HOSALI 2.5 inch Office Chair Gas Lift Cylinder-Office Chair Replacement Parts, Heavy-Duty Gas Lift Cylinder Fits Most Chairs,Highest End Class 4 Hydraulic Pneumatic Piston,Universal Size

This replacement cylinder is a beast—strong, sturdy, and a great value for the price. It was easy to install and instantly made my chair feel more solid and secure. The product claims to hold up to 1000 pounds, and it really does feel that strong. No wobble, no slow sinking over time like my old one. My wife comes into my office and i'm not worried to have her hop onto my lap. That said, I made the mistake of not measuring beforehand. I was using this on a Lazyboy executive chair, and the new lift was taller than expected. Now my knees bump into the underside of the desk, which was on me for not double-checking specs. I’ve since ordered a shorter one, but I’m saving this for another chair because the quality is excellent. If you need a tall, heavy-duty gas lift and have the space for it, this is a solid choice. Just be sure to measure your setup first!

Worked well without any crazy tools, basically I was able to use a metal hammer to remove both pieces of the piston before reinstalling the new one. The first thing you do is go ahead and lay the chair down to have access to the underside of the feet, then with your hammer you would need to take a series of firm hits to the bottom of the broken cylinder that will eventually free it from the base. Once you remove the cylinder from the base there's a chance that the actual piston that's connected to the bottom of the chair will still be attached, from there you would hit the piston from the side with a downward force and then the underside with the upward force and that will loosen the friction lock and it will pull right out. Once you get that to reinstall the new piston is easy drop the bottom into the wheel section of the chair pull off the access cap for the piston and put your old chair back on the new piston and carefully sit on the chair and you have created the friction lock and it is ready to go. I have the GT racing Ace chair series and this cylinder worked great, it gave me extra height but will adjust to the lowest position if needed and I wouldn't worry about colors because if you reuse the cylinder cover then you won't see if you purchased a silver or black piston so save yourself a couple bucks.

After secret lab customer support left me high and dry I had to turn to other options. Many of the cylinders on here are way too tall and I had to return another for that reason, but this one seems perfect! Restored my chair to full functionality.

Nice heavy duty and easy to install. The 1 star missing is my fault for not measuring but made chair bar height

This is a PERFECT replacement cartridge for my office chair. I thought I would have to buy a whole new chair, but with this cartridge, it's like new! Super easy to replace and it lifts even higher than my old cartridge. I would have no problem buying this again if needed.

This was super easy to install, and it saved me from buying a new chair. The chair no longer sinks when I sit in it.

It seems about every 4 years I find myself replacing my office chair and mostly because of gas cylinder going bad. After watching multiple videos I ordered this. The bottom came apart easily but the top took some coaxing with hammer, punch and vise. 15mins and my chair is like NEW and I saved $100+ and the hassle of disposal of chair. Thanks!

Pretty much as the title says: thin rod, too much play side to side. Fitment was fine, appearance great, it has a rather tall throw, which is OK for me (6'2" tall), but less so for my wife (5' tall, her feet don't rest on the ground, when the piston is fully compressed). I'm heavy, about 270 lbs, but no, I don't weight anywhere near the maximum rating of 1000 pounds (where did they get that figure from?!). The chair is a good, solid, 25 year old office chair, which though it squeaked, was still rock solid. The left to right, and back to front “rocking” play in this new piston is unnerving. I'm not trashing the product, I'll give it 3 stars, and of course I can't speak to the durability or reliability, only time will tell. Perhaps for a lighter person, this would be an excellent replacement chair piston. But again, they advertised “1000 pounds”; what did that mean? Disappointed. I need a second piston for another chair, and so this product was an audition for the next purchase. Now, I'll have to look elsewhere.

Sin duda es el mejor cilindro de gas que he comprado, tenia uno que venia con mi silla gamer y que se descompuso (deja de subir el cilindro y se bajaba solo) Y compré este en su lugar. Antes que nada es mucho mas alto que los estándares y el recorrido que hace el cilindro al extenderse te da una altura mayor que a la de cualquier silla. Hasta ahora me ha servido y aguantada. Es muy resistente y si soporta el peso que dice. Por lo menos hasta donde yo se cerca de unos 150 kilogramos. Sin duda lo recomiendo y lo volvería a comprar. Además vienen de regalo unos guantes blancos de trabajo. Qué mas puedes pedir.

Give it ever medal known to man kind for being able to hold up a chair under an obese person. No seriously, DO IT.

Je l'ai commandé, par ce qu'il avait les dimensions que j'ai mesurés sur l'ancien. Mais finalement j'aurais été mieux de commander un plus long. Mis a jour de l'évaluation: Après seulement 3 mois, le vérin ne garde plus ça position.

Ha...my chair stays up now,item as promised

Easy to install, and works very well.