---
product_id: 139339366
title: "6\" Long Stroke Office Chair Gas Lift Cylinder Replacement,Hydraulic Pneumatic Shock Piston Heavy Duty (450 lbs) for Tall Person Universal Size Fits Most Executive Chairs, Highest End Class 4"
brand: "dozyant"
price: "€ 65.74"
currency: EUR
in_stock: true
reviews_count: 6
url: https://www.desertcart.gr/products/139339366-6-long-stroke-office-chair-gas-lift-cylinder-replacement-hydraulic
store_origin: GR
region: Greece
---

# 450 lbs heavy-duty capacity 6-inch adjustable stroke Smooth & noiseless 360° rotation 6" Long Stroke Office Chair Gas Lift Cylinder Replacement,Hydraulic Pneumatic Shock Piston Heavy Duty (450 lbs) for Tall Person Universal Size Fits Most Executive Chairs, Highest End Class 4

**Brand:** dozyant
**Price:** € 65.74
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your workspace with heavy-duty comfort and precision!

## Quick Answers

- **What is this?** 6" Long Stroke Office Chair Gas Lift Cylinder Replacement,Hydraulic Pneumatic Shock Piston Heavy Duty (450 lbs) for Tall Person Universal Size Fits Most Executive Chairs, Highest End Class 4 by dozyant
- **How much does it cost?** € 65.74 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/139339366-6-long-stroke-office-chair-gas-lift-cylinder-replacement-hydraulic)

## Best For

- dozyant enthusiasts

## Why This Product

- Trusted dozyant brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Seamless 360° Movement:** Experience whisper-quiet, smooth swiveling that keeps your workflow uninterrupted.
- • **Durable Alloy Steel Build:** Premium materials ensure long-lasting performance and stability for your daily grind.
- • **Effortless Height Control:** 6-inch stroke lets you customize your chair height for perfect ergonomic alignment.
- • **Universal Fit, Zero Hassle:** Standard 2-inch diameter fits most office chairs with easy, screw-free installation.
- • **Built to Support Power Users:** Class 4 gas lift cylinder engineered to hold up to 450 lbs—ideal for tall professionals and executive chairs.

## Overview

The DOZYANT 6" Long Stroke Gas Lift Cylinder is a premium Class 4 hydraulic piston designed for office chairs, offering a 6-inch adjustable height range and supporting up to 450 lbs. Its smooth, noiseless 360-degree rotation and universal 2-inch diameter make it an easy, durable upgrade for most executive and computer chairs.

## Description

DOZYANT 6" Long Stroke Office Chair Gas Lift Cylinder Replacement,Hydraulic Pneumatic Shock Piston Heavy Duty (450 lbs) for Tall Person Universal Size Fits Most Executive Chairs, Highest End Class 4

## Features

- 6" STROKE FOR ADJUSTING CHAIR HEIGHT: Minimum length: 11.2 inches; maximum length when fully extended: 17.2 inches; adjustable range: 6 inches
- 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
- EASY INSTALLATION : Can be installed easily with no additional screws required.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | DOZYANT |
| Color | Black |
| Product Dimensions | 11"D x 2"W x 2"H |
| Back Style | Solid Back |
| Special Feature | Heavy Duty |
| Product Care Instructions | Wipe Clean |
| Unit Count | 1 Count |
| Recommended Uses For Product | Office |
| Maximum Weight Recommendation | 450 Pounds |
| Pattern | Solid |
| Room Type | Office |
| Age Range (Description) | Adult |
| Included Components | No components included |
| Arm Style | Armless |
| Surface Recommendation | Hard Floor |
| Furniture base movement | Swivel |
| Indoor/Outdoor Usage | Indoor |
| Reclining Position Count | 1 |
| Tilting | Yes |
| Is Foldable | No |
| UPC | 765673999173 |
| Global Trade Identification Number | 00765673999173 |
| Form Factor | Recliner |
| Manufacturer | DOZYANT |
| Item Weight | 1.9 pounds |
| Item model number | 140-QG |
| Is Discontinued By Manufacturer | No |
| Material Type | Alloy Steel |
| Manufacturer Part Number | 140-QG |

## Product Details

- **Brand:** DOZYANT
- **Color:** Black
- **Product Dimensions:** 11"D x 2"W x 2"H
- **Back Style:** Solid Back
- **Special Feature:** Heavy Duty

## Images

![6" Long Stroke Office Chair Gas Lift Cylinder Replacement,Hydraulic Pneumatic Shock Piston Heavy Duty (450 lbs) for Tall Person Universal Size Fits Most Executive Chairs, Highest End Class 4 - Image 1](https://m.media-amazon.com/images/I/71RmMOPGxHL.jpg)

## Questions & Answers

**Q: will this fit yamasoro chairs?**
A: Yes.  I used it on my Yamamoto because the one which came with the chair was not high enough.

**Q: Not compressing even with 200-lbs in the chair. Actuator is engaging top button. Cap removed. Any ideas?**
A: when empty, chair should go all the way up when you use the lever.  it should go down when you sit if you again use the lever.  if it is stuck at the top and u installed correctly then it must be defective.  it is a strong item and will not compress at all by just sitting w/out engaging the lever.  maybe lever is bent and not releasing air in lift which is of course how it would go down if its working properly.  my chair has been at the height i put it at since i installed the new lift—it hasn’t had to be readjusted a single time in months!

**Q: Does this 6” stroke version work better for Aeron Classic, or is the older 5" stroke model a better fit?**
A: Both fit the same, as both the bottom and top diameters are the same regardless of stroke. The only reason that I can see to change the stroke is to have a different height adjustment range, if the chair user was happy before I would use the cylinder with the same stroke length.

**Q: Will this fit a furmax office chair?**
A: If the piston size is standard, yes it will fit.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works as Adverstised: Just Get the Tools for the Installation.
*by B***I on September 30, 2019*

My 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. 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 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.

### ⭐⭐⭐⭐⭐ Great weight rating!
*by V***Z on September 2, 2025*

Fast delivery, works as advertised. Love the extra heights I get out this extended version and 450 lb rating helps greatly! Some difficulty ties removing the old one from my chair but I got her done. Very pleased with this item!

### ⭐⭐⭐⭐⭐ Universal fit - worked on my chair perfectly
*by E***M on August 3, 2025*

Fit my chair perfectly. Easy to install. Old cylinder can be very hard to remove but a monkey wrench works wonders.

## Frequently Bought Together

- DOZYANT 6" Long Stroke Office Chair Gas Lift Cylinder Replacement,Hydraulic Pneumatic Shock Piston Heavy Duty (450 lbs) for Tall Person Universal Size Fits Most Executive Chairs, Highest End Class 4
- DOZYANT 8" Long Stroke Office Chair Gas Lift Cylinder Replacement,Hydraulic Pneumatic Shock Piston Heavy Duty (450 lbs) for Tall Person Universal Size Fits Most Executive Chairs, Highest End Class 4

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-01-26*