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QUICK-LOCK DUMBBELL SET 45 LBS (20 KG)

QUICK-LOCK DUMBBELL SET 45 LBS (20 KG)

Does the work of an entire rack of fixed dumbbells

Start your home gym strong with commercial-grade adjustable dumbbells that don't take over your space. The Quick-Lock Dumbbell Set 45 lbs (20 KG) adjusts in seconds, making it easy to train at home and progress as you get stronger.

Regular price £449.00 GBP
Regular price £519.00 GBP Sale price £449.00 GBP
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Taxes included.

Click For Features

  • World's strongest adjustable dumbbells - no plastic parts.
  • Quick-Lock system for fast weight changes.
  • Adjustable 2–20 kg (4.4–45 lbs) per dumbbell.
  • Expandable to 74 kg (165 lbs) with add-on kits.
  • Compatible with Quick-Lock kettlebells.
  • Includes two heavy-duty handles.
  • Covered by the Ironmaster Lifetime Warranty.
£4.94 MAINLAND UK DELIVERY
FAST DELIVERY
LIFETIME WARRANTY
30 DAY RETURN
TRUSTED BY THOUSANDS
Quantity

SKU 45

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  • Powerful Training Even in the Smallest Spaces

    The space-saving design delivers maximum performance and versatility with a tiny footprint suitable for any home gym.

  • Lift with Total Confidence

    The Ironmaster Quick-Lock Adjustable Dumbbells' fine "diamond peak" knurling gives the ideal balance of comfort and control

  • Weight Changes You Can Make Fast

    The quick, intuitive adjustment lets you adjust weights in seconds without interrupting your flow.

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FAQs: QUICK-LOCK DUMBBELL SET 45 LBS (20 KG)

What is included in this set?

The Quick-Lock Dumbbell Set 45 lbs (20 KG) includes everything you need to start your home gym setup:

  • 2 precision knurled-grip chrome-plated handles: 1.25" (3.2 cm) grip diameter
  • 12 x 5 lbs (2.2 kg) plate, 4 x 2.5 lbs (1.1 kg) plate
  • Patented Ironmaster Quick-Lock locking screws
  • Ironmaster Lifetime Warranty
  • Storage available separately

Where should I start? Which set do I need? And how do I progress?

Most customers start with the Quick-Lock Dumbbell Set 45 lbs (20 kg)

  • The 75 lb Upgrade Kit: adds up to 30 lbs (13.6 kg) per dumbbell. Using the same locking screws as the 45 lb set (20kg).
  • The 120 lb Add-On Kit: includes four 22.5 lb plates and long locking screws
  • And the 165 lb Add-On Kit: includes four more 22.5 lb plates and extra-long locking screws

If you want to go heavier, start with the Quick-Lock Dumbbell Set 75 lbs (34 kg)

  • The 120 lb Add-On Kit: includes four 22.5 lb plates and long locking screws
  • And the 165 lb Add-On Kit: includes four more 22.5 lb plates and extra-long locking screws

The same handles work across all sets.

Do I need to buy separate screws?

Nope! Every dumbbell set and add-on kit comes with all the screws you'll ever need. No guessing required.

Is 165 lbs (74.8 kg) the heaviest these dumbbells can go?

With add-on kits, 165 lbs (74.8 kg) is the max. But if you want to lift even heavier, you might want to check out the Heavy Handle Plate Kit that adds 15 lbs (6.8 kg) to each handle, giving you extra room to grow.

How small can the weight increments be?

Weight changes can be as small as 2.5 lbs (1.1 kg) per dumbbell, so you can adjust your training without making huge 5 lbs (2.2 kg) jumps.

QUICK-LOCK DUMBBELL SET 45 LBS (20 KG)

Ironmaster Patented Quick-Lock Adjustment System

The Ironmaster Quick-Lock Dumbbell Set adjusts from 545 lbs (2.2 kg - 20 kg) per hand in 2.5 lb (1.1 kg) increments using a patented Quick-Lock screw system so you can change weights quickly and easily without fiddly spin locks or fragile plastic parts. Just slide the plates on and secure them with the locking screw. You can adjust the weight in seconds, perfect for circuits, pyramids, and everyday strength sessions.

Heavy-Duty Steel Construction

These dumbbells are built entirely from Iron and Steel, with no plastic parts that can crack or wear down over time. The chrome-plated handles provide corrosion resistance and durability, while the precision-cast plates ensure accurate weight and a balanced feel. The result is commercial-quality equipment built for a lifetime of training.

Precision Knurled Grip for Secure Lifting

Each chrome handle features a carefully machined knurled grip, giving you reliable traction even during demanding sets. The dumbbells feel balanced, solid and natural in your hands, helping you focus on form, strength, and control.

Expandable Weight System

This adjustable dumbbell set replaces an entire rack of fixed dumbbells but takes up only a small footprint in your home gym. Unlike many adjustable dumbbells that cap your progress, the Quick-Lock system is fully expandable.
You can increase the maximum weight using optional expansion kits. Upgrade from 45 lbs (20 kg) to:
- Standard expansion up to 75 lbs (34 kg)
- 120 lb add-on kit (54.4 kg)
- 165 lb add-on kit (74.8 kg)
No need to replace your equipment, just grow with it. The Ironmaster Adjustable Dumbbell set is a long-term investment in your progressive strength training.

Compatible with the Quick-Lock Ecosystem

The weight plates and locking screws are compatible with other Ironmaster Quick-Lock equipment, including:

- Quick-Lock Adjustable Kettlebell
- EZ Curl Bar
- Straight Bar

Your equipment works together seamlessly, saving space and giving you more training options.

Frequently Bought Together

  • 5 stars: 32 (97%)
  • 4 stars: 1 (3%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
M
Matthew

These are really good dumbbells. Thoughtfully designed and manufactured very well, making the changing of the weights a much faster process than usual. They have a superior clean design.

S
Scott R.

Recently purchased a set of quick lock 20 kg dumbbells having spent a fair while reviewing various options out there. You just need to read reviews posted both on this site and the web generally to get a good understanding of what customers love about the Ironmaster dumbbells.
From great build quality to ease of use to handle ergonomics the consensus seems to be that the dumbbells are a great edition to anyone’s gym.
I can really only agree with what other reviewers have stated in as much as I am delighted with my purchase and have no regrets at all that I made the right choice. These will still be going strong for years to come.
These felt like fixed dumbbells and did not hinder my movements at all which was great and was of importance to me.
I would also like to point out that the set was very impressively packaged which was great to see and shows a company that cares that what you are paying for is what you will receive.
Others have stated that they are costly but factor in that these will likely be all you will need, with options to upgrade in the future and I don’t think anyone would feel short changed once they have the dumbbells in their hands.
Definitely worth considering if you are looking for a new set.

D
Daniel T.(.

Great purchase
These are reliable, compact, and easy to use. They feel sturdy and safe. I have no complaints. Worth every penny!

J
JAN (.

These dumbbells are rock solid with a very old school feel to them along with being a perfect size/balance for most all exercises. Taking an extra couple of seconds to reload the poundage is more than worth using the more popular twist handle adjustables given how much plastic in the mechanisms. I mean I'm not like throwing weights around on the regular but eventually if you are really working hard enough one will crash to the floor eventually and these will NOT break (maybe the floor...haha). Willing to take the chance with another $600 plus set...not for me. Also, luv the expansion options what else could you ask for..??

M
Martin B.(.

Solid
Simply love these dumbbells. They have a great feel to them. The quick-lock handles work very well, securing the plates tightly, resulting in the feel of a sold block of steel without any parts rattling or moving.

E
Evan

Awesome
I researched and researched adjustable dumbbells during the pandemic. A few things stand out with these dumbbells. #1 durability: no plastic anywhere, extremely simple yet effective design. #2 Lifetime warranty. #3 Feel of real dumbbells, only get larger when you add more weight. Flat sides to rest on knees. #4 expandable in the future. #5 quicker than spin lock dumbbells. To be clear not as fast as Bowflex or Powerblocks. For my use these have turned out to be the best and I look forward to using them for many years to come. . .

Z
Zach

Love it
Amazing product. Only used for a few weeks but have not been let down. Recommending to all my friends making home gyms.

P
Peter

Glad I did the research
I’m extremely pleased with my Ironmaster purchase. These replace a set of far lesser 45 ld weights. I considered several alternatives and settled on these thanks to positive reviews and a desire for an adjustable dumbbell that performed during the work out like a non adjustable weight. This is definitely the ticket. Getting the hang of quickly changing the weights happened after a couple of workouts and I now enjoy a set of 75 lb adjustable dumb bells that work like a full set of non adjustable weights. I don’t believe there is a better system on the market.

R
Reed

Awesome starter set
Great starter set, looking forward to slowly building out my home gym with the addons and different bar types

N
Nigel L.

My first purchase from Ironmaster
I was in need of a quality set of adjustable dumbbells to start my home gym. I spent some time researching on-line and watched tonnes of YouTube video reviews. Finally, I decided on these dumbbells. They were like Unicorns when they came in stock and when time and money intersected I ordered them to be shipped to Canada. I am so pleased I took the decision. They arrived at my door with great care and were packaged expertly. I've used them for about a month and they are superior quality, well made and will be a part of my fitness journey for a long time. Thanks Ironmaster, I'll be ordering more stuff again.

R
Ransley W.

Great quality!
The quality of these dumbbells are great. Very solid, and I like that there are no plastic parts. I moved over from Powerblocks, which served me well for a really long time, but the plastic parts begin to show wear and tear. Switching the weights is noticeably slower, but I would gladly trade the speed for the versatility and durability! So ultimately it depends on what you prioritize in your dumbbells, but these are a pretty solid choice.

D
Danny

Quick_Lock 45 set
I've been a customer for over 20 yrs and again they have the best systems. The dumbbell is the best ever.

M
Matt M.

A+
I've used the rest, and these are the best. Beautiful dumbbells with the look and feel of real dumbbells. Quality, heavy-duty build. While not as fast as competitors for weight changes, they are still quite fast. Like I said, I've used them all, and these are my favorite, hands down. If you can get a pair of these for your home gym, do it. Also less expensive than competitors in the high-end adjustable dumbbell market.

C
Chloe

Impressive!

These adjustable dumbbells have been recommended to me so many times that I decided it was time to get a pair. This is easily one of the best home gym products I've ever purchased. These dumbbells are so sturdy and incredibly well-made, and take up a fraction of the space a traditional rack would take up. The swapping between weights takes a bit of getting used to but once you get it down it's quite quick. For the price, these are a great deal. You can tell they're basically going to last forever (with some basic wear and tear).

Both myself and my husband are very pleased, and both of us use them. Bravo!

D
Dr D.S.

I've been using weights for almost 40 years and got bored with the laborious process of changing weights. I went for the 34 kg set and these dumbbells are great. Easy and quick to change up or down and good grips. Importantly they are compact enough so as to interfere with few if any of the typical dumbbell exercises (unlike other adjustable dumbbells). Whether you're looking for heavy loading with decent breaks between sets or you're looking for fast progression between different exercises, these dumbbells do the job perfectly. They are also very compact so if your job means you travel around a lot, you can easily take these with you and forego the muscular agony after a long layoff. Best £500+ I ever spent. I can't recommend these enough and the way things are progressing I'll be buying more plates shortly.

R
Rob A.

I have to admit, I am a newbie in terms of gym so I decided to start slow as a home gym user but with the intent to do it on the long run. I purchased the 20 Kg adjustable dumbbells in June and I am seriously considering getting a Super Bench. Amazing service and lovely people for when you need to speak directly to them. Thank you Ironmaster!

R
Reviewer

This weight set is sublime!! The lose weights tighten securely, and the grips are smooth. No more weights falling while you're trying to get buff! They are well worth the extra money you'd spend on the cheapo sets :)

R
Reviewer

Great dumbbells. I previously have owned the Bowflex adjustable. I liked them to a point but they really started to give me a headache. Longer, more awkward - harder to use. My sister has them now. These are fantastic, they actually look and feel like Dumbbells and they're easy to add and take off the weights. If you're looking to get big muscles they might not be for you but for the rest of us, perfect.

S
Seth

the best if you want high quality without spending thousands of dollars on individual dumbells
these feel just like the ones in the gym.
and if you add on the fat handle then it really feels like your using weights you find at the gym. the packaging was awsome.
the dumbells are very sturdy no plastic parts. these will be the dumbells i will stick with forever. and ive had other adjustable dumbells before. you will not regret it

C
Cerith

Top product, tried other multi dumbbell systems but this one beats them all hands down. Solid construction and the option to add a fair bit of weight with the add on packs; a definite must-have for any home gym.

G
Greg

I've had these for 2 years now and they are superb.
Easy to adjust and they feel bloody awesome in the hand.
Great kit which will last a lifetime and beyond.
Rock solid. The duck's nuts of DBs.

R
Reviewer

Even though I couldn't try out the Ironmasters before purchasing them I am glad I went with them. I did my research (youtube reviews) and also tried out the Powerblocks and Bowflex adjustable dumbbells at a local sports store. Even though I couldn't try out the Ironmasters before purchasing them I am glad I went with them. I agree these are not quick enough to do drop sets with. I haven't had much practice with them(couple weeks) and it takes me about 25-30 seconds to change both dumbbells to a different weight, but that is fast enough for me between exercises since I am OK with a 30 second rest period. I have had the traditional **** on type adjustable before and they always came loose very quickly. I have not had these come loose on me once, same as many other people have stated. If they did begin to rattle they won't fall apart unless the threads line up with the slot(think of a skeleton key). I can tell these will last forever, which I doubted with the Powerblocks and Bowflex dumbbells which had a cheap feel to them. Buy these if you care more about quality and less about speed. If you want speed I would recommend buying a set of multiple dumbbells, although pricier. Those would be worth your money versus going with Powerblocks or Bowflex dumbbells.

R
Reviewer

These dumbbells work great.
Not as fast or easy to change weight as others, but they feel just like a standard fixed weight dumbbell. Glad I bought these over the other choices.

R
Reviewer

These seem like a great place to start.
Okay I haven't tried any other adjustable weights except trusty old spin locks so I cannot compare the time it takes to change the weight. However I will say that I am already able to change these things really quickly and with time this should only improve. The 2.5 increment is also a superb feature and it is so nice to be able to add or subtract the weight with what is effectively a turn of a ****. Everything about the weights is well made and designed and they feel really comfortable. I have been eying up ironmaster weights for some time but the $600+ price tag of the 75 lbs dumbbells was a hard pill to swallow. These weights can also be expanded up to 75 lbs and beyond so for me this was the perfect way into getting a really great set up.

R
Reviewer

They're priceless to me.
This truly exceeded my expectations and well worth the expense to me. The quality is outstanding and time for plate changes just a brief pause in whatever you're doing with them. I can't imagine anyone with a drive to exercise having an issue with a quarter turn and quick switch to have something durable of quality that can't fail or wear out over time ?

As a followup to the above... I've recently added Ironmaster's 1.5" fat grip adapters to the set and I love them. I also added Ironmaster's quick-lock Kettlebell and loving it too : )

R
Reviewer

Still the best of the lot. As I am rehabbing from shoulder surgery, I decided to purchase the 45 lb Ironmaster set. I have had the heavier set in the past but am always looking to try new things, so they were sold a couple years ago. I regret doing that as my workouts have evolved such that 90% of my workouts involve dumbbells or body weight work. So, I knew I needed something that would last a very long time and I really dislike any sloppy feeling with dumbbells (ie I want it to feel like one solid piece). Having been through every type of adjustable dumbbell over the past 15 years, I knew the ironmasters were the only adjustable that would fit my criteria. There is no difference with this set versus the 75 ib set except the stand is not included, there is (obviously) less weight, and they are cheaper. For those that don't need more than 45 lbs, these fit the bill. For those like myself that will be wanting more weight, these can be expanded to 75 lbs, 120 lbs, or even beyond that. The only other dumbbell I would ever consider are the Powerblocks, but having owned a few pairs of them, I knew the one thing that always turned me off was the ever shifting of the plates when doing certain lifts. For some this is a non issue. Those looking for an adjustable dumbbell that can essentially be made into a solid dumbbell of any weight will find the answer with the Ironmasters.

R
Reviewer

Solid quality, and convenient space aver for the office. I keep one of these in the office and one at home. At office it works well as a substitute to coffee and sugar. If I get drowsy from being a desk jockey, I just push a few reps. Excellent solid quality. IMO: It costs a pretty penny, but I believe in only having to buy something once, and this fits the bill. Very quick changing of weights. Many of my office mates stop by my office to use it.

QUICK-LOCK DUMBBELL SET 45 LBS (20 KG)
QUICK-LOCK DUMBBELL SET 45 LBS (20 KG)
Regular price £449.00 GBP
Regular price £519.00 GBP Sale price £449.00 GBP