---
product_id: 215223393
title: "8\" Chair Hydraulic Cylinder Replacement for Office Chair Gas Lift Cylinder"
brand: "dozyant"
price: "¥18975"
currency: JPY
in_stock: true
category: "Dozyant"
url: https://www.desertcart.jp/products/215223393-8-chair-hydraulic-cylinder-replacement-for-office-chair-gas-lift
store_origin: JP
region: Japan
---

# 450 lbs heavy-duty capacity 8-inch adjustable stroke 360° smooth noiseless rotation 8" Chair Hydraulic Cylinder Replacement for Office Chair Gas Lift Cylinder

**Brand:** dozyant
**Price:** ¥18975
**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 by dozyant
- **How much does it cost?** ¥18975 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/215223393-8-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 executive-level durability.
- • **Universal Fit Precision:** Designed with a 2-inch outer and 1.1-inch inner diameter to fit most office and executive chairs flawlessly.
- • **Whisper-Quiet Operation:** Experience smooth, noiseless 360-degree swivel motion that keeps your workspace distraction-free.
- • **DIY Friendly Installation:** No extra screws needed—replace your chair’s gas lift cylinder quickly and easily with included instructions.
- • **Effortless Height Control:** Adjust your chair height seamlessly with an 8-inch stroke for perfect ergonomic positioning.

## Overview

This 8-inch hydraulic gas lift cylinder replacement is a heavy-duty, Class 4 office chair component designed to support up to 450 lbs. It features an adjustable stroke from 11.2 to 22.5 inches, fits standard 2-inch outer and 1.1-inch inner diameters, and offers smooth, noiseless 360-degree rotation. Easy to install without additional hardware, it’s the perfect upgrade to restore your chair’s ergonomic function and extend its life.

## 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 | Heavy Duty |
| Age Range Description | Adult |
| Assembly Instructions Description | Assembly Required, Instructions Included |
| Back Style | Solid Back |
| Best Sellers Rank | #23,336 in Office Products ( See Top 100 in Office Products ) #583 in Office Furniture Accessories #691 in Home Office Desk Chairs |
| Brand | DOZYANT |
| Brand Name | DOZYANT |
| Color | Black |
| Customer Reviews | 4.5 out of 5 stars 7,771 Reviews |
| Fill Material | Foam |
| Finish Types | Powder Coated |
| Form Factor | 360 |
| Frame Material Type | Alloy Steel |
| Furniture Base Movement | Swivel |
| Furniture Finish | Stainless Steel |
| Included Components | Gas Lift Cylinder |
| Indoor Outdoor Usage | Indoor |
| Item Depth | 8 inches |
| Item Dimensions | 2 x 2 x 11 inches |
| Item Dimensions D x W x H | 2"D x 2"W x 8"H |
| Item Highlight | Universal Class 4 office chair gas lift cylinder replacement 450 lbs heavy duty piston fits most executive office desk chairs |
| Leg Style | Straight Leg |
| Manufacturer | DOZYANT |
| Manufacturer Part Number | QG-8 |
| Material | Alloy Steel |
| 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 |
| Product Dimensions | 2"D x 2"W x 8"H |
| Reclining Position Count | 1 |
| Recommended Uses For Product | Office |
| Room Type | Office |
| Seat Height | 22.5 inches |
| Seat Material | Alloy Steel |
| Shape | Cylindrical |
| Size | 8 inch |
| Style Name | Modern |
| Surface Recommendation | Hard Floor |
| Unit Count | 1 Count |

## Product Details

- **Brand:** DOZYANT
- **Color:** Black
- **Material:** Alloy Steel
- **Product Dimensions:** 2"D x 2"W x 8"H
- **Size:** 8 inch

## Images

![8" Chair Hydraulic Cylinder Replacement for Office Chair Gas Lift Cylinder - Image 1](https://m.media-amazon.com/images/I/61IM5JT+7eL.jpg)

## Available Options

This product comes in different **Size** options.

## 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

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.jp/products/215223393-8-chair-hydraulic-cylinder-replacement-for-office-chair-gas-lift](https://www.desertcart.jp/products/215223393-8-chair-hydraulic-cylinder-replacement-for-office-chair-gas-lift)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-10-12*