---
product_id: 405014317
title: "8\" Long Stroke Adjustable Office Chair Gas Lift Cylinder Replacement Hydraulic Pneumatic Shock Piston Heavy Duty (450 lbs) for Tall Person Universal Size Fits Most Executive Chairs"
brand: "riyii"
price: "€ 13.88"
currency: EUR
in_stock: false
reviews_count: 8
url: https://www.desertcart.hr/products/405014317-8-long-stroke-adjustable-office-chair-gas-lift-cylinder-replacement
store_origin: HR
region: Croatia
---

# 450 lbs heavy-duty support 8-inch adjustable height range Universal fit for most executive chairs 8" Long Stroke Adjustable Office Chair Gas Lift Cylinder Replacement Hydraulic Pneumatic Shock Piston Heavy Duty (450 lbs) for Tall Person Universal Size Fits Most Executive Chairs

**Brand:** riyii
**Price:** € 13.88
**Availability:** ❌ Out of Stock

## Summary

> 🚀 Elevate your workspace with power and precision!

## Quick Answers

- **What is this?** 8" Long Stroke Adjustable Office Chair Gas Lift Cylinder Replacement Hydraulic Pneumatic Shock Piston Heavy Duty (450 lbs) for Tall Person Universal Size Fits Most Executive Chairs by riyii
- **How much does it cost?** € 13.88 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/405014317-8-long-stroke-adjustable-office-chair-gas-lift-cylinder-replacement)

## Best For

- riyii enthusiasts

## Why This Product

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

## Key Features

- • **Custom Comfort:** 8-inch adjustable stroke lets you tailor your chair height for perfect ergonomic alignment.
- • **Effortless Upgrade:** Simple installation means no extra screws or tools—get back to work faster.
- • **Unmatched Strength:** Class 4 heavy-duty gas lift supports up to 450 lbs with ease, built for power users.
- • **Risk-Free Confidence:** 100% satisfaction guaranteed with responsive support and full reimbursement if unsatisfied.
- • **Seamless Compatibility:** Universal sizing fits most executive, task, and drafting chairs—upgrade without hassle.

## Overview

The RiYii 8" Long Stroke Adjustable Gas Lift Cylinder is a heavy-duty, class 4 hydraulic piston designed to support up to 450 lbs. With an 8-inch adjustable height range (14.5" to 22.5"), it fits most executive and office chairs universally. Its durable aluminum alloy construction ensures long-lasting performance, while easy installation and a satisfaction guarantee make it the perfect upgrade for tall professionals seeking ergonomic comfort and reliability.

## Description

Product description Description If your gas cylinder is old or worn, you can replace it with the 8 inch heavy-duty gas lift cylinder. 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". Safe explosion-proof The gas lift cylinder for tall person universal size fits most executive chairs, which is safe and explosion-proof to ensure safe use. Thick stainless steel material Smooth lifting, low noise, made of class 4 level, heavy duty construction, thick outer steel to ensure bear the weight of 450bls. Easy installation The one-time forming circlip is easy to operate, good sealing performance, safe and reliable, and fits many office chairs. 360 Degree Free Rotation Suitable for many office stools and chairs, computer tables and chairs. The large extension piece that can be lifted up and down smoothly and silently. (Please measure the size before buying) Material: Steel Outer Cylinder Diameter: 2" Inner Cylinder Diameter: 1.1" Stroke: 8" Bearing Capacity: 450 lbs The gas lift cylinder possesses excellent mechanical properties and durability. It can support higher weight than the standard chair gas lift cylinder. And the pneumatic shock allows rotate 360 degrees easily, smoothly and silently. It can replace many gas lift cylinder. This gas lift cylinder use upgrade stainless steel lift rod,easy lift up or down. Using thick outer steel, load-bearing capacity: 450LBS Stable use, no noise even when you turning or lying on a chair to rest

Review: Tall & just what I needed - I have a secret lab titan , but it was too short for my recently installed wall mounted desk , so I got this , now my feet don’t touch the ground ( I am 6’0ft) but my body is positioned just right for my desk. Sturdy , I never feel like it’s going to break . The install was tricky but if you have a rubber mallet to remove the old piston , then you should be good to go .
Review: Easy installation and smooth operation - Purchased a new and comfortable office chair and wanted to be able to have it rise higher. So bought this 8" cylinder to replace OEM. Worked fine and liked the pricing. Appears solidly made.

## Features

- Extra Heavy Duty: This gas lift cylinder is class 4 level, heavy duty construction, it can even support up to 450 lbs without fail.
- Adjustable Height: The height of the hydraulic gas lift cylinder fully compressed is 14.5 ", and the height fully expanded is 22.5". This means that it has an 8-inch adjustable height that allows you to rise higher and use your office chair in more scenarios.
- Universal Size: This 8" Long Stroke Gas Lift is tall center support column of the chair. Outer cylinder: 2 inches, Inner cylinder: 1. 1 inches. Please measure dimensions before you purchase it. It suitable for most executive office chairs, task chair, office chair, rolling stool, drafting stool, computer chairs.
- Easy Installation: Can be installed easily with no additional screws required. Usually you may need to use a hammer to take out the old gas lift cylinder and replace it with a new one. (We suggest you search for "gas lift replacement" on youtube for instructions)
- GUARANTEED: If any problem, please feel free to contact us, we'll provide our advice or solutions. If you don't absolutely enjoy it, we guarantee you that we will reimburse you for 100% of your order.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09H5MHWLC |
| Age Range Description | Adult |
| Arm Style | Armless |
| Back Style | Solid Back |
| Best Sellers Rank | #514,221 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #691 in Mechanical Shock Absorbers |
| Brand | RiYii |
| Brand Name | RiYii |
| Color | Black |
| Customer Reviews | 4.3 out of 5 stars 73 Reviews |
| Fabric Type | Class 4,steel Cylinder Column With Mate Black Finish |
| Finish Types | matte black finish |
| Frame Material Type | Alloy Steel |
| Furniture Base Movement | Swivel |
| Included Components | No components included |
| Indoor Outdoor Usage | Indoor |
| Item Dimensions | 2 x 1.1 x 14.5 inches |
| Item Dimensions D x W x H | 2"D x 1.1"W x 14.5"H |
| Item Weight | 3 Pounds |
| Leg Style | sled base |
| Manufacturer | RiYii |
| Material | Aluminum |
| Material Type | Aluminum |
| Maximum Weight Recommendation | 450 Pounds |
| Model Number | RiYii |
| Number of Height Positions | 2 |
| Pattern | Solid |
| Product Dimensions | 2"D x 1.1"W x 14.5"H |
| Reclining Position Count | 1 |
| Recommended Uses For Product | Office |
| Required Assembly | Yes |
| Room Type | Office |
| Seat Material | Foam |
| Size | 8 Inch |
| Surface Recommendation | Hard Floor |
| UPC | 723265454547 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** RiYii
- **Color:** Black
- **Product Dimensions:** 2"D x 1.1"W x 14.5"H
- **Size:** 8 Inch
- **Back Style:** Solid Back

## Images

![8" Long Stroke Adjustable Office Chair Gas Lift Cylinder Replacement Hydraulic Pneumatic Shock Piston Heavy Duty (450 lbs) for Tall Person Universal Size Fits Most Executive Chairs - Image 1](https://m.media-amazon.com/images/I/51t8vWUSUGL.jpg)
![8" Long Stroke Adjustable Office Chair Gas Lift Cylinder Replacement Hydraulic Pneumatic Shock Piston Heavy Duty (450 lbs) for Tall Person Universal Size Fits Most Executive Chairs - Image 2](https://m.media-amazon.com/images/I/5156iIp7chL.jpg)
![8" Long Stroke Adjustable Office Chair Gas Lift Cylinder Replacement Hydraulic Pneumatic Shock Piston Heavy Duty (450 lbs) for Tall Person Universal Size Fits Most Executive Chairs - Image 3](https://m.media-amazon.com/images/I/61HAs3GUo+L.jpg)
![8" Long Stroke Adjustable Office Chair Gas Lift Cylinder Replacement Hydraulic Pneumatic Shock Piston Heavy Duty (450 lbs) for Tall Person Universal Size Fits Most Executive Chairs - Image 4](https://m.media-amazon.com/images/I/61WXCBpyS-L.jpg)
![8" Long Stroke Adjustable Office Chair Gas Lift Cylinder Replacement Hydraulic Pneumatic Shock Piston Heavy Duty (450 lbs) for Tall Person Universal Size Fits Most Executive Chairs - Image 5](https://m.media-amazon.com/images/I/71TKhjlyrGL.jpg)

## Questions & Answers

**Q: Trying to find the same brand but smaller lift, like around 5 inch**
A: Look at quality and reviews. That's what I did. There are many lift brands that are universal fit. 
I got the 8" as I am over 6' tall.
After recovering my Staples office chair, I realized I probably should have gotten a shorter one. It works, but it goes from low where my feet just hit the floor to stool height.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Tall & just what I needed
*by G***. on April 27, 2022*

I have a secret lab titan , but it was too short for my recently installed wall mounted desk , so I got this , now my feet don’t touch the ground ( I am 6’0ft) but my body is positioned just right for my desk. Sturdy , I never feel like it’s going to break . The install was tricky but if you have a rubber mallet to remove the old piston , then you should be good to go .

### ⭐⭐⭐⭐⭐ Easy installation and smooth operation
*by B***Z on October 5, 2024*

Purchased a new and comfortable office chair and wanted to be able to have it rise higher. So bought this 8" cylinder to replace OEM. Worked fine and liked the pricing. Appears solidly made.

### ⭐⭐⭐⭐⭐ Really high
*by J***R on November 9, 2023*

I needed a gas-filled cylinder for a chair that could go high up, as I needed one for the garage use. This one is longer in its fully compressed position compared to average cylinders, and when extended you are sitting really high up. Even at fully compressed height is high enough for me.

## Frequently Bought Together

- RiYii 8" Long Stroke Adjustable Office Chair Gas Lift Cylinder Replacement Hydraulic Pneumatic Shock Piston Heavy Duty (450 lbs) for Tall Person Universal Size Fits Most Executive Chairs
- TICONN Office Chair Caster Wheels Set of 5 for Tile, Hardwood Floors and Carpets, Universal Fit for Most Chairs (Black)

---

## 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.hr/products/405014317-8-long-stroke-adjustable-office-chair-gas-lift-cylinder-replacement](https://www.desertcart.hr/products/405014317-8-long-stroke-adjustable-office-chair-gas-lift-cylinder-replacement)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-06-05*