per hand. Current model: Bowflex SelectTech 552 (updated in 2022 with revised cradles).

Nuobell 80

Nuobell is the newest contender, having exploded in popularity over the last few years by solving a problem the other two brands largely ignore: aesthetics and feel. The Nuobell uses a twisting mechanism inside the handle that adjusts both sides simultaneously, with weight numbers clearly displayed on the end caps. The shell is made of weighted steel with a nylon coating — no plastic housing that might crack over time.

Price range: $500 to $650 depending on retailer. Weight range: 5 to 80 lbs per hand (2.5 lb increments in early range, 5 lb beyond). Current model: Nuobell 80 (also available as Nuobell 50 and 60).

Design & Build

The design philosophy of each brand reveals what they prioritize.

PowerBlock treats adjustable dumbbells as a tool, not a piece of gym decor. The Pro EXP consists of a welded steel frame with weight plates stacked vertically. The handle is a cutout in the steel body — you never touch a plastic grip. The selector pin clips into the weight stack via a spring-loaded ball bearing. It is functional, rugged, and unabashedly industrial. The trade-off is that the block shape makes certain exercises (especially hammer curls and goblet squats) feel slightly different from a traditional hex dumbbell.

Bowflex went in the opposite direction with a consumer-friendly design that prioritizes ease of use. The handle is a thick rubber grip connected to a plastic housing that contains the weight plates. A dial on each end rotates to the target weight. The cradle (where the dumbbell rests between sets) is also plastic, which has been a source of durability complaints over the years. The shape is closer to a standard dumbbell than PowerBlock, but the plastic yoke is noticeably wider.

Nuobell bridges the gap between traditional feel and modern adjustability. The handle is a single metal bar with a rubber grip, and the weight plates fan outward from both sides when you twist the mechanism. The entire body is steel with a nylon coating, so there is no visible plastic. When set to a specific weight, the Nuobell looks and handles almost identically to a fixed dumbbell of the same poundage. This is the most aesthetic option by a wide margin.

Weight Range

Weight range is where these three diverge most dramatically.

The Bowflex SelectTech 552 tops out at 52.5 lbs per hand. This is sufficient for a wide range of exercises — lateral raises, curls, tricep extensions, and shoulder work — but will be outgrown relatively quickly for compound movements like rows, presses, and lunges. Intermediate and advanced lifters will need more weight within the first year of consistent training. Bowflex does not offer expansion kits; what you buy is what you get.

The PowerBlock Pro EXP starts at 5 lbs and expands in stages. The base model goes to 50 lbs per hand. Adding the Stage 1 expansion kit brings it to 70 lbs, and Stage 2 takes it to 90 lbs. This modularity is a major selling point for lifters who plan to progress over time. You pay incrementally rather than buying a new set. PowerBlock also sells heavier commercial models (up to 175 lbs per hand), making it the only brand on this list with a genuine path for strength athletes.

The Nuobell 80 goes from 5 to 80 lbs per hand out of the box. There are no expansion kits — 80 lbs is the ceiling. This is significantly more than Bowflex and roughly comparable to a PowerBlock with Stage 1 expansion. For most home gym users, 80 lbs is enough for the bulk of their training. Heavy deadlifts and leg presses are not dumbbell movements anyway. But if you are a serious powerlifter or strongman competitor, 80 lbs may leave you wanting more for rows and incline presses.

Verdict on range: PowerBlock wins for scalability and maximum weight. Nuobell wins for range out of the box. Bowflex is the clear third place in this category.

Ease of Use

Speed of weight changes and ergonomics during workouts separate these systems in practice.

The Bowflex dial is the fastest. You rotate the dial, the dumbbell clicks, and you lift. Weight changes take about two seconds. The learning curve is zero — anyone can figure it out on the first try. The downside is that the cradle is required for adjustments. If you take the dumbbell off the cradle, you cannot change the weight. This is fine for structured workouts but becomes annoying during supersets or circuit training.

The PowerBlock pin system is slightly slower but more flexible. You set the dumbbell down (on any flat surface — no special cradle needed), pull the pin, insert it into the new weight slot, and lift. Total time is about three to four seconds once you are familiar with the system. Beginners may fumble with the pin for a few sessions, but it quickly becomes second nature. The real advantage is that you can change weights anywhere. Drop sets and supersets work naturally because the block sits flat on a bench or the floor.

The Nuobell twist mechanism is the most elegant on paper but the slowest in practice. You hold the handle and twist to release the plates, rotate to your target weight, and twist back to lock. The mechanism requires a small amount of dexterity and fingertip strength. When it works smoothly, it takes about four to five seconds. When the plates bind or the mechanism is new and tight, it can take longer. The trade-off is that the Nuobell does not need a cradle at all — the weight is stored on the dumbbell itself.

Convenience ranking: Bowflex > PowerBlock > Nuobell (speed). PowerBlock > Nuobell > Bowflex (flexibility in workouts).

Durability

Long-term reliability is a critical factor for a product you may own for a decade or more.

PowerBlock is the durability king. The steel cage construction can withstand drops from bench height, and the selector pin mechanism is simple enough that there is little to break. The only wear items are the spring-loaded pin ball bearings, which are replaceable. Used PowerBlocks from the early 2000s still function perfectly. The welds are strong, and the powder coat finish holds up well. About the only complaint is that the foam handle grips can degrade over years of heavy use, but replacements are available.

Bowflex has the most documented durability concerns. The plastic yoke that holds the weight plates can crack or warp, particularly if the dumbbell is dropped or subjected to heavy use. The locking mechanism inside the shell can also loosen over time, leading to wobble at higher weights. Nautilus (which owns Bowflex) has revised the design multiple times, but the plastic construction remains a limitation. On the positive side, the weight plates themselves are metal and hold up fine. The cradle is also plastic and prone to cracking if the dumbbell is slammed down repeatedly.

Nuobell sits in the middle. The all-metal construction with nylon coating is clearly more durable than the Bowflex plastic yoke. However, the twist mechanism is mechanically complex — it involves a threaded collar, locking pins, and spring-loaded components. If any of these parts bind or break, the entire dumbbell may become unusable. Early-generation Nuobells had reports of the nylon coating chipping. Later revisions improved this. Overall, Nuobell is built well enough for regular home use but may not survive a commercial gym environment as well as PowerBlock.

Long-term pick: PowerBlock, by a comfortable margin.

Price

Pricing depends on retailer, sales, and whether you buy with or without a stand or cradle.

The Bowflex SelectTech 552 typically retails for $350 to $450. This includes the dumbbells, the cradle, and a small booklet with sample workouts. It is the most affordable entry point into high-quality adjustable dumbbells. Bowflex frequently runs sales, so you can often find the 552 for under $400.

The PowerBlock Pro EXP base set (5-50 lbs) costs around $350. Stage 1 expansion (50-70 lbs) adds about $100. Stage 2 (70-90 lbs) adds another $100. A full Pro EXP system with stand runs approximately $550 to $650. This makes PowerBlock competitively priced for the base set but increasingly expensive as you expand.

The Nuobell 80 costs $500 to $650 depending on the retailer. This includes the full 5-80 lb range in one purchase. There are no expansion kits or additional costs beyond the initial buy. At the upper end of its price range, the Nuobell is more expensive than either the Bowflex or the base PowerBlock, but it offers a higher weight ceiling than Bowflex and a more traditional feel than either competitor.

Verdict

There is no single “best” adjustable dumbbell for everyone. The right choice depends entirely on your training goals, budget, and priorities.

Choose the PowerBlock Pro EXP if you value durability above all else, plan to train for years, and want a weight range that grows with you. The industrial design is not beautiful, but it will outlast every other component in your home gym. It is the smart choice for heavy lifters and anyone who does not mind a slight learning curve in exchange for rock-solid reliability.

Choose the Bowflex SelectTech 552 if you want the fastest weight changes, are shopping on a budget, and do not need more than 52.5 lbs per hand. The dial system is genuinely delightful in daily use, and the low price makes it an easy recommendation for beginners and casual lifters. Just be aware that the plastic housing is a long-term concern and the weight ceiling will eventually limit your progression.

Choose the Nuobell 80 if you care about aesthetics, want a traditional dumbbell feel, and need a higher weight range than Bowflex offers without the boxy shape of PowerBlock. The Nuobell is the most pleasant dumbbell to use in a living-room or bedroom gym where appearance matters. The twist mechanism is slower than a dial, but the trade-off in build quality and visual appeal is worth it for many users.

For a deeper look at each option, read our full reviews: Bowflex SelectTech 552 review, PowerBlock Pro EXP review, and Nuobell 80 review. And if you are still undecided, take a look at our top-rated adjustable dumbbells for a complete ranking of what we recommend today.

Author byline — Name (to be added)

For a complete breakdown of every top contender, see our Best Adjustable Dumbbells guide.

Mike Reynolds is a certified personal trainer (CPT) and home gym equipment reviewer with over 15 years of experience testing adjustable dumbbells, benches, and compact strength equipment.