---
product_id: 210281940
title: "MASTERY MART 9 Inches to 13 Inches Office Chair Gas Cylinder, 4\" Stroke, Heavy Duty 1000 lbs, Universal Office Chair Replacement Gas Lift Cylinder Pneumatic Shock, Class 4 (Not for 1KEA, Silver)"
brand: "mastery mart"
price: "฿4820"
currency: THB
in_stock: true
reviews_count: 13
category: "Mastery Mart"
url: https://www.desertcart.co.th/products/210281940-mastery-mart-9-inches-to-13-inches-office-chair-gas
store_origin: TH
region: Thailand
---

# 4-inch adjustable stroke Universal fit for 99% chairs Class 4 heavy-duty steel MASTERY MART 9 Inches to 13 Inches Office Chair Gas Cylinder, 4" Stroke, Heavy Duty 1000 lbs, Universal Office Chair Replacement Gas Lift Cylinder Pneumatic Shock, Class 4 (Not for 1KEA, Silver)

**Brand:** mastery mart
**Price:** ฿4820
**Availability:** ✅ In Stock

## Summary

> ⚡ Upgrade your throne with power, precision, and peace of mind!

## Quick Answers

- **What is this?** MASTERY MART 9 Inches to 13 Inches Office Chair Gas Cylinder, 4" Stroke, Heavy Duty 1000 lbs, Universal Office Chair Replacement Gas Lift Cylinder Pneumatic Shock, Class 4 (Not for 1KEA, Silver) by mastery mart
- **How much does it cost?** ฿4820 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/210281940-mastery-mart-9-inches-to-13-inches-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 cylinder engineered to support up to 1000 lbs—durability that outlasts your busiest workdays.
- • **Fits Like a Glove:** Universal sizing designed to replace most office and gaming chair cylinders, including Herman Miller Aeron.
- • **Risk-Free Upgrade:** Backed by 100% satisfaction guarantee with responsive customer support for hassle-free replacements.
- • **Elevate Your Comfort:** Adjust your chair height seamlessly with a 4-inch stroke for perfect ergonomic positioning.
- • **Smooth & Stable Ride:** 360-degree rotation with zero sinking—experience flawless movement and reliable support all day long.

## Overview

The MASTERY MART Office Chair Gas Cylinder offers a 4-inch adjustable height range, crafted from premium steel to support up to 1000 lbs. Designed as a universal replacement compatible with most office and gaming chairs (excluding select brands like 1KEA), it ensures smooth 360-degree rotation and eliminates sinking issues. This Class 4 pneumatic lift combines heavy-duty durability with easy installation, backed by a satisfaction guarantee for professional-grade comfort and reliability.

## Description

MASTERY MART 9 Inches to 13 Inches Office Chair Gas Cylinder, 4" Stroke, Heavy Duty 1000 lbs, Universal Office Chair Replacement Gas Lift Cylinder Pneumatic Shock, Class 4 (Not for 1KEA, Silver) : desertcart.co.uk: Stationery & Office Supplies

Review: Perfect for Vertagear gaming chairs. - Bought this to replace the piston in my aging Vertagear gaming chair. Perfect replacement. Gives the same lowest level with an extra 1inch/2.5cm of height. Easy to fit, well packaged and seems to work really well. Only time will tell on its longevity. TOP TIP: Be aware that there are varying low and height differences so be sure to measure your existing pistons lowest, highest, overall length and travel length. It's also a good idea to check the taper at the bottom of your existing pistons as not all pistons are equal in this area. This one sticks through the bottom quite a bit so if your wheel base is low to the ground it will probably hit the floor before the wheels. In that case go for one with less of a taper so not so much of the piston sticks out the bottom of your wheel base.
Review: Good value cylinder which fitted the Corsair T3 Rush - MASTERY MART 9 Inches to 13 Inches Gas Lift Cylinder for Most Office Chair, Fitted a Corsair T3 rush gaming chair which the cylinder failed. I believe the Corsair chair has had two replacements cylinders with the last one lasting around 6 months before failing spectacularly. This fitted the gaming chair perfectly and is a good replacement. I'm hoping this last far more than 6 months so will update the review if anything happens. Installing the cylinder was easy enough i couldn't salvage the base plate due to the damage so i also had to replace the tilt plate and base with the wheel. Overall This so far is good and fitted perfectly well, good value comparing to the original which in my opinion fails fairly quickly and the person isn't at all heavy.

## Features

- 🏆【Adjustable Height 4 inches】The compressed length is 9.88 inches (251mm), the fully expanded length is 13.62 inches (346mm), stroke length is 4 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 |
|---------------|-------|
| ASIN | B0859WSH26 |
| Brand | MASTERY MART |
| Colour | Silver |
| Customer Reviews | 4.5 4.5 out of 5 stars (2,310) |
| Date First Available | 29 Feb. 2020 |
| Diameter | 50 Millimetres |
| Item Weight | 1 kg |
| Model Number | MF-PT001B |
| Special Features | Heavy-duty construction, adjustable stroke length, premium grade manufacturing |

## Product Details

- **Brand:** MASTERY MART
- **Colour:** Silver
- **Material:** Alloy Steel
- **Product dimensions:** 25D x 5W x 5H centimetres
- **Size:** 4'' Travel Length

## Images

![MASTERY MART 9 Inches to 13 Inches Office Chair Gas Cylinder, 4" Stroke, Heavy Duty 1000 lbs, Universal Office Chair Replacement Gas Lift Cylinder Pneumatic Shock, Class 4 (Not for 1KEA, Silver) - Image 1](https://m.media-amazon.com/images/I/21anjCG7cZL.jpg)
![MASTERY MART 9 Inches to 13 Inches Office Chair Gas Cylinder, 4" Stroke, Heavy Duty 1000 lbs, Universal Office Chair Replacement Gas Lift Cylinder Pneumatic Shock, Class 4 (Not for 1KEA, Silver) - Image 2](https://m.media-amazon.com/images/I/41JgA-26-IL.jpg)
![MASTERY MART 9 Inches to 13 Inches Office Chair Gas Cylinder, 4" Stroke, Heavy Duty 1000 lbs, Universal Office Chair Replacement Gas Lift Cylinder Pneumatic Shock, Class 4 (Not for 1KEA, Silver) - Image 3](https://m.media-amazon.com/images/I/41lP9wpj8wL.jpg)
![MASTERY MART 9 Inches to 13 Inches Office Chair Gas Cylinder, 4" Stroke, Heavy Duty 1000 lbs, Universal Office Chair Replacement Gas Lift Cylinder Pneumatic Shock, Class 4 (Not for 1KEA, Silver) - Image 4](https://m.media-amazon.com/images/I/51AMrxuBLhL.jpg)
![MASTERY MART 9 Inches to 13 Inches Office Chair Gas Cylinder, 4" Stroke, Heavy Duty 1000 lbs, Universal Office Chair Replacement Gas Lift Cylinder Pneumatic Shock, Class 4 (Not for 1KEA, Silver) - Image 5](https://m.media-amazon.com/images/I/51dWcjgihLL.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”, Shortest and longest height for 4“ stroke ( 9.88 Inches -13.6 Inches ); 4.5“ stroke ( 10.7 Inches -15.2 Inches ); 5.5“ stroke ( 11.7 Inches -17.2 Inches ); 8“ stroke ( 14 Inches -21.8 Inches ).

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect for Vertagear gaming chairs.
*by K***N on 2 December 2025*

Bought this to replace the piston in my aging Vertagear gaming chair. Perfect replacement. Gives the same lowest level with an extra 1inch/2.5cm of height. Easy to fit, well packaged and seems to work really well. Only time will tell on its longevity. TOP TIP: Be aware that there are varying low and height differences so be sure to measure your existing pistons lowest, highest, overall length and travel length. It's also a good idea to check the taper at the bottom of your existing pistons as not all pistons are equal in this area. This one sticks through the bottom quite a bit so if your wheel base is low to the ground it will probably hit the floor before the wheels. In that case go for one with less of a taper so not so much of the piston sticks out the bottom of your wheel base.

### ⭐⭐⭐⭐⭐ Good value cylinder which fitted the Corsair T3 Rush
*by A***S on 9 October 2025*

MASTERY MART 9 Inches to 13 Inches Gas Lift Cylinder for Most Office Chair, Fitted a Corsair T3 rush gaming chair which the cylinder failed. I believe the Corsair chair has had two replacements cylinders with the last one lasting around 6 months before failing spectacularly. This fitted the gaming chair perfectly and is a good replacement. I'm hoping this last far more than 6 months so will update the review if anything happens. Installing the cylinder was easy enough i couldn't salvage the base plate due to the damage so i also had to replace the tilt plate and base with the wheel. Overall This so far is good and fitted perfectly well, good value comparing to the original which in my opinion fails fairly quickly and the person isn't at all heavy.

### ⭐⭐⭐⭐⭐ Simple Fit and feels good quality
*by S***S on 20 August 2025*

Perfect fir for my chair and lift works perfectly. Once the old strut was out this was a really simple fit and feels well built. Nice Chrome outside which matches my chair perfectly.

## Frequently Bought Together

- MASTERY MART 9 Inches to 13 Inches Gas Lift Cylinder for Most Office Chair, 4" Stroke, Heavy Duty 1000 lbs, Office Chair Gas Lift Cylinder Replacement, Class 4 (Not for 1KEA, Silver)
- MASTERY MART Office Chair Base Replacement, 28 Inch Heavy Duty 2500Lbs Metal Leg, Reinforced for Swivel Gaming Chair, Universal Caster and Gas Cylinder Size, Polished Steel
- MasteryMart Rollerblade Style Caster Wheels Replacement Set of 5 for Office Chair, Office Chair Wheels Universal Size 11x22mm, Rubber Casters for All Floors, Heavy Duty, Smooth (Not for 1KEA, Silver)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-11*