I bought the LIONSCOOL KAIROS – the latest version of this machine – directly from Amazon.de for €460. The version available there is completely black, giving it a clean and understated look. I would also have liked the red model advertised on the manufacturer's website, but that version was not available on Amazon.de.
After assembling and using it for my first training sessions, I am very satisfied with the machine. It offers a lot for the price.
Assembly and build quality
The assembly instructions are clear and easy to follow. All steps are explained correctly, with no ambiguity. All necessary tools and hardware are included. Anyone who has assembled fitness equipment before should have no trouble putting it together.
The leg roller is exceptionally thickly padded. The padding is firm rather than soft, but always comfortable during training. Both the leg extension and leg curl operate quietly and smoothly.
Leg extension
One of the biggest strengths is the large range of motion. In the starting position, the leg roller sits well underneath the seat, allowing for a very deep stretch. The backrest also has two positions: upright and slightly reclined. The reclined position allows for a particularly deep quadriceps stretch.
I am 1.78 m tall, and the machine fits me very well. The adjustment range is generous, so I would expect users around 10 cm shorter or taller to fit comfortably too.
Leg curl and resistance curve
The leg curl also operates very smoothly. I leave the roller free-moving for both exercises rather than using the locking pin. This allows it to adjust naturally to the position of my legs during the movement.
Unlike many inexpensive lever machines, the KAIROS provides noticeable resistance right from the beginning of the movement. You do not have to travel through a large part of the range before the load really kicks in. Towards the end of the movement, however, resistance tends to decrease, particularly during leg curls.
The attachment points for resistance bands offer a useful way to compensate for this. Towards the end of the movement, the band becomes more stretched and pulls the leg roller back, adding tension in that part of the range. There are two hooks for resistance bands. I am not entirely sure why both are needed, but the additional option is useful.
Adjustments and practical details
The handles are very well positioned for both exercises and make it easy to brace yourself during training. Overall, the ergonomics feel very well thought out.
There are three resistance ratios: 1.0x, 1.1x and 1.2x. This is a nice feature in principle, although I find its practical usefulness rather limited. I permanently use the 1.2x setting because it feels the heaviest and requires fewer weight plates. However, changing the ratio requires removing all the weight plates first. Other manufacturers offer much more convenient and practical adjustment systems. In reality, you simply choose your preferred ratio once and leave it there. So it is more of a nice extra – better to have it than not – but not a feature I would really miss.
The weight loading peg is angled slightly upwards, which keeps the plates securely in place. I do not need an additional locking collar.
Switching between seated and lying leg curl is also very straightforward. Simply loosen the screw underneath the seat by one or two turns, pull back the pin, reposition the backrest and let the pin engage again. There is no need to remove the pin completely. The whole process takes just a few seconds.
One minor drawback
The backrest assembly feels a little wobbly when getting onto the machine or before you are properly positioned. This is presumably related to the adjustment mechanism. Once you are seated or lying down and applying pressure, however, everything feels absolutely stable. It does not bother me during training.
I cannot comment on long-term durability yet, and I have not tested the machine anywhere near its limits.
Conclusion
For the €460 I paid, I find it very difficult to recommend anything better. At a sale price of around €399, it would be an outstanding deal.
The KAIROS offers a very good range of motion, smooth operation, thoughtful ergonomics and useful adjustment options. It is not completely perfect, but its minor shortcomings are easy to accept at this price.
I am very happy with the purchase and would buy it again.
Broke 8 reps in, cable snapped immediately, cannot wait to return this thing , replacement parts are taking forever, also the seat was missing the internal threads so it cannot even be mounted.
I am more than impressed with this machine. Instantly turned into my favorite home gym piece as well as most used. So happy I bit the bullet and went with this 3 in 1!!
The black and gold combo caught my attention. Love the size, quality, & color. I can fit it in my car’s trunk and backseat. Recommend putting the weights on the floor. Easy with the quick release. I do 1 -3 sets of 15-20 3 different movements almost every stop. Make time not excuses. Very satisfying with the way it’s packed for too.
Perfect. Good weight ratios. Easy to assemble. Worth it.
Did quite a bit of research. This seemed economic and functional at the same time. Took 2 hours to assemble, 1 person, straightforward instructions. Smooth operating plan, hits the motion of the exercise perfect. Very satisfied!!!!
Absolutely fantastic machine, huge add to my home gym, do your homework, this unit is the one. Very happy with my purchase
I just put this machine together today, 9/5/26, & absolutely love it! I’m 5’4” and am able to do all exercises very comfortably. My son is 6’ and has the same ease! The instructions putting it together was incredibly easy as well. I’m excited I bought this amazing combo!
Overall, this a solid residential machine that operates as advertised, and is functional for our needs that should serve us for a long time.
Putting the machine together was relatively straightforward and instructions were easy to follow. Mine was missing a couple of bolts, but I was impatient and just went to the store and grabbed them (8 bucks). Although, I'm sure if I would have reached out Lionscool would have taken care of it. Use an impact drill and/or rachet as it will make life easier. Took about 1.5hrs and I'm pretty handy, but wouldn't be too difficult for anyone able bodied.
Functionality...for reference, I'm 6'2/250lb and my youngest son is 6'/ 180lb. Hacksquat is comfortable both top to bottom, although getting on/off of the machine is a bit awkward. Its a combo machine so its expected. Just takes getting used to it guess. Large adjustable foot plate, which is great.
Legpress...getting in/out is a little awkward, but again its a combo machine and will just take some time getting used to. Foot plate is big enough, and the adjustability for ankles is a nice touch. Iso movement is different at the 45 degree angle, but I like it overall. Locking the footplate together works, but under heavier loads (3+ plates) I noticed the footplate separates as it comes down. This seems like a wear point over time. Maybe a simple "locking" mechanism at the top to prevent that give point to prevent stress under a heavier load could mitigate this issue.
Only had about a dozen workouts overall, and satisfied to this point. Time will tell, but I can't imagine my opinion will change much as this machine is pretty well built for residential use. Worth the investment especially compared to other similar products on the market.
This has been a great piece of equipment to add to the home gym. It did take some time to put together but well worth it with the low cost. I would recommend this to anyone looking to add additional leg machine to the gym.
Recently received the machine, and have been using it for the last two weeks. Overall, for the budget price, it really is better than I expected honestly. The few things that I’ll list as shortcomings really aren’t major issues, and definitely not something I would complain about considering the price. The overall functionality and smoothness of the machine are outstanding. I’m 6’2” and have no issues getting to depth at hack squat or pressing. That being said, the three things I see for improvement are:
the safety rails. One of the few things that feel cheap on the machine.
The coating/paint scratches really easily. The area to Chang the angle of the foot plates, and where the safety rails catch the weight are already scratched up pretty good. I’m not one that cares too much about appearance, but thought it was worth mentioning
My biggest complaint is the handles that you hold while hack squatting. There should be another bolt at the top of them. It’s fine while hack squatting and you’re pressing up on them, but when getting out of the machine, if you’re pressing down on them, the metal is thin and will bend.
A budget equipment that feels and performs like the others costing twice as much ! Would definitely recommend.
Lionscool just went way overboard to make things right. I had contacted them for help with the knee extension machine on which the leg roller had gone a bit cattywampus. After some back and forth emails, we just got things completely taken care of. They care about the product they’re selling and they care about their reputation for quality service.
The machine is a really solid product. The range of motion is good on both knee extensions and ham curls. I have a home gym in which we host a weekly fellowship for young men and their dads. The addition of the leg extension has been a nice complement to all the squats and deadlifts they do. Ham curls are like tonic after deadlifts!
Excellent machine that provides a very stable frame for both exercises. Additionally, the strength curve, enhanced by the cable feature, provides an excellent tension consistency. The instructions were simple to follow. Overall, the excellent buyer experience combined with the quality of the machine allows me to readily recommend this to any interested in a low footprint, high leverage addition to any gym.
Absolutely hands down one of the best home gym equipment pieces I have purchased. I feel like I just started working out again and I am a seasoned lifter
I watched a ton of reviews. The machine is living up to its hype. One of my concerns was being 6’2” as I saw some short people reviewing it, and it made me question whether my feet would hit the ground. I’m having no problems with my height at all or my freakishly long ostrich legs. I sometimes bottom out the range of motion on curls. I don’t think it’s a dealbreaker, but hopefully something I can find tune with adjustments.
Following up on my 5/6 review. I jerry-rigged the machine to add two vertical grips on top of the thigh pad holder (see pics), using a pair of M10 Auxiliary Side Handles, you can buy on Amazon, and a pair of M10 threaded rods, black coupling nuts and black washers, you can get from any hardware store, for around $20. Why can’t Lionscool just include something like that out of the box?
I think my seat weld maybe off a bit. Seems to be made well other than my issue. I’ll see if customer service can assist
I would classify this machine as a commercial home gym machine. Thats how good it is. Would be cool to have clamps to prevent weight plates from sliding potentially off
For the price extremely happy resistance and feel of unit.
This machine is great! Excellent range of motion, resistance remains the same throughout the entire movement, and easy to adjust. There are a couple of minor things that could make this machine even better for me — a larger back pad and different placement of the support bar underneath the seat for even better leg extension ROM. The assembly instructions were fairly easy to follow but there were a couple of inaccuracies involving wrong bolt sizes. This machine is definitely worth the money and I highly recommend it!
This machine is amazing quality, especially at this price point. It was easy to put together, works very well and is versatile. Also, I had a small delivery issue and customer service handled it super quickly.
Quick shipping! Easy to assemble and Over all great product! Great addition to my small home gym!
Great leg extension / curl machine for the price. The range of motion is excellent, the resistance curve is perfect, and the build quality is solid and stable. Honestly, you won’t find anything better in this price range. Highly recommend.
