I love them...I was just on my way out for some clean & jerks actually. The adjustments are easy and quick which is great while training other people. In fact it's the best equipment purchase I've made in along time...I'm so glad I did not go with an imposter kettlestack. Anyway it's exceeded my expectations and I'm very happy. KK, Ohio
They came on Friday..and work great!Thanks,superproduct. MB,Andover,MN
I have worked with a wide variety of solid kettlebells. Most of them have come out of Russia, but I have also trained with Polish, Hungarian, and Czech variations in addition to kettlebells produced in England and Germany. The one thing that I appreciate the most about kettlestacks (adjustable kettlebells) is the greater distance between the portion of the handle which you grip and the core. This distance is greater than any of the bells I have worked with so far, and means that there is no danger of having to let the wrist fall back even the slightest bit to avoid the ball (core) hitting the back of the wrist. With the stacks, you can even flex your wrist slightly forward and the core will still be on your forearm where it belongs, and not your wrist. In addition to that, the stability of a k-stack is superb, and adjusting weight is easy. Instead of having 12 kettlebells filling my living room, I could have two k-stack handles and a pile of plates and be good to go. Kettlestacks cover the spectrum from 10 kg to 48 kg (less than 1 pood all the way to 3 pood) quite perfectly as well.Excellent product, and excellent product knowledge from the provider!Highly recommended. MB,Germany(fka mxkettlebell.de)
I liked my first two (kettlestack kettlebells) so much that I am buying two more. Great product. (CA , Texas, 1 mnth after 1st)
My pair of kettlestacks has served me fine for several months now on my "fitness path",I'm fitter than I've ever been!
You guys have been helpful every time I asked a question. Now, I see these other forums where people put the Kettlestack down, and I don't understand what's going on. Who are these people ?
The main advantage I see from adjustable kettlebells is "price", in a sense of the word. I have four kettlestacks (www.kettlestacks.com) and they function as a complete set of kettlebells from 10lbs up to >100lbs. Some people will say there is an advantage to progression, and that the large jumps in traditional sizes are a disadvantage, but I don't see that as an issue, for the most part. Varying the resistance by varying the sets reps works just fine.
Price flexibility is the big deal to me. Depending on how I want to work that day, I can adjust the kettlestacks to what I want to do (it's easy, doesn't take much time at all). For example, any given workout I can use (2) 1-pood, and (1) 1.5-pood and (1) 2-pood, or any other combination of the above, or go higher or lower than the above in any combination. Buying the four stacks and all the standard plates set me back around $300, but I have a complete set of kettle bells, 1, 1.5, 2 and >2 KB's. I agree with an earlier post about not throwing adj KB's. That's a disadvantage if and only if you plan to do throwing movements. Also, I can use my std plates that I bought for my kb's for my std dumbells.
As for the type of adj kb's, I looked into many and settled on the kettle stacks as my choice. I called and talked personally to USA Ketlebells and kettlestacks and was just more comfortable with the durability of the stacks, but they were both helpful and very polite.
The only thing I can't comment on is the "feel". That's a bit esoteric to me anyway. I get a great workout with the adjustables, and thats what I want. The only real reason I want to someday purchase dragon doors is to support what I think is a fine institution. But for me, I couldn't afford the full set yet, and I'm sure Pavel would rather have me working out with adj kb's than waiting to buy his, especially since I suppory DD by buying his books and DVD's.
Good luck, you can't really go wrong so long as you start with something.
(anon)
I bought your Kettlestacks a few weeks ago. My fiance and I have been using them for the last few weeks and we both have had excellent results so far. We both like the ability to add weight incrementally as our skills and strength progress. Your product is exactly as advertised. Thanks for making such a fine product. MH, Florida
I didn't know about you guys before I bought a 35 for my first KB.
Presses were ok at first but they are getting too easy and swings were too easy from the start.
The forums suggested what my next kettlebell should be and some harder press moves, but I got off that train, purchased your product and can now focus on training instead of saving up for the next weight kettlebell. The kettlestack is a great product wish I knew about it sooner. PD
I have always enjoyed doing snatches and cleans and the kettlebell versions are quite explosive, closer to competitive movements than I have felt with pulling and pushing barbells and dumbbells. It (kettlestacks) is an amazing supplement to the practical old school barbell and dumbbell exercises that wrestlers, field athletes have always incorporated into their training. The thick handles are a bonus for gripping strength, no straps needed here.
Varying the weight is very fast and simple as you advertised and there is no worrying about anything breaking on a missed pull or push. I controlled dropped a 105 pound one arm repetitive kettlebell clean on a missed 4th set. No damage, no problem, Next set, all set to go. My friend spent a couple of hundred dollars for a set of quick change dumbbells and they are not made to be dropped at all. Let's just say he is lucky that his father is a welder.
No adjustable dumbbells on the market today with cheap plastic parts can match these tough kettlebell handles using solid steel plates.. Simple, tough and practical. Who could ask for more? Undersold is an UNDERSTATEMENT on your marketing. I have the Mike Mahler kettlebell DVD . The Kettlestack kettlebell handles and his DVD are a killer combination. DW British Columbia, Canada
Hi, thanks for checking in (16 months later!). It's funny that I heard from you just now, as I was thinking the other day that I must order another Kettlestack. The other one's going great, but I'm planning on getting another to tackle some of those two-bell exercises. I'll probably put in an order in the next couple of weeks [closer to my payday :)] JM , New Zealand
A customer asks:
"I am trying to decide which type of handle(s) to purchase and if I should just get one or two. I will be a beginner to kettlebells (but I have been lifting for 20 years) so I assume I should start out at 1 pood per kettle and work my way up. If I get the "High" handle so that I can just buy one set and be good for life will I need a lot of foam spacers to use just 1 pood? Other than front squatsa, are there many exercises that require two kettlebells at once? Thanks in advance."
Hi Everyone !
Our updated product line still has a base, mid, and high option but things have changed!!! More kettlebell stuff . . .
Hello,
I recieved the kettlestack this afternoon...I love this thing...I'm having trouble thinking of functional differences between an actual kettlebell and it...real well made product...
I had a quick question regarding storage though...should I loosen the bolts or even undo the whole setup every night for longevity (of the kettlestack) purposes?
Thank You
RJ

Here are some updated hardware pictures of the new (now over a year old) kettlestack design; 1/2"x13 hardened Grade 8 hardware and rockwell 52 hardened steel support straps:

(mid hardware shown has some extra bolts)
More kettlebell stuff . . .
These things look like a great idea, but I've seen some posts about how they rattle,
That wouldn't be safe. What do you say about rattling ?
i, thanks very much for the quick reply back to me. thats great news that you gave me. Sorry to continue with the questions but i have a couple more.
i only have Olympic plates (like the 10kg, 5kg, 2.5kg and 1.25kg) does your product fit olympic plates or is it just for weider plates with the smaller holes? More kettlebell stuff . . .
Hello everyone - - I've never used kettlebells before but would like to try them out. After reading over this website the Kettlestack seems like a good way to go since it is very versatile and expandable (and I have lots of weight plates). My question is - - what handle would be best for me to get ? More kettlebell stuff . . .