14 Inches-22 Inches Extra Long Gas Lift Cylinder Replacement, 8'' Stroke, Tall Hydraulic Pneumatic Shock Piston, Heavy Duty, Universal Fit for Drafting Chairs Bar Stools, Class 4 (Polished Steel)

Works fantastic, The fit was perfect. Easy to install

Cylinder fit perfect to existing desk chair. Modified to use with drafting table with addition of purchased foot rest. New chair works great as desk chair or drafting chair.

My office chair turned out to be a disappointment after the backrest wouldn't stay up due to the plastic turn knob not staying tight no matter what I did. Then when my chair started to lose its lift on a regular basis I thought I would have to buy a new chair. I would sit down at my desk and realize I was sitting at the same height as a child does. Sad, because my previous chair lasted about 18 years. When I discovered this gas lift cylinder replacement I thought it would be worth a try to mitigate the expense of a new chair. I took the measurements from my chair in regards to how far it lifted from where it bottomed out to where it extended to and determined the 4.5" stroke height was the one I needed. I didn't know what "stroke height" was but I figured it out. Once I received it, I needed to remove the old cylinder, which was the HARDEST part of the task. I removed one end with a few hardy smacks with a hammer as illustrated on YouTube. Additionally, after unsuccessfully removing the other end with a pipe wrench as instructed, I had to disassemble the chair's mechanism to dislodge the end of it that was completely stuck in the chair pan. It took some creativity to get it done, but after about an hour of trial and error I got the old one out. At that point installing this new cylinder was SUPER easy. It fit exactly like it was supposed to. The chair is fixed! And I even fixed the other problem of the backrest not staying in position after seeing a fix on YouTube while looking at videos for installing a new chair cylinder. Now my chair is actually better than it was to begin with. The chair is stable and raises and lowers well. I look forward to an uplifting experience from this point forward (pun intended). I would recommend this fix to anyone who wants to save $150-$200+ on a new chair.

I needed to raise my office chair so that top of desktop monitor was 2 inches below eye level. I replaced the cylinder on my office chair with the Tall Chair Cylinder and it easily achieves this and could go even higher if needed. It seems very sturdy and has maintained the height setting. Replacing a cylinder is fairly easy if you have the proper tools. I would not attempt without a cylinder removal tool. Here is a picture of the tool.

Removing the old cylinder necessitates the use of a hammer, wrench, lubricant, and potentially a vice to secure the chair legs during extraction. Significant force is required for removal. No instructions were included in the cylinder packaging, making it necessary to consult a YouTube video for guidance. The device appears to be functioning properly following installation.

Works great, just too bad I had to spend the extra money to give my favorite saddle stool the lift it needed for the best position given my height. You know how difficult it is finding the correct length cylinder??!! So happy to of found this and in black to match

I wanted to turn a really nice office chair into a counter stool for my mother. I realized that I needed to convert the wheels to stationary chair guides, and to buy a new gas cylinder that increased the max height of the chair. I actually did some measurements prior to purchasing this. Most office chairs have a maximum height of around 21-22 inches. My chair had a max height of 23.5 inches, but I still needed higher. And I later learned that I would need to account for the "plushiness" of the cushion, compared to a firmer bar stool type chair, as the cushion would sink in an inch after you were sitting in it. I was weary about how long these things last, so I tried to buy the exact size where the minimum setting was high enough to not require it to be lifted at all. So I originally bought the 8 inch lift gas cylinder. At it's minimum height, this made the chair like 27 inches high, which was too high for my needs. I ended up exchanging the 8 inch one for this 4 inch gas lift that was slightly too short, but only required a tiny bit of lift. And for the price these cost, I'm no longer worried about them not lasting for years. I can just buy another one. Installation was easy, because it was a relatively new chair. I recommend you take the wheel base off first. So place your chair probably head down, ideally on some carpet, fully exposing all wheels in the air. Then get a rubber mallet and hit against the gas lift bottom while pulling on the wheel base, and eventually the base will come off. Then get a pipe wrench or some kind of wrench with a wide enough opening, and turn it the lift cylinder to the left. Mine came off relatively easily. The whole process probably took less than 5 minutes which surprised me cuz some people say it takes like an hour of banging. My original chair piston was not broken, so I wanted to preserve it the best I could. Some say you can protect it from scratches if you put like a rag in between, but in my opinion, that's not feasible because it'll just cause the wrench to spin. I removed the old piston the best I could, but there are pipe wrench marks on it. I wanted to keep it because not only is it still good, but if I ever wanted to turn it back into a regular chair I could. Only had it about a couple of weeks, but so far so good. You're apparently suppose to go up and down on the cylinder every week or so to keep the piston lubed, but I've never done that, and most people probably don't once they find the ideal height. But that's what you're suppose to do for maintenance. I'll reiterate that I do believe this may make your chair taller than it was before on it's lowest setting, and has the range to make it much taller (drafting chair height) if desired. I've never had an issue with these before, because I always sit at the lowest setting which is around 17 inches on most chairs.

Great replacement cylinder! The size was spot-on, installation was straightforward, and it brought my chair right back to the height and stability it originally had. Smooth lift, solid feel, and no sinking issues at all. Exactly what I needed highly recommend if you’re repairing or upgrading an office chair.

Es funcional, es lo que requeria

Fits perfectly!

Very well made. Super sturdy.

fonctionne très bien, remplacement de mon ancien défectueux,facile a changer mais avec le matériel adéquat et un peu d'huiles de coude pour le reste conforme a met attente. je recommande.

Super Gasdruckfeder, hält top. Für meine 1,90 Meter brauchte ich eine extra lange Feder, daher die 437mm Version. Mehr als ausreichend. Selbst für 2 Meter-Menschen sollte es mehr als genug Hub sein um korrekt und ergonomisch zu sitzen. Verwirrend in der Beschreibung hier ist die 450lbs Tragkraft. Dies entspricht ungefähr 204kg, nicht wie in der Beschreibung 450kg. Gleichzeitig wird aber auf Kolben Klasse 4 verwiesen, die ist eigentlich auf 1000lbs normiert was 450kg entspricht. Im Zweifelsfall würde ich mal von 200kg ausgehen. Die Feder reicht also locker für etwas stämmigere Menschen oder auch um eventuell eine Gasdruckfeder die etwas unterdimensioniert ist zu ersetzen. Falls man mehr als 200kg wiegen sollte würde ich vorher beim Hersteller nachfragen. Jedenfalls kann ich die Gasdruckfeder wärmstens empfehlen. Passt wunderbar in Standard Büro und Gamingstühle. HINWEIS: Ich würde jedem empfehlen unbedingt vorher zu testen ob man die alte Gasdruckfeder rausbekommt (bevor man bestellt). Es gibt zwar zig Tutorials und YouTube Videos die zeigen wie man das macht und wie "einfach" das ist. Bisschen WD40 Spray und dreimal Klopfen und schon ist die alte Feder draußen. Nene... Vor allem wenn man einen älteren, etwas "eingesessenen" Stuhl hat (mein Gaming Stuhl zum Beispiel) ist es alles andere als einfach. Habe über ne Stunde rumgeklopft und Gewalt angewendet Hammer, Rohrzange etc. Da war nix zu wollen. Letztlich hat mir ein Kollege in der Firma (erfahrener Schlosser) die Feder mit exzellentem Werkzeug und Geschick heraus bekommen. Ist wirklich alles andere als einfach, deshalb: Erst ausprobieren!