---
product_id: 501913622
title: "9 Inches to 15 Inches Short Office Chair Cylinder Replacement, 5.5\" Stroke, Heavy Duty 1000 lbs, Lower the Seat Height by 2\", Fits for Office Chair High Base Short Person, Class4 (Sinking 2.4\")"
brand: "mastery mart"
price: "R3788"
currency: ZAR
in_stock: true
category: "Mastery Mart"
url: https://www.desertcart.co.za/products/501913622-9-inches-to-15-inches-short-office-chair-cylinder-replacement
store_origin: ZA
region: South Africa
---

# 5.5" adjustable stroke Fits most office chairs Class 4 heavy-duty steel 9 Inches to 15 Inches Short Office Chair Cylinder Replacement, 5.5" Stroke, Heavy Duty 1000 lbs, Lower the Seat Height by 2", Fits for Office Chair High Base Short Person, Class4 (Sinking 2.4")

**Brand:** mastery mart
**Price:** R3788
**Availability:** ✅ In Stock

## Summary

> 🪑 Elevate your workspace comfort with precision and power!

## Quick Answers

- **What is this?** 9 Inches to 15 Inches Short Office Chair Cylinder Replacement, 5.5" Stroke, Heavy Duty 1000 lbs, Lower the Seat Height by 2", Fits for Office Chair High Base Short Person, Class4 (Sinking 2.4") by mastery mart
- **How much does it cost?** R3788 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/501913622-9-inches-to-15-inches-short-office-chair-cylinder-replacement)

## 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

- • **Unmatched Durability:** Class 4 gas lift supports up to 1000 lbs with premium alloy steel construction.
- • **Smooth 360° Rotation:** Seamless swivel action ensures fluid movement and comfort all day.
- • **Universal Compatibility:** Designed to fit 2" base diameter and 1-1/8" piston shaft for most office chairs.
- • **Hassle-Free Installation:** Quick replacement with no special tools—get back to work faster.
- • **Precision Height Control:** Easily lower your chair by 2" for perfect ergonomic fit.

## Overview

The MASTERY MART Short Office Chair Cylinder Replacement offers a 5.5-inch adjustable stroke with a 2.4-inch sinking length, engineered from premium alloy steel to support up to 1000 lbs. Compatible with most office chairs featuring a 2-inch base and 1-1/8-inch piston shaft, this Class 4 gas lift ensures smooth 360-degree swivel and easy installation, making it the ultimate upgrade for professionals seeking ergonomic seating tailored to shorter heights.

## Description

Product description MASTERY MART Short Office Chair Cylinder Replacement, 6" Stroke, Sinking 2.4", Heavy Duty 1000 lbs, Hydraulic Pneumatic Shock Piston, Universal Size Fits Most Office Chair High Base, Class 4 (Black) Safety Warning Always follow the manufacturer's instructions for assembly and use. Do not exceed the maximum weight capacity of 1000 lbs. Keep hands and fingers away from moving parts during assembly and use. Always ensure the chair is stable and on a flat surface before use.

## Features

- 🏆【Adjustable Height 5.5 inches】The sinking length is 2.4” (60mm), lowering the chair's minimum height, as a replacement for people needing a shorter chair. Compressed height is 9.2 inches (233mm), the fully expanded length is 14.8 inches (375mm), 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 most office chairs on the market. Please confirm these measurements before making a purchase. Not compatible with 1KEA and some other brands that have a cable pin hook on the top of the cylinder.
- 🏆【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 | B0DG2HPGRV |
| Age Range Description | Adult |
| Arm Style | Armless |
| Assembly Instructions Description | Assembly required, instructions provided |
| Back Style | Mid Back |
| Best Sellers Rank | 1,017,480 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 3,459 in Furniture Accessories |
| Brand Name | MASTERY MART |
| Colour | Matte Black |
| Customer Reviews | 4.4 4.4 out of 5 stars (145) |
| Finish Type | Matte |
| Frame Material Type | Alloy Steel |
| Furniture Base Movement | Swivel |
| Furniture Finish | Matte Black |
| Included Components | No components included |
| Indoor Outdoor Usage | Indoor |
| Is Assembly Required? | No |
| Is Customizable? | No |
| Is Extendable | No |
| Is Foldable | No |
| Item Depth | 2 inches |
| Item Dimensions | 24.6 x 5.1 x 5.1 centimetres |
| Item Dimensions D x W x H | 29.5D x 5.1W x 5.1H centimetres |
| Item Shape | Rectangular |
| Leg Style | Straight Leg |
| Manufacturer | Mastery Mart Inc. |
| Manufacturer Part Number | AD6-Sinking 2.4 |
| Material Type | Alloy Steel |
| Maximum Weight Recommendation | 1000 Pounds |
| Model Name | AD6 |
| Model Number | AD6-Sinking 2.4 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Pattern | Solid |
| Product Care Instructions | Wipe Clean |
| Reclining Position Count | 1 |
| Recommended Uses For Product | Office |
| Room Type | Office |
| Seat Material Type | Alloy Steel |
| Size | 5.5'' Travel Length(Sinking 2.4") |
| Sleeping Bag Filling Material | Alloy Steel |
| Special Features | Adjustable Height |
| Style Name | Solid |
| Tilting | No |
| Unit Count | 1.0 count |

## Product Details

- **Brand:** MASTERY MART
- **Colour:** Matte Black
- **Material:** Alloy Steel
- **Product dimensions:** 29.5D x 5.1W x 5.1H centimetres
- **Size:** 5.5'' Travel Length(Sinking 2.4")

## Images

![9 Inches to 15 Inches Short Office Chair Cylinder Replacement, 5.5" Stroke, Heavy Duty 1000 lbs, Lower the Seat Height by 2", Fits for Office Chair High Base Short Person, Class4 (Sinking 2.4") - Image 1](https://m.media-amazon.com/images/I/61ChfwMVswL.jpg)
![9 Inches to 15 Inches Short Office Chair Cylinder Replacement, 5.5" Stroke, Heavy Duty 1000 lbs, Lower the Seat Height by 2", Fits for Office Chair High Base Short Person, Class4 (Sinking 2.4") - Image 2](https://m.media-amazon.com/images/I/31Y5w4rhlBL.jpg)
![9 Inches to 15 Inches Short Office Chair Cylinder Replacement, 5.5" Stroke, Heavy Duty 1000 lbs, Lower the Seat Height by 2", Fits for Office Chair High Base Short Person, Class4 (Sinking 2.4") - Image 3](https://m.media-amazon.com/images/I/41S6wd1EHuL.jpg)
![9 Inches to 15 Inches Short Office Chair Cylinder Replacement, 5.5" Stroke, Heavy Duty 1000 lbs, Lower the Seat Height by 2", Fits for Office Chair High Base Short Person, Class4 (Sinking 2.4") - Image 4](https://m.media-amazon.com/images/I/51g3a2JhH0L.jpg)
![9 Inches to 15 Inches Short Office Chair Cylinder Replacement, 5.5" Stroke, Heavy Duty 1000 lbs, Lower the Seat Height by 2", Fits for Office Chair High Base Short Person, Class4 (Sinking 2.4") - Image 5](https://m.media-amazon.com/images/I/41u6oZ4WqSL.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.

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-11-15*