---
product_id: 733835678
title: "MASTERY MART Office Chair Gas Lift Cylinder Replacement, Heavy Duty 450 LBs/ 204 KGs, Universal Size Fits Most Office Chair and Swivel Chair, 6'' Length Extension,Highest End Class 4 (Matte Black)"
brand: "mastery mart"
price: "₨11654"
currency: LKR
in_stock: true
url: https://www.desertcart.lk/products/733835678-mastery-mart-office-chair-gas-lift-cylinder-replacement-heavy-duty
store_origin: LK
region: Sri Lanka
---

# 5.5-inch adjustable height stroke 360° seamless swivel rotation Class 4 heavy-duty steel cylinder MASTERY MART Office Chair Gas Lift Cylinder Replacement, Heavy Duty 450 LBs/ 204 KGs, Universal Size Fits Most Office Chair and Swivel Chair, 6'' Length Extension,Highest End Class 4 (Matte Black)

**Brand:** mastery mart
**Price:** ₨11654
**Availability:** ✅ In Stock

## Summary

> 🚀 Upgrade your throne with Mastery Mart’s powerhouse lift—comfort that commands attention!

## Quick Answers

- **What is this?** MASTERY MART Office Chair Gas Lift Cylinder Replacement, Heavy Duty 450 LBs/ 204 KGs, Universal Size Fits Most Office Chair and Swivel Chair, 6'' Length Extension,Highest End Class 4 (Matte Black) by mastery mart
- **How much does it cost?** ₨11654 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/733835678-mastery-mart-office-chair-gas-lift-cylinder-replacement-heavy-duty)

## 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:** Crafted from premium alloy steel, this Class 4 gas lift supports up to 450 lbs (204 kg) with unmatched durability.
- • **Risk-Free Upgrade:** Backed by 100% satisfaction guarantee with responsive support, replacements, or refunds—your comfort is our mission.
- • **Elevate Your Comfort:** Adjust your chair height effortlessly with a 5.5-inch stroke for perfect ergonomic alignment.
- • **Universal Compatibility:** Fits most office and swivel chairs, including premium models like Herman Miller Aeron—measure once, upgrade forever.
- • **Say Goodbye to Chair Sinking:** Replace your worn-out cylinder easily and enjoy smooth, reliable height retention without annoying dips.

## Overview

The Mastery Mart Office Chair Gas Lift Cylinder Replacement is a heavy-duty, Class 4 pneumatic piston designed to fit most office chairs, including high-end models like Herman Miller Aeron. With a 5.5-inch adjustable height stroke and a robust 450 lbs (204 kg) capacity, it ensures smooth 360-degree swivel and eliminates sinking issues. Made from premium alloy steel in a sleek matte black finish, this universal 6-inch extension cylinder offers a durable, easy-to-install upgrade backed by a satisfaction guarantee.

## Description

gas lift

## 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 |
| Colour | Matte Black |
| Material | Alloy Steel |
| Product Dimensions | 29D x 5W x 5H Centimeters |
| Size | 6'' Travel Length |
| Back Style | Mid Back |
| Special Feature | Adjustable Height |
| Net Quantity | 1 Count |
| Seat Material Type | Polyester |
| Recommended Uses For Product | Office |
| Room Type | Office |
| Age Range (Description) | Adult |
| Included Components | Office Chair Gas Cylinder |
| Shape | Rectangular |
| Arm Style | Armless |
| Furniture base movement | Swivel |
| Indoor/Outdoor Usage | Indoor |
| Leg Style | Straight Leg |
| Reclining Position Count | 1 |
| Tilting | No |
| Is Customisable | No |
| Form Factor | Swivel chair |
| Manufacturer | Mastery Mart Co., Limited |
| Color | Matte Black |
| Shipping Weight | 1.26 Kilograms |
| Item Model Number | GAS-LIFT-GL |
| Item Part Number | MM-REP-GL04 |
| Is Assembly Required | No |
| Primary material | Alloy Steel |
| Capacity | 6'' Travel Length |

## Product Details

- **Brand:** Mastery Mart
- **Colour:** Matte Black
- **Material:** Alloy Steel
- **Product Dimensions:** 29D x 5W x 5H Centimeters
- **Size:** 6'' Travel Length
- **Item Weight:** 1.2 Kilograms
- **Back Style:** Mid Back
- **Frame Material:** Alloy Steel
- **Special Feature:** Adjustable Height
- **Net Quantity:** 1 Count

## Images

![MASTERY MART Office Chair Gas Lift Cylinder Replacement, Heavy Duty 450 LBs/ 204 KGs, Universal Size Fits Most Office Chair and Swivel Chair, 6'' Length Extension,Highest End Class 4 (Matte Black) - Image 1](https://m.media-amazon.com/images/I/41p-aRp3OcL.jpg)

## Available Options

This product comes in different **Colour, 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 Sri Lanka*
*Store origin: LK*
*Last updated: 2026-01-26*