Bowflex SelectTech vs PowerBlock: Which Adjustable Dumbbells Are Worth It?

If you're building a home gym and you've narrowed it down to adjustable dumbbells, you've probably landed on the same two names that everyone lands on: Bowflex SelectTech and PowerBlock. They dominate this category for good reason. Both replace a full rack of traditional dumbbells. Both work. And both have loyal fan bases who will argue passionately that their pick is superior.

Here's the honest answer: neither is universally better. But one is almost certainly better for you, depending on how you train.

Quick verdict: Bowflex SelectTech 552 wins on aesthetics, compactness, and ease of use for most home gym lifters. PowerBlock wins on durability, commercial viability, and expandability for serious lifters who want a system that grows with them. If you're furnishing a garage gym for one person lifting 3-4x per week, go Bowflex. If you're outfitting a space multiple people will use daily — or want a set you'll keep for 20 years — PowerBlock is worth the extra durability.

For a full ranking of every adjustable dumbbell option, see our best adjustable dumbbells guide. If you're furnishing a complete home setup, our best home gym equipment guide covers everything else you'll need alongside dumbbells.

Side-by-Side Comparison

Key Differences Breakdown

1. Selection Mechanism: Dial vs. Pin

This is the most fundamental design difference, and it matters more than most reviews admit.

Bowflex uses a patented dial system. You rotate a number dial on each end of the dumbbell to set your weight, then lift. The mechanism is satisfying, intuitive, and fast. The downside: it's more complex mechanically, which means more that can break over time. Bowflex has addressed earlier quality issues in newer versions, but "the dial broke" is still the most common complaint in long-term reviews.

PowerBlock uses a selector pin system — similar to a cable weight stack in a commercial gym. Plates stack inside a rectangular cage, you drop in a pin at your desired weight, and you're done. It's simpler, more durable, and has a proven track record in commercial settings where dumbbells take abuse daily.

Winner: PowerBlock for durability. Bowflex for first impressions and ease of use.

2. Shape and Feel in the Hand

This is genuinely personal preference, but there's a real difference.

Bowflex SelectTech 552 feels like a normal dumbbell. The weight is distributed along a straight handle with endcaps on each side. It looks familiar and feels intuitive whether you're doing curls, presses, or lateral raises.

PowerBlock has a rectangular, cage-like design. The handle sits inside a frame of weight plates. It takes about two sessions to get used to — your thumb has to wrap around differently for certain movements, and doing hammer curls or certain wrist-rotating exercises can feel slightly awkward. Most lifters adapt quickly. A few never do.

Winner: Bowflex SelectTech for feel. PowerBlock for those who prioritize function over form.

3. Weight Range and Adjustability

Both sets cover the 5–50 lb range, which covers 95% of typical home gym needs. But the increments differ.

Bowflex SelectTech 552 goes in 2.5 lb increments below 25 lbs, then shifts to 5 lb increments from 25–52.5 lbs. That's a total of 15 weight settings per dumbbell.

PowerBlock Elite 50 adjusts in 2.5 lb increments throughout (with some models), offering finer control at heavier weights. More importantly: the Elite 50 can expand. With the Stage 2 expansion kit ($69), you get up to 70 lbs. With the Stage 3 kit ($79), you reach 90 lbs per dumbbell. That's a full strength-training range that Bowflex simply can't match.

If you're expecting to grow into heavier weights, PowerBlock wins this category handily.

Winner: PowerBlock for range and expandability. Bowflex for the 5–52.5 lb range as a fixed system.

4. Durability and Long-Term Reliability

The honest truth: Bowflex SelectTechs are not designed for abuse. They're well-built for home use, but the plastic housing and dial mechanism are vulnerable to being dropped, tossed, or used in environments with heavy moisture or grit. Bowflex's 2-year warranty reflects this.

PowerBlock's construction is more straightforward — steel plates in a steel cage. Less complex = less that can fail. Their selector mechanism carries a lifetime warranty, which tells you something about their confidence in it.

This doesn't mean Bowflex falls apart. Many people use their SelectTechs for 5–7+ years without issues. But if you want something you could theoretically hand down to your kids, PowerBlock has the edge.

Winner: PowerBlock, and it's not close.

5. Space and Storage

Bowflex SelectTech 552 is notably compact. Each dumbbell takes up a footprint roughly the size of a shoebox. They store neatly on the included tray and visually disappear in a corner. If you're in an apartment or a small dedicated space, this matters.

PowerBlock takes up more floor space. The block design is slightly wider and taller, and some users find them less aesthetically pleasing in a home gym that also has to double as a living space.

Winner: Bowflex SelectTech for compact footprint and aesthetics.

Official specs and current pricing: Bowflex SelectTech 552 product page | PowerBlock Elite adjustable dumbbells

What They Have in Common

• Both effectively replace 15+ pairs of traditional dumbbells
• Both adjust in seconds without needing to manually stack plates
• Both are well-reviewed across thousands of verified purchasers
• Both are appropriate for all standard dumbbell movements: curls, presses, rows, flyes, lateral raises, Romanian deadlifts
• Neither is appropriate to drop — that's true of all adjustable dumbbell systems

Price and Value Analysis

Bowflex SelectTech 552: ~$379 for the pair (often $299–$329 on sale). That's roughly $7 per pound of maximum load, or about $25 per pair of "replaced" traditional dumbbells.

PowerBlock Elite 50: ~$249–$279 for the base set. Lower upfront cost than Bowflex. But if you add the Stage 2 expansion ($69) and Stage 3 ($79), you're at ~$400–$430 for a 90 lb/hand set. That's outstanding value for a system that can scale to powerlifting territory.

Bottom line on price: PowerBlock is cheaper to start and significantly better value if you expand. Bowflex is a fair deal for the fixed range it offers — especially when it's on sale, which is often.

Who Should Buy Bowflex SelectTech 552?

• You're a home gym beginner or intermediate lifter who doesn't need to go above 52.5 lbs
• Aesthetics matter — you want something that looks good and doesn't scream "gym equipment"
• One primary user who doesn't share equipment with other people regularly
• You prefer a familiar dumbbell feel and don't want to adapt to a new shape
• Budget: You're OK paying a slight premium for the design

Read our full Bowflex SelectTech 552 review for an in-depth look at performance, durability, and long-term ownership.

Buy Bowflex SelectTech 552 on Amazon — ~$379

Who Should Buy PowerBlock Elite?

• You're serious about strength training and expect to eventually need 60–90 lb dumbbells
• Multiple people will use these in a family gym or small group training environment
• Durability is a priority over aesthetics — you want something that lasts 20+ years
• You want expandability and don't want to buy a whole new set as you get stronger
• Budget: You want the best long-term value per dollar spent

Buy PowerBlock Elite on Amazon — ~$249–$279 base

Prices shown may vary. Links may be affiliate links.

The Bottom Line

For most people building a home gym, Bowflex SelectTech 552 is the easier, more intuitive choice. It looks good, adjusts fast, feels like a normal dumbbell, and covers 5–52.5 lbs — which is plenty for most training programs. The higher price is the only real knock.

If you're a serious lifter who plans to keep training hard for years, or if multiple people in your household will use these dumbbells, PowerBlock Elite is the smarter long-term investment. It's more durable, more expandable, and ultimately cheaper when you factor in how long it lasts.

Neither is a bad purchase. But now you know the actual tradeoffs — so pick the one that matches how you actually train.

FAQ

Can I do every exercise with adjustable dumbbells that I'd do with regular dumbbells? Almost all of them, yes. The main exceptions are movements where you drop the weight (Olympic lifts, heavy kettlebell swings) or where the shape of the dumbbell matters (some wrist rotation movements feel awkward on PowerBlock). For standard strength training — pressing, pulling, curling, hinging — both work perfectly.

Which adjustable dumbbells are more durable: Bowflex or PowerBlock? PowerBlock has the more durable construction. The selector pin mechanism is simpler than Bowflex's dial system, which means fewer failure points. PowerBlock also offers a lifetime warranty on the selector, while Bowflex provides 2 years. For daily, heavy-use environments, PowerBlock is clearly ahead.

Can I use Bowflex SelectTech on a weight bench? Yes, absolutely. Bowflex SelectTech are designed to be used with a flat bench or adjustable bench for all standard pressing and rowing movements. The shape is slightly bulkier than traditional dumbbells, so you'll want to confirm they fit comfortably under your grip style, but most users report no issues.

Is PowerBlock more expensive than Bowflex overall? The base PowerBlock Elite 50 Set is actually cheaper than the Bowflex SelectTech 552 (~$249 vs ~$379). However, if you add PowerBlock expansion kits to reach 70 or 90 lbs per hand, the total cost can reach $400+. Bowflex has no expansion option, so the comparison depends on your weight range goals.

Is there a better alternative to both Bowflex and PowerBlock? Yes. The NordicTrack Select-A-Weight competes in this range. For higher budgets, Rep Fitness Fast Adjust dumbbells offer a 5–100 lb range with a rapid adjustment system that some users prefer. NUOBELL and the Rogue Monster Chain Bells serve niches on either side. But for most people comparing Bowflex vs PowerBlock, either option is a strong pick at its respective price point.