---
product_id: 255929025
title: "8\" Chair Hydraulic Cylinder Replacement for Office Chair Gas Lift Cylinder | Universal Class 4 office chair gas lift cylinder replacement 450 lbs heavy duty piston fits most executive office desk chairs"
brand: "dozyant"
price: "$146.80"
currency: USD
in_stock: true
category: "Dozyant"
url: https://www.desertcart.us/products/255929025-8-chair-hydraulic-cylinder-replacement-for-office-chair-gas-lift
store_origin: US
region: United States of America
---

# 450 lbs heavy-duty capacity 8-inch adjustable stroke 360° smooth noiseless rotation 8" Chair Hydraulic Cylinder Replacement for Office Chair Gas Lift Cylinder | Universal Class 4 office chair gas lift cylinder replacement 450 lbs heavy duty piston fits most executive office desk chairs

**Brand:** dozyant
**Price:** $146.80
**Availability:** ✅ In Stock

## Summary

> 🪑 Elevate your workspace comfort—because your chair deserves an upgrade, not a replacement!

## Quick Answers

- **What is this?** 8" Chair Hydraulic Cylinder Replacement for Office Chair Gas Lift Cylinder | Universal Class 4 office chair gas lift cylinder replacement 450 lbs heavy duty piston fits most executive office desk chairs by dozyant
- **How much does it cost?** $146.80 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/255929025-8-chair-hydraulic-cylinder-replacement-for-office-chair-gas-lift)

## 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

- • **Built to Endure:** Supports up to 450 lbs with premium Class 4 gas lift technology—engineered for the busiest workdays.
- • **Whisper-Quiet Operation:** Experience smooth, noiseless 360-degree swivel motion that keeps your focus uninterrupted.
- • **Precision Fit Guaranteed:** Standard 2-inch outer and 1.1-inch inner diameter ensures perfect compatibility with most office chairs.
- • **DIY Friendly Installation:** No extra tools or screws needed—replace your chair’s gas lift cylinder in minutes and save big.
- • **Effortless Height Control:** Adjust your chair height seamlessly with a full 8-inch stroke for personalized comfort.

## Overview

This 8-inch hydraulic gas lift cylinder replacement is designed for office chairs, offering a robust 450 lbs weight capacity with a smooth, noiseless 360° swivel. Featuring a standard 2-inch outer and 1.1-inch inner diameter, it fits most office chairs and installs easily without extra hardware, making it the perfect upgrade to restore your chair’s height adjustment and durability.

## Description

Description: Frustrated to find that the office chair you sit on for years start sagging or can’t go up and down anymore? But not ready to buy a new one because the rest of the chair is in perfect shape? Why not get to fix it by changing the gas lift cylinder by yourself? How to make sure the gas lift cylinder fits your office chair? Check the outer and inner diameter of your broken gas lift cylinder. This replacement part fits the one with an outer diameter of 2" and inner diameter of 1.1". How to install the gas lift cylinder on your own? 1. Tip the chair onto its side. 2. Use the rubber mallet to tap and remove the base of the chair away from the seat. 3. Use the pipe wrench to clamp tightly onto the top of the cylinder. Twist and then pull up in order to remove the cylinder. 4. Remove the orange cap of the new cylinder. Insert the bottom of the cylinder into the center of the chair base. 5. Carefully lift both the chair base and the chair cylinder into the chair mechanism. The parts will then fasten on their own. Specifications: - Material: Steel - Outer Cylinder Diameter: 2" - Inner Cylinder Diameter: 1.1" - Stroke: 8" - Bearing Capacity: 450 lbs Package Content: - 1 Office Chair Gas Lift Cylinder

## Features

- 8" STROKE FOR ADJUSTING CHAIR HEIGHT: Minimum length: 11.2 inches; maximum length when fully extended: 22.5 inches; adjustable range: 8 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 |
|---------------|-------|
| ASIN | B085XK494H |
| Additional Features | Arm Rest |
| Age Range Description | Adult |
| Arm Style | Armless |
| Assembly Instructions Description | 1. Tilt the chair to the side. 2. Use the rubber mallet to touch and remove the base of the chair from the seat. 3. Use the pipe wrench to hold firmly on the top of the cylinder. Twist and then pull up to remove the cylinder. 4. Remove the orange cap from the new cylinder. Insert the bottom of the cylinder into the center of the chair base. 5. Carefully lift the chair base and chair cylinder on th… |
| Back Style | Solid Back |
| Best Sellers Rank | #191,575 in Home ( See Top 100 in Home ) #1,072 in Home Office Desk Chairs #1,871 in Home Office Furniture Accessories |
| Brand Name | DOZYANT |
| Color | Black |
| Customer Reviews | 4.4 4.4 out of 5 stars (847) |
| Fill Material | Foam |
| Finish Types | Painted |
| Form Factor | 360 |
| Frame Material Type | Alloy Steel |
| Furniture Base Movement | Swivel |
| Furniture Finish | Stainless Steel |
| Included Components | Office Chair Gas Lift Cylinder |
| Indoor Outdoor Usage | Indoor |
| Is Customizable? | No |
| Is Extendable | No |
| Is Foldable | No |
| Item Depth | 11 pulgadas |
| Item Dimensions | 5.1 x 5.1 x 27.9 centimeters |
| Item Dimensions D x W x H | 5.1D x 5.1W x 20.3H centimeters |
| Leg Style | Tapered Leg |
| Manufacturer | DOZYANT |
| Manufacturer Part Number | QG-8 |
| Material Type | Alloy Steel |
| Maximum Weight Recommendation | 450 Pounds |
| Model Name | QG-8 |
| Model Number | QG-8 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Pattern | Solid |
| Product Care Instructions | Wipe Clean |
| Reclining Position Count | 1 |
| Recommended Uses For Product | Office |
| Required Assembly | Yes |
| Room Type | Office |
| Seat Height | 22.5 Inches |
| Seat Material | Alloy Steel |
| Set Name | Office Chairs |
| Shape | Cylindrical |
| Size | Standard |
| Style Name | Modern |
| Surface Recommendation | Hard Floor |
| Tilting | No |
| Unit Count | 1 Count |
| Upholstery Fabric Type | Not Specified |

## Product Details

- **Brand:** DOZYANT
- **Colour:** Black
- **Material:** Alloy Steel
- **Product dimensions:** 5.1D x 5.1W x 20.3H centimeters
- **Size:** Standard

## Images

![8" Chair Hydraulic Cylinder Replacement for Office Chair Gas Lift Cylinder | Universal Class 4 office chair gas lift cylinder replacement 450 lbs heavy duty piston fits most executive office desk chairs - Image 1](https://m.media-amazon.com/images/I/61IM5JT+7eL.jpg)

## Questions & Answers

**Q: The length range is 11.2 inches to 22.5 inches and the adjustable range: 8 inches." This contradicts itself. Can you clarify the max and min length?**
A: Try looking at the correct picture,  you are looking at the measurement of only the shock body which is 11.2. With the shaft fully seated it's 14.5 and fully raised is 22.5, now you've got the 8''.  22.5 - 14.5 = 8  YAAAAAAAAAAAAAAAA.

**Q: Does this fit the aeron chair?**
A: You need to find out the diameter of the old cylinder and check against the new. It seems a pretty standard size for office chairs as far as I can see. Getting the old out and the new in can be hard work as these rely on friction and weight to sit in the base as well as connecting to the seat. There are video's on YouTube. Check Aeron cylinder replacement there and see if anyone has posted

**Q: Does it come with the tool required to remove the old cylinder?**
A: No, there are no tools included with the cylinder. There are instructions online for removal, the technique that I use primarily involves a 2# hammer. If the cylinder is really stuck into the bracket on the seat bottom, you may need a vise and a punch to hammer out the top of the cylinder. Step by step instructions are too long to detail here - search for a video tutorial on YouTube.

**Q: Will it work on this chair to raise it higher than its default? https://www.amazon.com/gp/product/b07s57ccxf  hoping so.**
A: Depends on what size cylinder you are replacing.  I bought this to replace a 4 inch and it was too high.  I bought a 6 inch and it worked fine.  No sagging even with my 250 lbs

## Frequently Bought Together

- 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
- MySit Gas Lift Cylinder Removal Tools 28mm/1.1-Inch, Removal Tools Sets for Replace Office Chair Cylinder, Fix Sinking Office Chair Stainless Steel Chair Saver for Stop Sinking - 2 Pieces
- 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

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-09-01*