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DOZYANT

DOZYANT Gas Lift Cylinder Replacement,Hydraulic Pneumatic Shock Piston Heavy Duty (450 lbs) Universal Size Fits Most Executive Office Chairs, Highest End Class 4

  • Based on 7,740 reviews
Condition: New
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Availability: In Stock.
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Arrives Wednesday, Jul 22
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Size: 5 inch


Features

  • HEAVY DUTY Gas lift cylinder that holds great weights - tall center support column of the chair. Holds up to 450 lbs on most office, executive and computer chairs.Highest End Class 4 gas cylinder on market.
  • STANDARD CYLINDER DIAMETER: Outer cylinder: 2 inches, Inner cylinder: 1.1 inches. Please confirm the measurement before ordering.
  • SMOOTH & NOISELESS: Full 360 degree rotation, smooth and noiseless movements to all directions
  • 5 STROKE FOR ADJUSTING CHAIR HEIGHT: Minimum length: 10 inches; maximum length when fully extended: 15 inches; adjustable range: 5 inches
  • EASY INSTALLATION : Can be installed easily with no additional screws required.

Description

This replacement office chair gas lift cylinder is more heavy duty than standard chair gas lift cylinders. It's a great replacement option for damaged or worn out gas lifts on office chairs, task chairs, executive chairs, & more! While this gas cylinder will fit the majority of chairs and stools, it will not fit all. Please measure your original cylinder to be sure. Minimal dimensional differences shouldn't alter performance of lift when installed. Always remove gas cylinder with care and never heat or puncture.

Brand: DOZYANT


Color: Black


Material: Alloy Steel


Product Dimensions: 11"D x 8.6"W x 2"H


Size: 5 inch


Brand Name: DOZYANT


Additional Features: High Weight Capacity, Smooth Movement


Unit Count: 1.0 Count


Recommended Uses For Product: Office


Room Type: Office


Age Range Description: Adult


Included Components: 'Office Chair Gas Lift Cylinder'


Model Name: Gas Lift Cylinder, Office Chair Gas Lift Cylinder Replacement


Surface Recommendation: Hard Floor


Indoor Outdoor Usage: Indoor


Model Number: 120-TKee


UPC: 765673999159


Global Trade Identification Number: 59


Manufacturer: DOZYANT


Manufacturer Warranty Description: N.


Manufacturer Part Number: 120-QG


Item Type Name: Hydraulic Pneumatic Shock Piston Heavy Duty


Furniture Base Movement: Swivel


Reclining Position Count: 1


Tilting: No


Is Foldable: No


Color: Black


Back Style: Solid Back


Style Name: Formal


Pattern: Solid


Shape: cylinder


Arm Style: Armless


Leg Style: Straight Leg


Form Factor: 360


Item Dimensions D x W x H: 11"D x 8.6"W x 2"H


Size: 5 inch


Item Weight: 1.9 Pounds


Seat Height: 15 Inches


Seat Depth: 8.6 inches


Item Dimensions: 11 x 8.6 x 2 inches


Item Depth: 11 inches


Material Type: Alloy Steel


Frame Material Type: Alloy Steel


Product Care Instructions: Wipe Clean


Seat Material: Plastic


Fill Material: Plastic


Maximum Weight Recommendation: 450 Pounds


Assembly Instructions Description: Tip the chair onto its side. Use the rubber mallet to tap and remove the base of the chair away from the seat. Use the pipe wrench to clamp tightly onto the top of the cylinder. Twist and then pull up in order to remove the cylinder. Remove the orange cap of the new cylinder. Insert the bottom of the cylinder into the center of the chair base. Carefully lift both the chair base and the chair cylinder into the chair mechanism. The parts will then fasten on their own.


Required Assembly: Yes


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Jul 22

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Office Chair Savior – DOZYANT Gas Lift Cylinder!
Size: 5"STROKE
When the gas lift on my office chair started giving out, I was on the brink of buying a whole new chair. That’s when I stumbled upon the DOZYANT Gas Lift Cylinder, and I decided to give it a shot. This decision turned out to be a game changer! The installation process was incredibly easy, and it fit my executive chair like a glove, thanks to its universal size design. It's evident that this cylinder is built to last, supporting up to 450 lbs with a seamless and smooth operation, making it feel like I've got a brand new chair. The hydraulic pneumatic shock piston operates flawlessly, providing the perfect amount of lift and stability. What impressed me the most is how it has transformed my seating experience at work, ensuring comfort throughout my long hours at the desk. This product is a lifesaver for anyone looking to fix their office chair without breaking the bank. The DOZYANT Gas Lift Cylinder is a high-quality, durable solution that I would highly recommend to anyone facing similar chair woes. It’s truly a top-notch product and the highest end of its class! ... show more
Reviewed in the United States on October 29, 2023 by Stan Da Man
    • Makes my Aeron a usable height, installation can be tricky if you have an old chair
Size: 8 inch
This is a good cylinder and I love the height it adds. I viewed the installation instructions and watched some videos, but I did not have an easy time installing it because my chair was old, grimey and dusty. (The label on bottom said 2003) Tips if your chair is old like mine. 1. To get the existing cylinder out of the chair, you may need to whack it HARD. I used a 5lb sledge and a block of 2x4. Even then, it took SEVERAL hard whacks, putting all sorts of dents in the wood block. 2. Use an adjustable pipe wrench to unscrew the cylinder. The teeth on mine were leaving marks on old cylinder and it wouldn't budge. I eventually applied WD-40 at the top and that loosened it up enough to come off. There was a bunch of rust inside. 3. Once you install the new cylinder, you will have to pop off the plastic cover under the chair and adjust the set screw so it doesn't sag. After I did this, it worked perfectly. ... show more
Reviewed in the United States on December 27, 2024 by Andrew Purcell
    • Works as Adverstised: Just Get the Tools for the Installation.
Size: 6 inch
My [[ASIN: B009ZNEUOA HON Lota Mid-Back Work Chair]] from 2012 started sinking this year. By August the cylinder would no longer hold any height. Rest of the chair had been holding up for seven years through multiple moves so I wasn’t about to replace it all. I put up with the low seating until my neck and my hands started to complain. Okay, okay—time to swap out the cylinder instead of a whole new chair. The cylinder is packed in a plain brown box with no instructions or anything. It is mislabeled for the five-inch model but the Amazon customer questions show that this is indeed the six-inch job. That’s it—pull it out of the box and you only have everything else to do. Installing the new cylinder was easy. Only tricky part about that was lining the seat up with the post so the base plate would slip right over—took about a minute. It was getting the old cylinder out that took me more than an hour, if you count the trip into town for a wrench. Right away you will need the right tools for the job: 1. Pipe wrench with at least 14-inch handle. 2. Two or more clamps. 3. A work table or similarly study clamping station. 4. [[ASIN: B000F09CF4 Kroil, the oil that creeps!]] 5. A good metal hammer. The basic process is to pop the clip off the bottom of the old cylinder. This will allow the wheelbase and the bottom casing of the cylinder to separate from the rest of the chair. Some washers fell out of the bottom and the piston stuck out of the cylinder itself. Next, I had to remove the tilting base plate from the bottom of the seat. I had to do this after spending ten minutes trying to wrench the damn cylinder loose and only making gashes in the metal. For my Lota chair, I undid four hex bolts with a 3/16 hex wrench and pulled the plate clean off. Easy peasy. Then I added into the socket of the base plate some Kroil, the oil that creeps! Boy was that stuff slippery. The socket and cylinder were so tight I am not even sure the Kroil crept in there much. After that I clamped the plate down to a work table with a pair of strong C-clamps. It took a few minutes of adjustment to get them in place enough to keep the plate from twisting off the edge of the table. From there I ran into town and bought a 14-inch pipe wrench from Lowe’s. An extra 14 bucks. I recommend getting an even longer one for the leverage. Once clamped on, the wrench will slide one direction and dig in when pulled the other way. Pull with both hands, with all your might, in the biting direction. Just when you think that sucker isn’t going to come loose, be pleasantly relieved when the cylinder twists right out in one motion. At last, you’ll need to clamp your wheel base down and tap out the old cylinder bottom. In my case, the bottom was flush with the barrel of the base, so I couldn’t use a wide-face mallet, while my small rubber mallet was just too darn light. Finally, I took a good old fashioned steel hammer and with careful aim knocked it out in about six hard whacks. The finishing touch, before reassembling the whole chair with the new cylinder, was to add swap the original casters for rollerblade-style [[ASIN: B01CTIG4GE Heavy Duty Caster Wheels]] from Office Oasis, an office aftermarket supplier. They came five to a pack and roll more smoothly and swiftly than the OEM wheels. For final assembly, the new cylinder dropped into the wheel base nice as you please. Don’t forget to pull the purple safety cap off the top! This exposes the plunger that the chair base plate will tap whenever you pull the lever. Day one at least, my chair works immediately well with the new cylinder. Without sitting on the seat, I depressed the lever and let the chair raise to its full height. Now I sat down and adjusted down so my feet were just touching. This put my hands and my head at a more ergo-friendly posture. Overall I think it is a good idea, when you are replacing the cylinder, to go head and consider upgrading the casters, possibly even the whole wheelbase. Maybe get some coverings for the stems of the base as well to protect them from being marred by your shows and to help you lift off. ... show more
Reviewed in the United States on September 30, 2019 by Brian M. Ranzoni
    • Excellent item works very well easy to install Excellent item works very well easy to install
Size: 6 inch
Review Image by Art Farooqi
I have some very expensive office chairs, and the cylinder went bad on them. I did not want to spend several hundred dollars for a new chair and was researching replacement of the cylinder online, when I came across this excellent value and easy to replace cylinder for my chairs. Now my chairs function just like as if they were new and give all the proper support. These heavy duty cylinders work excellent because I’m a pretty big guy weighing about 300 pounds and they support my weight all day. ... show more
Reviewed in the United States on October 30, 2025 Reviewed in the United States on October 30, 2025 by Art Farooqi
    • Good product as the height adds comfort. The value is not just in the price but also the product.
Size: 8 inch
Take a look at this product, it is well worth the purchase. For a taller chair seat, this does the job. It was a better and more sturdy lift-tube than my old one. It put my feet, knees and hips in a more neutral position for better comfort. Less cramped = more Comfort. A word though: it is an easy install once the old one is removed. Removing the old lift-tube can be tough. ... show more
Reviewed in the United States on September 6, 2023 by C & S Ranch
    • Great Quality at this Price!
Size: 5"STROKE
Fit my Steelcase Amia, seems to be great quality and works perfectly!
Reviewed in the United States on May 8, 2026 by James in the Couv'
    • Exceptional Gaming Chair Gas Cylinder!
Size: 5"STROKE
Exceptional fits my GTPlayer Racing chair like a chair, slightly higher by lick and in or 2 but its easliy adjustable! Removing my old on was a pain but installion of this was a breeze. It lloks and feels strong, if there is no update, that means its still working great!
Reviewed in the United States on April 12, 2026 by Master o.
    • Order this with a new chair, not a replacement.
Size: 8 inch
I purchased it as a replacement to use in my 5-yr old Amazon Basics chair, but I could not get the old cylinder out, no matter how hard I tried and how many how-to videos I watched. I ordered a new chair, and used this when I assembled it. It works great. If you are tall, this makes the chair much more comfortable and usable. I am 6'2. Wish I knew these were available when I ordered my first chair 5 years ago. ... show more
Reviewed in the United States on May 26, 2026 by Joe W.

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