---
product_id: 397805837
title: "10 Inches to 15 Inches Office Chair Gas Lift Cylinder Replacement, 4.5'' Stroke, Hydraulic Pneumatic Shock Piston, Heavy Duty, Universal Diameter Fit for Most Office Chair, Class 4 (Polished Steel)"
brand: "mastery mart"
price: "52493CFA"
currency: XOF
in_stock: true
reviews_count: 13
category: "Mastery Mart"
url: https://www.desertcart.sn/products/397805837-10-inches-to-15-inches-office-chair-gas-lift-cylinder
store_origin: SN
region: Senegal
---

# 4.5'' adjustable stroke 360° smooth swivel Class 4 heavy-duty steel 10 Inches to 15 Inches Office Chair Gas Lift Cylinder Replacement, 4.5'' Stroke, Hydraulic Pneumatic Shock Piston, Heavy Duty, Universal Diameter Fit for Most Office Chair, Class 4 (Polished Steel)

**Brand:** mastery mart
**Price:** 52493CFA
**Availability:** ✅ In Stock

## Summary

> 🚀 Upgrade your chair, upgrade your day — rise above the rest!

## Quick Answers

- **What is this?** 10 Inches to 15 Inches Office Chair Gas Lift Cylinder Replacement, 4.5'' Stroke, Hydraulic Pneumatic Shock Piston, Heavy Duty, Universal Diameter Fit for Most Office Chair, Class 4 (Polished Steel) by mastery mart
- **How much does it cost?** 52493CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/397805837-10-inches-to-15-inches-office-chair-gas-lift-cylinder)

## 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 polished steel cylinder supports up to 1000 lbs, engineered for long-lasting durability.
- • **Satisfaction Assured:** Backed by responsive support and hassle-free replacements to keep you seated in confidence.
- • **Elevate Your Workspace:** Adjust chair height seamlessly with a 4.5-inch stroke for perfect ergonomic alignment.
- • **Effortless Installation:** Quick swap design lets you replace your gas lift in under 5 minutes—no professional help needed.
- • **Universal Compatibility:** Fits most office chairs including premium brands like Herman Miller Aeron with a 2-inch diameter base.

## Overview

This Mastery Mart Class 4 gas lift cylinder replacement offers a polished steel, heavy-duty pneumatic piston with a 4.5-inch adjustable stroke, universally fitting most office chairs. Engineered to support up to 1000 lbs, it ensures smooth 360-degree swivel and easy installation, making it the ultimate upgrade for professionals seeking ergonomic comfort and durability.

## Description

Buy 10 Inches to 15 Inches Office Chair Gas Lift Cylinder Replacement, 4.5'' Stroke, Hydraulic Pneumatic Shock Piston, Heavy Duty, Universal Diameter Fit for Most Office Chair, Class 4 (Polished Steel): Home Office Desk Chairs - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Great For Converting An Office Chair Into a Counter Height Stool. Will Make The Chair Taller. - I wanted to turn a really nice office chair into a counter stool for my mother. I realized that I needed to convert the wheels to stationary chair guides, and to buy a new gas cylinder that increased the max height of the chair. I actually did some measurements prior to purchasing this. Most office chairs have a maximum height of around 21-22 inches. My chair had a max height of 23.5 inches, but I still needed higher. And I later learned that I would need to account for the "plushiness" of the cushion, compared to a firmer bar stool type chair, as the cushion would sink in an inch after you were sitting in it. I was weary about how long these things last, so I tried to buy the exact size where the minimum setting was high enough to not require it to be lifted at all. So I originally bought the 8 inch lift gas cylinder. At it's minimum height, this made the chair like 27 inches high, which was too high for my needs. I ended up exchanging the 8 inch one for this 4 inch gas lift that was slightly too short, but only required a tiny bit of lift. And for the price these cost, I'm no longer worried about them not lasting for years. I can just buy another one. Installation was easy, because it was a relatively new chair. I recommend you take the wheel base off first. So place your chair probably head down, ideally on some carpet, fully exposing all wheels in the air. Then get a rubber mallet and hit against the gas lift bottom while pulling on the wheel base, and eventually the base will come off. Then get a pipe wrench or some kind of wrench with a wide enough opening, and turn it the lift cylinder to the left. Mine came off relatively easily. The whole process probably took less than 5 minutes which surprised me cuz some people say it takes like an hour of banging. My original chair piston was not broken, so I wanted to preserve it the best I could. Some say you can protect it from scratches if you put like a rag in between, but in my opinion, that's not feasible because it'll just cause the wrench to spin. I removed the old piston the best I could, but there are pipe wrench marks on it. I wanted to keep it because not only is it still good, but if I ever wanted to turn it back into a regular chair I could. Only had it about a couple of weeks, but so far so good. You're apparently suppose to go up and down on the cylinder every week or so to keep the piston lubed, but I've never done that, and most people probably don't once they find the ideal height. But that's what you're suppose to do for maintenance. I'll reiterate that I do believe this may make your chair taller than it was before on it's lowest setting, and has the range to make it much taller (drafting chair height) if desired. I've never had an issue with these before, because I always sit at the lowest setting which is around 17 inches on most chairs.
Review: i am 6'6" and the 5.5 inch is perfect. - as someone who is 6'6" tall my office chair has NEVER been amazing. I Put in the 11 inch piston with the 5" stroke and I'm honestly amazed.. For the first time since grammar school i can sit in a chair and my feet don't touch the ground if i expand it all the way up. truly, for someone with back problems(Former paratrooper) having my knees at the right angle and my feet flat on the ground. its unreal how much better my back feels already. easy install, pop old one out with a dead blow or sledge hammer. if the piston sticks inside the area below the seat spray some PB blaster in where it connects then spin it with a 12" pipe wrench. as soon as it starts spinning it should slide right out easily. I will update late if things go bad. an hour in and i am quite happy. NOTE: I did also add the lifelong black rubberized casters. id imagine those also raised the chair about 2"

## Features

- 🏆【Adjustable Height 4.5 inches】The compressed length is 10.7 inches (272mm), the fully expanded length is 15.27 inches (388mm), travel length is 4.5 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 pneumatic lift replacement supports 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 | B099RB3KV7 |
| Age Range Description | Adult |
| Best Sellers Rank | #13,276 in Office Products ( See Top 100 in Office Products ) #315 in Office Furniture Accessories |
| Brand | MASTERY MART |
| Brand Name | MASTERY MART |
| Color | Polished Steel |
| Customer Reviews | 4.5 out of 5 stars 3,040 Reviews |
| EU Spare Part Availability Duration | 1 years |
| Frame Material Type | Alloy Steel |
| Furniture Base Movement | Swivel |
| Included Components | 2 x Arm Pad, 1 x Ottoman |
| Indoor Outdoor Usage | Indoor |
| Item Depth | 2 inches |
| Item Dimensions | 11.02 x 2.17 x 2.17 inches |
| Item Dimensions D x W x H | 1.97"D x 1.97"W x 11.02"H |
| Item Weight | 2.4 pounds |
| Leg Style | Straight Leg |
| Manufacturer | Mastery Mart Inc. |
| Manufacturer Part Number | MM-REP-GL03 |
| Material | Alloy Steel |
| Material Type | Alloy Steel |
| Maximum Weight Recommendation | 1000 pounds |
| Model Number | GAS-LIFT-GL |
| Number of Items | 1 |
| Number of Packs | 1 |
| Pattern | Solid |
| Product Dimensions | 1.97"D x 1.97"W x 11.02"H |
| Reclining Position Count | 1 |
| Room Type | Office |
| Shape | Cylindrical |
| Size | 4.5'' Travel Length |
| Style Name | Solid |
| Unit Count | 1 Count |

## Product Details

- **Brand:** MASTERY MART
- **Color:** Polished Steel
- **Material:** Metal
- **Product Dimensions:** 1.97"D x 1.97"W x 11.02"H
- **Size:** 4.5'' Travel Length

## Images

![10 Inches to 15 Inches Office Chair Gas Lift Cylinder Replacement, 4.5'' Stroke, Hydraulic Pneumatic Shock Piston, Heavy Duty, Universal Diameter Fit for Most Office Chair, Class 4 (Polished Steel) - Image 1](https://m.media-amazon.com/images/I/51WtFLnctCL.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 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

### ⭐⭐⭐⭐⭐ Great For Converting An Office Chair Into a Counter Height Stool. Will Make The Chair Taller.
*by H***T on February 8, 2024*

I wanted to turn a really nice office chair into a counter stool for my mother. I realized that I needed to convert the wheels to stationary chair guides, and to buy a new gas cylinder that increased the max height of the chair. I actually did some measurements prior to purchasing this. Most office chairs have a maximum height of around 21-22 inches. My chair had a max height of 23.5 inches, but I still needed higher. And I later learned that I would need to account for the "plushiness" of the cushion, compared to a firmer bar stool type chair, as the cushion would sink in an inch after you were sitting in it. I was weary about how long these things last, so I tried to buy the exact size where the minimum setting was high enough to not require it to be lifted at all. So I originally bought the 8 inch lift gas cylinder. At it's minimum height, this made the chair like 27 inches high, which was too high for my needs. I ended up exchanging the 8 inch one for this 4 inch gas lift that was slightly too short, but only required a tiny bit of lift. And for the price these cost, I'm no longer worried about them not lasting for years. I can just buy another one. Installation was easy, because it was a relatively new chair. I recommend you take the wheel base off first. So place your chair probably head down, ideally on some carpet, fully exposing all wheels in the air. Then get a rubber mallet and hit against the gas lift bottom while pulling on the wheel base, and eventually the base will come off. Then get a pipe wrench or some kind of wrench with a wide enough opening, and turn it the lift cylinder to the left. Mine came off relatively easily. The whole process probably took less than 5 minutes which surprised me cuz some people say it takes like an hour of banging. My original chair piston was not broken, so I wanted to preserve it the best I could. Some say you can protect it from scratches if you put like a rag in between, but in my opinion, that's not feasible because it'll just cause the wrench to spin. I removed the old piston the best I could, but there are pipe wrench marks on it. I wanted to keep it because not only is it still good, but if I ever wanted to turn it back into a regular chair I could. Only had it about a couple of weeks, but so far so good. You're apparently suppose to go up and down on the cylinder every week or so to keep the piston lubed, but I've never done that, and most people probably don't once they find the ideal height. But that's what you're suppose to do for maintenance. I'll reiterate that I do believe this may make your chair taller than it was before on it's lowest setting, and has the range to make it much taller (drafting chair height) if desired. I've never had an issue with these before, because I always sit at the lowest setting which is around 17 inches on most chairs.

### ⭐⭐⭐⭐⭐ i am 6'6" and the 5.5 inch is perfect.
*by S***G on May 20, 2026*

as someone who is 6'6" tall my office chair has NEVER been amazing. I Put in the 11 inch piston with the 5" stroke and I'm honestly amazed.. For the first time since grammar school i can sit in a chair and my feet don't touch the ground if i expand it all the way up. truly, for someone with back problems(Former paratrooper) having my knees at the right angle and my feet flat on the ground. its unreal how much better my back feels already. easy install, pop old one out with a dead blow or sledge hammer. if the piston sticks inside the area below the seat spray some PB blaster in where it connects then spin it with a 12" pipe wrench. as soon as it starts spinning it should slide right out easily. I will update late if things go bad. an hour in and i am quite happy. NOTE: I did also add the lifelong black rubberized casters. id imagine those also raised the chair about 2"

### ⭐⭐⭐⭐⭐ Cost-effective!
*by J***T on July 29, 2026*

Excellent! It helped me not to replace the whole chair!

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-09-14*