24kg adjustable dumbbells at a low price, but not the cheapest

Yes — the BRAINGAIN 15 in 1 Adjustable Dumbbells are worth buying if you want a compact 2.5kg to 24kg pair with strong user approval, and the current £219.99 price is at the all-time low. With a 4.6/5 rating from 1,215 reviews and 100+ bought last month, this is clearly a proven home-gym product rather than a niche gamble.

First impressions

The big appeal here is straightforward: one pair replaces 15 weight settings, from 2.5kg up to 24kg, and the set includes a storage dock. For a UK home gym, that matters because floor space is expensive and fixed dumbbell racks get costly fast. BRAINGAIN also ships these fully assembled, which removes the usual setup hassle that often annoys buyers of adjustable kit.

What do you actually get for £219.99?

You get a pair of adjustable dumbbells with a secure locking system, non-slip grip, chrome/black finish, and the promise of quick changes in seconds without removing plates. The product sits in the dumbbells and kettlebells category, currently ranked #2323, which is respectable given the size of the category. The price is also easy to judge: £219.99 is 4% off the £229.99 RRP, and the current price is the lowest recorded, so this is not one of those inflated “sale” listings.

How does it perform in a home gym?

For most home lifters, the strength of a 24kg adjustable dumbbell is versatility. A 2.5kg starting point is useful for accessory work, warm-ups, rehab-style movements, and upper-body isolation exercises, while 24kg per dumbbell is enough for a lot of pressing, rowing, and general hypertrophy work. The locking system is the key feature here: if the mechanism is genuinely secure, that is what separates usable adjustable dumbbells from awkward ones that feel loose or fiddly mid-session.

The main performance advantage is time and tidiness. Instead of buying multiple fixed pairs, you get a compact setup that keeps weights organised and off the floor. That makes these especially relevant for garage gyms, spare rooms, and shared spaces where you need fast adjustments and minimal clutter.

Is the build quality good enough?

BRAINGAIN claims a premium cast iron construction with a chrome/black finish, and that is the right direction for durability in this category. Adjustable dumbbells live or die by their selector mechanism, handle feel, and how confidently the plates lock in place. The non-slip grip is another practical detail that matters more than flashy branding: if you train hard and sweat, handle security is not optional.

That said, the product data does not give steel gauge, exact handle diameter, or warranty terms, so I would not compare it to a commercial-grade dumbbell system. This is a home-gym solution, not a rack-mounted pro setup. The warning here is simple: if you want the absolute fastest dumbbell changes or the feel of fixed hex dumbbells, adjustable systems always involve a compromise.

How does it compare to Bowflex alternatives?

Against the Bowflex SelectTech 552 at £171.99, BRAINGAIN is more expensive, but both target the same 2 to 24kg adjustable dumbbell use case. Bowflex also carries a 4.7★ rating, so BRAINGAIN does not win on raw price or review score. Against the Bowflex 1090i at £300.00, BRAINGAIN is much cheaper and still reaches 24kg, which makes it the better value if you do not need the higher-end Bowflex branding.

The Bowflex adjustable kettlebell at £179.95 is a different product, so it is only relevant if you specifically want kettlebell-style training. For pure dumbbell work, BRAINGAIN’s strongest argument is that it hits the useful 24kg ceiling at a lower entry price than the 1090i and with a very strong review count.

Is it good value for money?

At £219.99, value depends on what you are replacing. If this set saves you from buying multiple pairs and a rack, the economics are decent. If you only need one or two fixed dumbbell sizes, it is expensive. The fact that it is at the all-time low helps, because you are not paying a premium above its established price history.

What should buyers watch out for?

The biggest limitation is the 24kg cap. Stronger lifters will outgrow that quickly for pressing, rows, and lower-body dumbbell work. Also, adjustable dumbbells are only as good as their mechanism, so long-term satisfaction depends on how well the locking system holds up under regular use. Finally, the listing gives limited technical detail on dimensions, warranty, and exact adjustment mechanics, which makes it harder to compare against premium competitors on paper.

Final take

If you want a space-saving adjustable dumbbell pair with a strong track record, the BRAINGAIN set makes sense at £219.99. It is best for home gym users who value compact storage, quick weight changes, and a 2.5kg to 24kg range more than the feel of fixed dumbbells. If you are chasing heavier loads or the lowest possible price, the Bowflex SelectTech 552 at £171.99 may be the better comparison point.