---
product_id: 207966104
title: "9 Inches to 13 Inches Office Chair Cylinder Replacement, 4'' Stroke, Heavy Duty 1000 lbs, Hydraulic Pneumatic Shock Piston, Universal Gas Cylinder Fit for Most Office Chairs, Class 4 (Black)"
brand: "mastery mart"
price: "VT18539"
currency: VUV
in_stock: true
reviews_count: 8
category: "Mastery Mart"
url: https://www.desertcart.vu/products/207966104-9-inches-to-13-inches-office-chair-cylinder-replacement-4
store_origin: VU
region: Vanuatu
---

# 4-inch adjustable stroke Fits most office chairs Class 4 heavy-duty piston 9 Inches to 13 Inches Office Chair Cylinder Replacement, 4'' Stroke, Heavy Duty 1000 lbs, Hydraulic Pneumatic Shock Piston, Universal Gas Cylinder Fit for Most Office Chairs, Class 4 (Black)

**Brand:** mastery mart
**Price:** VT18539
**Availability:** ✅ In Stock

## Summary

> 🪑 Upgrade your throne with heavy-duty precision!

## Quick Answers

- **What is this?** 9 Inches to 13 Inches Office Chair Cylinder Replacement, 4'' Stroke, Heavy Duty 1000 lbs, Hydraulic Pneumatic Shock Piston, Universal Gas Cylinder Fit for Most Office Chairs, Class 4 (Black) by mastery mart
- **How much does it cost?** VT18539 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/207966104-9-inches-to-13-inches-office-chair-cylinder-replacement-4)

## 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:** Premium alloy steel with a 1000 lbs load capacity ensures durability.
- • **Effortless Installation:** Quick swap design eliminates sinking issues and restores chair stability.
- • **Universal Compatibility:** Designed to fit nearly all office chairs, including Herman Miller Aeron.
- • **Trusted Quality Assurance:** Backed by BIFMA/ANSI standards and a satisfaction guarantee.
- • **Elevate Your Workspace Comfort:** Smooth 4-inch height adjustment for personalized seating.

## Overview

The MASTERY MART Gas Lift Cylinder offers a robust 4-inch adjustable height range, crafted from premium alloy steel to support up to 1000 lbs. Engineered as a Class 4 pneumatic piston, it fits most office chairs on the market (excluding select brands like 1KEA), ensuring smooth 360-degree swivel and reliable performance. This replacement cylinder meets top industry standards (BIFMA/ANSI) and comes with a satisfaction guarantee, making it the ultimate upgrade for professionals seeking ergonomic excellence and durability.

## Description

MASTERY MART 9 Inches to 13 Inches Gas Lift Cylinder for Most Office Chair, 4" Stroke, Heavy Duty 1000lbs, Office Chair Gas Lift Cylinder Replacement, Class 4 Pneumatic Piston (Not for 1KEA, Black) : 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 product - Recommended - The item arrived by the promised delivery date. It was relatively easy to fit and works well. The whole transaction was a breeze. Recommended.

## 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 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 | B0859WG3X8 |
| Age Range Description | Adult |
| Arm Style | Armless |
| Assembly Instructions Description | Assembly required. Follow the instructions provided. |
| Back Style | Mid Back |
| Best Sellers Rank | 36,052 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 313 in Furniture Accessories |
| Brand | MASTERY MART |
| Brand Name | MASTERY MART |
| Colour | Matte Black |
| Country Of Origin | China |
| Customer Reviews | 4.6 out of 5 stars 2,412 Reviews |
| Fabric Type | No |
| Form Factor | swiveling |
| Frame Material Type | Metal |
| Furniture Base Movement | Swivel |
| Included Components | Office Chair Gas Cylinder |
| Indoor Outdoor Usage | Indoor |
| Is Assembly Required? | No |
| Is Customizable? | No |
| Is Foldable | No |
| Item Depth | 2 inches |
| Item Dimensions | 25 x 5 x 5 centimetres |
| Item Dimensions D x W x H | 25D x 5W x 5H centimetres |
| Item Shape | Round |
| Item Weight | 0.8 Kilograms |
| Item weight | 0.8 Kilograms |
| Leg Style | Straight Leg |
| Manufacturer | Mastery Mart Co., Limited |
| Manufacturer Part Number | MF-PT001 |
| Material | Alloy Steel |
| Material Type | Alloy Steel |
| Maximum Weight Recommendation | 1000 Pounds |
| Model Name | Office Chair Gas Cylinder |
| Model Number | GAS-LIFT-GL |
| Pattern | Solid |
| Product Care Instructions | Wipe Clean |
| Product dimensions | 25D x 5W x 5H centimetres |
| Reclining Position Count | 1 |
| Recommended Uses For Product | Office |
| Room Type | Office |
| Seat Depth | 24.9 centimetres |
| Seat Material Type | Fabric |
| Size | 4'' Travel Length |
| Sleeping Bag Filling Material | Foam |
| Special Features | Adjustable Height |
| Style Name | Solid |

## Product Details

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

## Images

![9 Inches to 13 Inches Office Chair Cylinder Replacement, 4'' Stroke, Heavy Duty 1000 lbs, Hydraulic Pneumatic Shock Piston, Universal Gas Cylinder Fit for Most Office Chairs, Class 4 (Black) - Image 1](https://m.media-amazon.com/images/I/51vgc3GW7CL.jpg)

## Questions & Answers

**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 ); 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 product - Recommended
*by A***T on 2 March 2026*

The item arrived by the promised delivery date. It was relatively easy to fit and works well. The whole transaction was a breeze. Recommended.

### ⭐⭐⭐⭐⭐ 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.

## Frequently Bought Together

- 9 Inches to 13 Inches Office Chair Cylinder Replacement, 4" Stroke, Heavy Duty 1000lbs, Hydraulic Pneumatic Shock Piston, Universal Gas Cylinder Fit for Most Office Chairs, Class 4, Black
- Besitu 500Lbs Office Chair Replacement Parts, w/ 6'' x 10.2" Mounting Holes Chair Base Heavy Duty Plate Swivel Tilt Control Seat Mechanism for Executive and Gaming 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 Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-17*