---
product_id: 176752688
title: "Mastery Mart Office Chair Base Replacement for Office/Desk/Swivel Chair with Cap, Universal Gas Cylinder Socket and Caster Sockets, 28\"(70 cm) Heavy Duty 2200 Lbs/1000 Kg (Matte Black)"
brand: "mastery mart"
price: "$10565"
currency: MXN
in_stock: true
reviews_count: 8
category: "Mastery Mart"
url: https://www.desertcart.mx/products/176752688-mastery-mart-office-chair-base-replacement-for-office-desk-swivel
store_origin: MX
region: Mexico
---

# 28-inch universal diameter fit Standard 2-inch gas cylinder socket 2200 lbs heavy-duty load capacity Mastery Mart Office Chair Base Replacement for Office/Desk/Swivel Chair with Cap, Universal Gas Cylinder Socket and Caster Sockets, 28"(70 cm) Heavy Duty 2200 Lbs/1000 Kg (Matte Black)

**Brand:** mastery mart
**Price:** $10565
**Availability:** ✅ In Stock

## Summary

> 🪑 Upgrade your throne with rock-solid confidence!

## Quick Answers

- **What is this?** Mastery Mart Office Chair Base Replacement for Office/Desk/Swivel Chair with Cap, Universal Gas Cylinder Socket and Caster Sockets, 28"(70 cm) Heavy Duty 2200 Lbs/1000 Kg (Matte Black) by mastery mart
- **How much does it cost?** $10565 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/176752688-mastery-mart-office-chair-base-replacement-for-office-desk-swivel)

## 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

- • **Effortless Installation:** Comes with all necessary hardware and clear instructions for a quick 15-minute upgrade—no professional help needed.
- • **Universal Compatibility:** Fits almost every office, gaming, and swivel chair with standard 28-inch diameter and universal caster sockets.
- • **Sleek Matte Black Finish:** Modern, low-profile design that elevates your workspace aesthetics while resisting wear and tear.
- • **Reliable Stability Guaranteed:** Meets BIFMA and ANSI industry standards ensuring a wobble-free, secure seating experience every time.
- • **Unmatched Strength & Durability:** Engineered with premium-grade metal to support up to 2200 lbs, built to last through years of daily use.

## Overview

The Mastery Mart Office Chair Base Replacement is a heavy-duty, matte black metal base designed to support up to 2200 lbs. With a universal 28-inch diameter and standard 2-inch gas cylinder socket, it fits most office, gaming, and swivel chairs. Engineered to meet BIFMA and ANSI standards, it offers superior durability and stability. Easy to install with included hardware and instructions, this base transforms your chair into a sturdy, stylish centerpiece for any professional workspace.

## Description

Mastery Mart Office Chair Base Replacement for Office/Desk/Swivel Chair with Cap, Universal Gas Cylinder Socket and Caster Sockets, 28"(70 cm) Heavy Duty 2200 Lbs/1000 Kg (Matte Black) : desertcart.co.uk: Home & Kitchen

Review: Metal Chair Base - Bought as a replacement for the ABS plastic base on my chair. The black metal low profile base comes in a shoebox sized package. Assembly is required. There are 5 spokes, a central Hub, and a cosmetic plastic cover. All parts are individually plastic wrapped to protect the powder coat. Also supplied is a packet of m6 hex bolts and an allen key/hex wrench. There is only one way a spoke will fit on the hub and the spokes are identical. My hub had two drilled holes per spoke but only the one closest to the center had threads to receive the bolt. There is a reasonable friction fit on the spokes so take care to align the the holes for the bolts when sliding the spoke onto the hub as it may take a little bit of force to move it around. Base is exactly the same size and height as the plastic one it replaced. Center opening is a standard 2"/50mm and my gas lift fit perfectly. No wheels were supplied but again the spokes have sockets for a standard 11mm caster and the wheels from the original base fit perfectly. Assembly was straightforward and took about 15 minutes. It was delivered at 12.30 and I was sat in my chair writing this review by 1pm. Reassembling the Chair was straightforward (!! remember to put the plastic cover on the gas strut first!)! Probably the most difficult bit was pulling the wheels off the old base.(firm grip and steady pull while twisting) My immediate impression is that it feels solid and sturdy. It seems well made with clean looking welds. I'm a big fella and use my chair daily. If anything goes wrong I'll be back here to tell you about it. Tip. Check on the hex bolts after a week or so, and regularly after that as they will almost certainly loosen over time. Tape the allen key to the bottom of the chair so it is handy if you need it.
Review: Reassuringly well made - I bought this steel replacement for a plastic cheapie which was fitted to my Melokea S1 chair, this failed after only 6 months use, despite it claiming to be "heavy duty". I was tempted to go for a one-piece aluminium part, but the one I was looking at was only rated for 400 lbs, whereas this one is 2400! The package is neatly packed and fits very precisely together, 5 Allen keyed bolts holding the legs onto the very solid steel central part. Took no more than 5 mins to put together, but don't forget to put the plastic guard over the end of the seat post BEFORE fitting the post into the base, as once you've sat on it, it's difficult to remove!! There is no hint of movement in the legs themselves once the Allen keys are fitted, given the quality of the steelwork and the precision with which they fit together, I can see why this item is relatively expensive (I paid £43) but over all I think the product is good value for money. If only chair manufacturers fitted decent bases in the first place..... but I guess this would make them a lot more expensive. I'll certainly never buy a chair with plastic base again, particularly now I have this metal one! I went for a nice set of soft rolling double castors as well, much nicer than the originals. So OK I have spent as much repairing the chair as it originally cost, but at least I know the base won't fail!

## Features

- WHAT'S IN THE BOX: 1 Set of Office Chair Black Base *************************************************************, Installation Package, 1 Base Cap.
- PREMIUM GRADE METAL MADE STRONG BASE *************************************************************: This Heavy Duty Chrome Base Stool is manufactured to meet the Office Chair's highest industry standard (BIFMA and ANSI). The reinforced metal and durability of the base will ensure your chair's base is firmly sound for many years.
- UNIVERSAL SIZE: The office chair base works perfectly with almost every office chair, gaming chair, desk chair, task chair and swivel chair on the market. The office chair base ************************************************************* has universal sockets that will fit your original casters and gas lift cylinder.
- SIZE DETAIL: Office Chair Base Size in Diameter: 28’’ (70 cm). Chrome Base Leg Length: 12.6’’ (32 cm). Standard Gas Cylinder Socket: 2’’ (5 cm). Standard Caster Sockets: 7/16’’ x 7/8’’ (11mm x 22mm). Height of the Chrome Base: 4’’ (10 cm)
- 100% SATISFACTION ************************************************************* - Very easy installation and ************************************************************* with our simple and clear instruction sheet. If this doesn't fit your chair, you can simply ************************************************************* it for a full *************************************************************.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07ZY36NJ1 |
| Age Range Description | Adult |
| Arm Style | Armless |
| Back Style | Solid Back |
| Best Sellers Rank | 72,395 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 273 in Desk Chairs |
| Brand | MASTERY MART |
| Brand Name | MASTERY MART |
| Colour | Black |
| Customer Reviews | 4.7 out of 5 stars 2,019 Reviews |
| Finish Type | Matte |
| Frame Material Type | Metal |
| Furniture Base Movement | Swivel |
| Furniture Finish | Black,Matte |
| Included Components | Caster |
| Indoor Outdoor Usage | Indoor |
| Is Assembly Required? | Yes |
| Is Customizable? | No |
| Is Electric | No |
| Is Foldable | No |
| Item Depth | 70 centímetros |
| Item Dimensions | 70 x 70 x 10 centimetres |
| Item Dimensions D x W x H | 70D x 70W x 10H centimetres |
| Item Shape | Round |
| Item Weight | 4.95 Pounds |
| Item weight | 4.95 Pounds |
| Leg Style | Tapered Leg |
| Manufacturer | Mastery Mart Co., Limited |
| Material | Metal |
| Material Type | Metal |
| Maximum Weight Recommendation | 997.9 kg |
| Model Number | Mastery Mart |
| Pattern | Solid |
| Product Care Instructions | Wipe Clean |
| Product dimensions | 70D x 70W x 10H centimetres |
| Reclining Position Count | 1 |
| Recommended Uses For Product | Gaming, Office |
| Room Type | Game Recreation Room, Office |
| Seat Height | 28 Inches |
| Seat Material Type | Metal |
| Size | 70D x 70W x 10H cm |
| Sleeping Bag Filling Material | Foam |
| Special Features | 11mm x 22mm, Durable, Easy to Replace and Install, Heave Duty, Quality Guaranteed |
| Style Name | Contemporary |
| Surface Recommendation | Hard Floor |
| Theme | Contemporary |
| Tilting | No |
| Unit Count | 1.0 count |

## Product Details

- **Brand:** MASTERY MART
- **Colour:** Black
- **Material:** Metal
- **Product dimensions:** 70D x 70W x 10H centimetres
- **Size:** 70D x 70W x 10H cm

## Images

![Mastery Mart Office Chair Base Replacement for Office/Desk/Swivel Chair with Cap, Universal Gas Cylinder Socket and Caster Sockets, 28"(70 cm) Heavy Duty 2200 Lbs/1000 Kg (Matte Black) - Image 1](https://m.media-amazon.com/images/I/51WVM0Ag+GL.jpg)
![Mastery Mart Office Chair Base Replacement for Office/Desk/Swivel Chair with Cap, Universal Gas Cylinder Socket and Caster Sockets, 28"(70 cm) Heavy Duty 2200 Lbs/1000 Kg (Matte Black) - Image 2](https://m.media-amazon.com/images/I/61TE6JnVcTS.jpg)
![Mastery Mart Office Chair Base Replacement for Office/Desk/Swivel Chair with Cap, Universal Gas Cylinder Socket and Caster Sockets, 28"(70 cm) Heavy Duty 2200 Lbs/1000 Kg (Matte Black) - Image 3](https://m.media-amazon.com/images/I/61kIXwFKfhS.jpg)
![Mastery Mart Office Chair Base Replacement for Office/Desk/Swivel Chair with Cap, Universal Gas Cylinder Socket and Caster Sockets, 28"(70 cm) Heavy Duty 2200 Lbs/1000 Kg (Matte Black) - Image 4](https://m.media-amazon.com/images/I/61lyPEj9euL.jpg)
![Mastery Mart Office Chair Base Replacement for Office/Desk/Swivel Chair with Cap, Universal Gas Cylinder Socket and Caster Sockets, 28"(70 cm) Heavy Duty 2200 Lbs/1000 Kg (Matte Black) - Image 5](https://m.media-amazon.com/images/I/71Pv1f4UxzS.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: Would this work as a replacement base for a DXRacer king series chair?**
A: It's a standard diameter so yes. I've replaced the base on an x-rocker chair, and it made an immediate improvement

**Q: Hi, i bought homcom pu leather office w/massage function, high back-red &the base's gone - split into 2. would this one be suitable as a replacement?**
A: yes it would

**Q: Struggling to remove the old base from my old is it possible that the base and cylinder is one piece?**
A: I know this is a very old comment but for anyone else who might see it, the cylinder can be hard to remove.
There's many YouTube videos about it but what worked for me with a really stubborn one was having half the legs of the base on the side of a bed and hammering the cylinder directly from the bottom, hard. 
I'd spent 10 minutes trying other methods but this eventually worked.

**Q: I have a gas lift that starts off 40cm then expands to 50cm. I'm unsure if this base will work with this or not?**
A: This 'spider' like all these seat bases are universal; I ordered mine as a replacement for a defective existing base it fitted and worked very well.  You should have no problems.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Metal Chair Base
*by F***L on 9 June 2025*

Bought as a replacement for the ABS plastic base on my chair. The black metal low profile base comes in a shoebox sized package. Assembly is required. There are 5 spokes, a central Hub, and a cosmetic plastic cover. All parts are individually plastic wrapped to protect the powder coat. Also supplied is a packet of m6 hex bolts and an allen key/hex wrench. There is only one way a spoke will fit on the hub and the spokes are identical. My hub had two drilled holes per spoke but only the one closest to the center had threads to receive the bolt. There is a reasonable friction fit on the spokes so take care to align the the holes for the bolts when sliding the spoke onto the hub as it may take a little bit of force to move it around. Base is exactly the same size and height as the plastic one it replaced. Center opening is a standard 2"/50mm and my gas lift fit perfectly. No wheels were supplied but again the spokes have sockets for a standard 11mm caster and the wheels from the original base fit perfectly. Assembly was straightforward and took about 15 minutes. It was delivered at 12.30 and I was sat in my chair writing this review by 1pm. Reassembling the Chair was straightforward (!! remember to put the plastic cover on the gas strut first!)! Probably the most difficult bit was pulling the wheels off the old base.(firm grip and steady pull while twisting) My immediate impression is that it feels solid and sturdy. It seems well made with clean looking welds. I'm a big fella and use my chair daily. If anything goes wrong I'll be back here to tell you about it. Tip. Check on the hex bolts after a week or so, and regularly after that as they will almost certainly loosen over time. Tape the allen key to the bottom of the chair so it is handy if you need it.

### ⭐⭐⭐⭐⭐ Reassuringly well made
*by P***B on 30 November 2024*

I bought this steel replacement for a plastic cheapie which was fitted to my Melokea S1 chair, this failed after only 6 months use, despite it claiming to be "heavy duty". I was tempted to go for a one-piece aluminium part, but the one I was looking at was only rated for 400 lbs, whereas this one is 2400! The package is neatly packed and fits very precisely together, 5 Allen keyed bolts holding the legs onto the very solid steel central part. Took no more than 5 mins to put together, but don't forget to put the plastic guard over the end of the seat post BEFORE fitting the post into the base, as once you've sat on it, it's difficult to remove!! There is no hint of movement in the legs themselves once the Allen keys are fitted, given the quality of the steelwork and the precision with which they fit together, I can see why this item is relatively expensive (I paid £43) but over all I think the product is good value for money. If only chair manufacturers fitted decent bases in the first place..... but I guess this would make them a lot more expensive. I'll certainly never buy a chair with plastic base again, particularly now I have this metal one! I went for a nice set of soft rolling double castors as well, much nicer than the originals. So OK I have spent as much repairing the chair as it originally cost, but at least I know the base won't fail!

### ⭐⭐⭐⭐⭐ Really well made
*by M***S on 26 October 2024*

When this turned up as a small self assembly kit I was dubious that it would meet expectations; surprisingly after assembly the chair base was very sturdy and strong and I am really pleased with it. If I ever needed a replacement chair base again I would be choosing this! Great value for money, easy assembly, looks great and it works really well.

## Frequently Bought Together

- MASTERY MART Heavy Duty Office Chair Base Replacement, 2500 Lbs, 28"(70 cm), Metal Desk Chair Base Replacement Parts with Universal Gas Cylinder Hole and Casters Sockets, Matte Black
- Office Chair Caster Wheels Set of 5 Heavy Duty & Safe for All Floors Including Hardwood 2" Rubber Replace Office Chair Mat, Universal Standard Stem Size Fits 99%-Grey
- 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 (Polished Steel)

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*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-02-17*