There are 5 or 6 excellent pairs of adjustable dumbbells on the market, the Ironmaster pair, Powerblocks and Cores twist locks to name a few, but what is that make the Bowflex adjustable dumbbells the most popular dumbbell pair on the market today?

Reputation! yes, reputation will go a long way to selling any product and if you have the history of the likes of Bowflex who are very well known for their high-grade fitness equipment, you already have a lead over the struggling competitors.

But reputation alone will not make a dumbbell set as successful as the Bowflex series, Bowflex brought something new to the adjustable dumbbell market, they designed an adjustment system you could quickly change with a twist of your wrist.

Speedy Adjustment Times!

No longer do you have to remove and add weight plates to your dumbbell handle which took up valuable time between sets. Bowflex’s dumbbells now included their dial a weight adjustment system. A time-saving system that takes just a few seconds to select the desired weight of your choice.

Another brilliant feature of this highly adjustable pair is their ability to replace up to 16 pairs of standard fixed weight dumbells. Bowflex 552 with 5 -52lb weight range not only reduces the space needed to store your dumbbells it also lowers the price compared with having to buy a set of fixed weight dumbbells.

They may be the best selling adjustable dumbbells but are they the best?

I’ll cover just about all you need to know about the Bowflex 552 dumbbells in this review: weight range, adjustability, build quality,  pros & cons and a video to give you a really good look at the dumbbells.

Product Description

Set of two dumbbells
Dimensions – 8″ x 9″ x 15.75″ (W x H x L)
Weight range of 5 – 52.5lb per dumbbell
2-year warranty
15 different weight settings: 5, 7.5, 10, 12.5, 15, 17.5, 20, 22.5, 25, 30, 35, 40, 45, 50, and 52.5 lb
Adjustable in 2.5lb increments up to 25lb


I think it’s worth a mention that the 552’s are probably not best suited for pro bodybuilders or serious strength training. A 52lb weight range is geared more towards beginners and intermediates or fitness fanatics looking for an adjustable pair to add resistance training to their fitness routines.

That’s not to say you can’t build some serious muscle mass with a weight range of 5-52lb, and it’s possible some beginners may never outgrow the weight range. It’s just worth noting,  for some popular exercises like bench press and military press as your strength increases 52lb per dumbbell just might not be enough.

The design of the Bowflex will not allow for extra weights to be added, there are no expansion packs available like you have with the Power Block or Ironmaster pairs.

This is something to always keep in mind, try and think ahead what are you training for, strength, bodybuilding, endurance training? As you do not want to be left in a year or two having to pay out for an extra set of dumbbells for heavy workouts.

Bowflex Adjustable Dumbbells Video

If you love the quality of Bowflex and the select dial system, extreme and more serious lifters would certainly want to take a  look at the Bowflex 1090 pair, they have a higher weight range, up to 90lb per dumbbell.

If I sound like I’m talking this pair down I’m not, all I’m saying is, it’s a good idea to think ahead, and for most people, the weight range of the Bowflex 552 should be sufficient, especially if you perform the exercises with correct form.

What’s great about this set is you can select weights in 2.5lb increments up to 25lb, excellent for isolation exercises where you might need the micro increments, this really does help make the Bowflex pair that little more versatile than some of its main competitors

Woman bicep curling with bowflex 552 dumbbell

Ease of Adjustment

The patented select tech dial a weight adjustment system is arguably the best feature of this dumbbell pair, and I’m sure it’s what sells 1000’s of these fantastic dumbbells every month and so it should do. It’s fast and hassle-free and almost foolproof.

The adjustment system will speed up times between sets, great for super sets, drop sets and CrossFit, slightly faster than the Powerblocks and I’d almost say twice as fast as the Ironmaster to adjust, making Bowflex  No.1 for speedy adjustment times.

So how does this adjustable system work? Nice and simply thankfully, there’s a numbered dial at each end of the dumbbell that you twist to select one of the 15 different weight amounts.

The weight plates then attach to the handle using little brackets inside each handle. By turning the handle the brackets select and grab the weight selected, leaving the unselected weight plates behind in the specially made holding cradle. It’s that simple.

demonstration of bowlfex 552 adjustment system

What’s nice about this system is you have the option to decide how much weight to select  on each side of the dumbbell.

It can be handy sometimes to use offset weight configurations with dumbbells for exercises such as farmers walk, hammer curls, lunges etc, although for most offset weight training I’d recommend using a barbell, less stress on your joints.

Durability & Build Quality

When you hear the name Bowflex you immediately think of a premium brand and a price tag to match! And yes both are true of their dumbbells sets. Premium quality at a price.

Bowlex’s reputation is built on providing guys and gals at home with some of the best fitness products on the market and their dumbbells are no exception.

What they have managed to do here is design and build a dumbbell set that’s super fast to adjust and tried incredibly hard to make it as durable as possible.

A well designed ergonomic handle ensures the thicker part of the handle is in the middle of your palms giving you a comfortable grip, it’s nice to see the handle also has slight ridges in the grip helping with any slippage issues.

I had a good read of the Amazon reviews for you, and to be honest, I was surprised just how positive all of the reviews were, with 94% giving the Bowflex pair 4-5 start review ratings, that’s quite impressive considering the number of reviews, nearly 4000! A very reassuring stat for you if the Bowflex are at the top of your wish list.

man dumbbell bench press with bowlfex dumbbells

Excellent build quality is usually coupled with an extended warranty,  Bowflex offers a 2-year warranty, Powerblock a 10-year and Ironmaster a lifetime, they are the top 3 adjustable dumbbells at this price point.

So why are Bowflex only offering the 2-year warranty? My thinking on this would have to be the design of the adjustment mechanism and the fact the weights plates are covered in hard plastic.

Dumbbells, because of their environment, tend to have a rough life, stick plastic into the equation, and you could hit a few problems.

Dropping a dumbbell by either training to failure or by accident is commonplace in most gyms. Still, most gyms use fixed weight dumbbells, which are very hard to damage,  adjustable dumbbells have moving parts, and some of those parts are plastic, and I’m afraid if dropped from a height will break.

First to break will probably be the handle and then the hard plastic surrounding the weight plates. It’s not all bad; you can try and be very careful when training with sets like the Bowflex, and it’s also great to know Bowflex listened to the customers and replaced an essential part in the new sets.

The Bowflex dumbbells now have metal tabs that secure the weight plates in place, before this the first sets used to have plastic tabs and many customers were complaining of breakage only after a few days.

Thankfully Bowflex listened and changed to metal, making this set much more durable, this doesn’t mean you can throw them around, but it certainly makes the pair a lot less delicate.

bowflex dumbbells on stand

There is one other issue with the Bowflex dumbbells and it was my main concern for the dumbbell pair, they have the longest handles out of all the dumbbells I have reviewed, and long handles can mean awkwardness.

It can be troublesome using longer handles especially when curling with the handle, they can hit the hips and also tend to clash with overhead pressing but it’s something you can get used too,  most people seem to be fine with the handle length after a few weeks, it’s a not a deal breaker.

The Good

User friendly foolproof design

One of fastest adjustable dumbbells on the market

Comfortable ergonomic grip

Affordable much cheaper than buying a fixed weight hex set

Adjusts in 2.5lb increments up to 25lb

The Bad

Long handles

Plastic coated weight plates can crack if dropped

No expansion packs available 



core fitness dumbbells on stand white background

Core Fitness Twist-Lock Adjustable Dumbbells

The Core Fitness dumbbells are a set of dumbbells that have become very popular over the past few years, and there a good reason why?

The CoreFtness set are anther set that is super fast to adjust they are a little faster than the Bowflex 552 since with the Core set you only have to twist your wrist to select the desired weight as opposed to the Bowflex where you have to select the weight at both ends of the dumbbells.

The Core set has a similar max weight range at 50lb per dumbell. But what holds these dumbbells back is only being able to adjust them in 5lb increments as compared with the 2.5lb increments of the Bowflex. For serious lifters going up in 5lb may not be a problem.

Although for isolation exercises, smaller increments are preferable. This is the only real downside of the CoreFitness set.

On the positive side, the handle length of the Core Fitness dumbbells is much shorter than the Bowflex, just like the Powerblock and Ironmaster sets the Core fitness handle length only increases when more weight is added.

Overall a great set of adjustable dumbbells, Core Fitness thought well about their design by keeping the dumbbell compact and easy to use. If you don’t mind the 5lb increments the Core Fitness adjustable dumbbell set deserves a closer look.


To Sum Up

As with all Bowflex gym gear, their adjustable dumbbells are impressive, excellent build quality, fast adjustment times, and importantly, we see the 2.5lb increments.

If you’re after speedy adjustment times and a top-quality build, then the Bowflex 552 Dumbbells shouldn’t disappoint. The long handles may put off a few people, but for me, it’s certainly not a deal killer.

There are a lot of adjustable sets out there trying to mimic the Bowflex design. Don’t be fooled by those. Bowflex was first to patent the Select-Tech design, and they are still, by a long way the best!