---
product_id: 557687468
title: "MASTERY MART 11 Inches-17 Inches Long Office Chair Gas Lift Cylinder Replacement, 5.5\" Stroke, Heavy Duty 1000 lbs, Universal Gas Cylinder for Most Office Chair, Class 4 (Not for 1KEA, Black)"
brand: "mastery mart"
price: "€ 83.22"
currency: EUR
in_stock: true
url: https://www.desertcart.fi/products/557687468-mastery-mart-11-inches-17-inches-long-office-chair-gas
store_origin: FI
region: Finland
---

# 5.5" adjustable stroke Universal fit for most chairs Class 4 heavy-duty steel MASTERY MART 11 Inches-17 Inches Long Office Chair Gas Lift Cylinder Replacement, 5.5" Stroke, Heavy Duty 1000 lbs, Universal Gas Cylinder for Most Office Chair, Class 4 (Not for 1KEA, Black)

**Brand:** mastery mart
**Price:** € 83.22
**Availability:** ✅ In Stock

## Summary

> ⚡ Upgrade your throne, rule your workspace!

## Quick Answers

- **What is this?** MASTERY MART 11 Inches-17 Inches Long Office Chair Gas Lift Cylinder Replacement, 5.5" Stroke, Heavy Duty 1000 lbs, Universal Gas Cylinder for Most Office Chair, Class 4 (Not for 1KEA, Black) by mastery mart
- **How much does it cost?** € 83.22 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/557687468-mastery-mart-11-inches-17-inches-long-office-chair-gas)

## Best For

- mastery mart enthusiasts

## Why This Product

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

## Key Features

- • **Built to Endure:** Class 4 gas lift supports up to 1000 lbs with premium steel durability
- • **Risk-Free Upgrade:** 100% satisfaction guarantee with easy replacement support
- • **Elevate Your Comfort:** 5.5-inch adjustable height stroke for perfect seating posture
- • **Smooth & Stable Ride:** 360-degree rotation with zero sinking or wobble issues
- • **Seamless Compatibility:** Fits most office chairs including Herman Miller Aeron (except 1KEA)

## Overview

The MASTERY MART gas lift cylinder is a heavy-duty, Class 4 pneumatic piston designed to replace office chair cylinders with a 5.5-inch adjustable height stroke. Engineered from premium steel, it supports up to 1000 lbs and fits most office chairs on the market, ensuring smooth 360-degree rotation and eliminating sinking problems. Ideal for professionals seeking durable, ergonomic seating upgrades.

## Description

Sponsored Ad – MASTERY MART 11 Inches-17 Inches Long Office Chair Gas Lift Cylinder Replacement, 5.5" Stroke, Heavy Duty 1000 lbs, Universal Gas Cylinder for Most Office Chair, Class 4 (Not for 1KEA, Black)

## Features

- 🏆【Adjustable Height 5.5 inches】The compressed length is 11.69 inches (297mm), the fully expanded length is 17.2 inches (437mm), sinking length is 1/2” (13mm), stroke length is 5.5 inches, which allows your chairs to rise higher. (Note: Please measure the length of the outer cylinder before purchase).
- 🏆【Universal Fit Size for Most Chairs】The outer column cylinder diameter connected to the base is 2 inches (50mm), and the piston shaft diameter connected to the chair is 1-1/8" (28mm). This pneumatic piston cylinder will fit almost every office chair on the market including Herman Miller Aeron. Please confirm these measurements before making a purchase. Not compatible with 1KEA and some other brands.
- 🏆【Upgraded Class 4 Gas Cylinder】Mastery Mart's office chair cylinder replacement is made of premium steel. This heavy-duty gas lift cylinder is manufactured to meet the highest industry standard (BIFMA/ANSI), the lift has a maximum capacity of up to 1000 lbs.
- 🏆【Eliminate Sinking Concerns】Prevent sinking issues by removing the old cylinder using a hammer or wrench. Simply assemble our new cylinder into the base and attach the seat. Our office chair lift provides seamless 360-degree rotation.
- 🏆【100% Satisfaction Guaranteed】For any issues with using our chair shock replacement, please don't hesitate to contact us. We are here to provide guidance, offer replacements, or process refunds, depending on your specific case. Your satisfaction is our priority.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | MASTERY MART |
| Model Number | MM-REP-GL04 |
| Colour | Matte Black |
| Diameter | 50 Millimetres |
| Capacity | 450 Kilograms |
| Special Features | Adjustable Height |
| Item Weight | 1.2 kg |

## Product Details

- **Brand:** MASTERY MART
- **Colour:** Matte Black
- **Material:** Alloy Steel
- **Product dimensions:** 29D x 5W x 5H centimetres
- **Size:** 5.5'' Travel Length

## Images

![MASTERY MART 11 Inches-17 Inches Long Office Chair Gas Lift Cylinder Replacement, 5.5" Stroke, Heavy Duty 1000 lbs, Universal Gas Cylinder for Most Office Chair, Class 4 (Not for 1KEA, Black) - Image 1](https://m.media-amazon.com/images/I/41p-aRp3OcL.jpg)

## Available Options

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

## Questions & Answers

**Q: How durable is this gas lift?**
A: The office chair cylinder is made from high-strength alloy steel, high-quality thickened outer steel, high safety and explosion-proof. The gas lift cylinder has passed SGS official test and BIFMA certification, highest safety Class 4.

**Q: Will this chair cyinder fit on the herman miller aeron office chair?**
A: Yes, our cylinder measures 1-1/8” (28mm) at the top, where it fits into the chair seat, shaft diameter 2” (50mm) at the bottom, where it fits into the chair base, you can measure your original cylinder before ordering.

**Q: What are the measurements of the cylinder, shortest and longest height as well as overall length and width?**
A: Top of the cylinder: 1-1/8”, Shaft diameter：2”,

**Q: Will this chair cyinder work for 1KEA office chair?**
A: No.

## Frequently Bought Together

- 11 Inches-17 Inches Office Chair Gas Lift Cylinder Replacement, Tall Chair Cylinder 5.5" Stroke, Hydraulic Pneumatic Shock Piston, Heavy Duty 1000lbs, Fit for Most Office Chairs, BIFMA/Class 4 (Black)
- Mastery Mart Office Chair Caster Wheels for Hardwood Floors, Heavy Duty and Quiet Smooth Rollerblade Wheels for Office Chair, Universal Size (11x22mm), Suitable for Most Chairs
- MASTERY MART 28" Heavy Duty Office Chair Base Replacement Parts, 2500 Lbs, Desk Chair Reinforced Metal Leg with Universal Gas Cylinder Hole and Casters Sockets, Matte Black

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-25*