---
product_id: 207966104
title: "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)"
brand: "mastery mart"
price: "$80.72"
currency: USD
in_stock: true
reviews_count: 13
category: "Mastery Mart"
url: https://www.desertcart.us/products/207966104-9-inches-to-13-inches-gas-lift-cylinder-for-most
store_origin: US
region: United States of America
---

# 4-inch adjustable stroke Fits most office chairs Class 4 heavy-duty steel 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)

**Brand:** mastery mart
**Price:** $80.72
**Availability:** ✅ In Stock

## Summary

> 🪑 Upgrade your throne — sit smarter, work better!

## Quick Answers

- **What is this?** 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) by mastery mart
- **How much does it cost?** $80.72 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/207966104-9-inches-to-13-inches-gas-lift-cylinder-for-most)

## 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 Class 4 steel supports up to 1000 lbs without compromise.
- • **Effortless Installation:** Quick swap replacement with seamless 360° swivel functionality.
- • **Universal Compatibility:** Designed to fit most office chairs including Herman Miller Aeron (except 1KEA).
- • **Confidence in Every Seat:** Backed by 100% satisfaction guarantee and responsive customer support.
- • **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 Class 4 alloy steel to support up to 1000 lbs. Engineered for universal fitment with most office chairs including Herman Miller Aeron, this heavy-duty replacement ensures smooth 360-degree swivel and eliminates sinking issues. Easy to install and backed by a satisfaction guarantee, it’s the ultimate upgrade for professionals demanding durability and ergonomic precision.

## Description

Product Description Will this chair cyinder fit on the herman miller aeron office chair? 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. Will this chair cyinder fit on the herman miller aeron office chair? 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. What are the measurements of the cylinder, shortest and longest height as well as overall length and width? 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 ). What are the measurements of the cylinder, shortest and longest height as well as overall length and width? 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 ). Will this chair cyinder work for 1KEA office chair? No. Will this chair cyinder work for 1KEA office chair? No. Mastery Mart Gas Cylinder for Office Chair Office Chair Cylinder 4" Chair Cylinder 5.5" Office Chair Cylinder 8"

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 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 | 48,047 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 448 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 2,456 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 | 453.59 kg |
| 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 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) - 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 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.

### ⭐⭐⭐⭐⭐ Good product, works perfectly, instant replacement. See below about removing the old cylinder!
*by A***A on 21 November 2023*

The new cylinder was fine, fitted in seconds and works perfectly. The problem is removing the old one. No skill is needed, only a stillson wrench (the bigger, the better) a heavy hammer and brute strength! There are plenty of videos on YouTube, but basically you lay the chair on its side and clamp the stillson to the stem just below where it enters the chair. Then heave-ho, it isn't going to be easy! It doesn't matter which way you turn it, but you must force the tapered joint to release. It will help if whoever fitted it smeared it with grease first. When done, take the base unit outside and hit the base of the old cylinder really hard with a heavy hammer. Again, it's a tight taper fit and really heavy blows will be required. Once done, that's it - just pop the new one in. Don't forget to first replace any gaiters covering the cylinder, or you will be reaching for the stillson again!

## 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 United States of America*
*Store origin: US*
*Last updated: 2026-07-17*