---
product_id: 290604372
title: "Mastery Mart Office Chair Base Replacement, 28 Inch Heavy Duty(2500 Lbs) Metal Leg, Reinforced to Repair Swivel Gaming Chair Bottom Part with Universal Caster and Gas Cylinder Size (Silver)"
brand: "mastery mart"
price: "€ 587.94"
currency: EUR
in_stock: true
reviews_count: 13
category: "Mastery Mart"
url: https://www.desertcart.nl/products/290604372-mastery-mart-office-chair-base-replacement-28-inch-heavy-duty
store_origin: NL
region: Netherlands
---

# 28-inch reinforced metal base diameter 2500 lbs heavy-duty load capacity Universal fit for most office & gaming chairs Mastery Mart Office Chair Base Replacement, 28 Inch Heavy Duty(2500 Lbs) Metal Leg, Reinforced to Repair Swivel Gaming Chair Bottom Part with Universal Caster and Gas Cylinder Size (Silver)

**Brand:** mastery mart
**Price:** € 587.94
**Availability:** ✅ In Stock

## Summary

> 🪑 Reinforce your throne with power and style — because your chair deserves a heavyweight upgrade!

## Quick Answers

- **What is this?** Mastery Mart Office Chair Base Replacement, 28 Inch Heavy Duty(2500 Lbs) Metal Leg, Reinforced to Repair Swivel Gaming Chair Bottom Part with Universal Caster and Gas Cylinder Size (Silver) by mastery mart
- **How much does it cost?** € 587.94 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/290604372-mastery-mart-office-chair-base-replacement-28-inch-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

- • **Seamless Universal Compatibility:** Fits virtually all swivel, gaming, desk, and task chairs with standard caster and gas cylinder sockets—no guesswork needed.
- • **Effortless Upgrade & Installation:** Quick 15-minute assembly lets you swap your worn-out base and get back to work or play without missing a beat.
- • **Compact Footprint, Maximum Comfort:** Slightly smaller than typical bases to prevent foot bumps—comfort meets smart design for your daily grind.
- • **Unmatched Strength for Every Workday:** Engineered to support up to 2500 lbs, this base redefines durability for heavy-duty office and gaming chairs.
- • **Sleek Chrome Finish with a Modern Edge:** Polished silver metal base adds a premium, professional look that elevates your workspace aesthetic instantly.

## Overview

The Mastery Mart Office Chair Base Replacement is a 28-inch heavy-duty metal base designed to support up to 2500 lbs. Crafted from premium-grade reinforced metal and finished in polished silver chrome, it offers universal compatibility with most office, gaming, and swivel chairs. Featuring standard caster and gas cylinder sockets, it ensures a quick, tool-free installation and a compact footprint that enhances comfort and workspace aesthetics.

## Description

Buy Mastery Mart Office Chair Base Replacement, 28 Inch Heavy Duty(2500 Lbs) Metal Leg, Reinforced to Repair Swivel Gaming Chair Bottom Part with Universal Caster and Gas Cylinder Size (Silver): Casters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Excellent Replacement Office Chair Base!!! - After receiving little assistance from my chair manufacturer’s support team, I decided to purchase this office chair base replacement, and I’m very glad I did. The product has an excellent appearance, finished in a polished jet black, and feels extremely sturdy. Assembly was quick and straightforward. I simply transferred the wheels from my old base, seated the chair into the center cylinder, and was back to using it in under 15 minutes. An added benefit is that the footprint is slightly smaller, by a couple of inches, than the original base, so my feet no longer bump into it while sitting. Overall, this replacement appears to be of higher quality than the original, and I expect it will last even longer.
Review: Solid Base for Turning Office Chair into 400lb + Big and Tall Chair - I have a Flexispot C7...awesome ergonomic office chair, until, the plastic base literally split under my big and tall weight. It was rated to 300lbs, and I'm just a bit over that...but, after 8 mos, it failed. So what was I going to do? I played with getting another office chair, rated to heavier weights, but my C7 is pretty darn confortable, I sit for 8-12 hrs per day as I work from home. Then, I found THIS solution. Inexpensive, and rated to 2500...I figured I'd give it a shot. It arrived in less than a week this morning, and 10 mins of simple assembly and my C7 is now ready to roll again! What a great solution to a problem that many of these "normal sized people" office chairs present. Recommend you get the Lifelong Office Chair Wheels Replacement Rubber Chair Casters for Hardwood Floors and Carpet, Set of 5, Heavy Duty Casters for Chairs to Replace Office Chair Mats - Fits 98%...as well, for hardwood floors.

## Features

- ➤ WHAT'S IN THE BOX: 1 Set of Office Chair Silver Base Replacement, Installation Package, 1 Base Cap.
- ➤ PREMIUM GRADE METAL MADE STRONG BASE REPLACEMENT: 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 replacement 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)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07ZY3TZCQ |
| Assembled Height | 11 centimeters |
| Assembled Length | 70 centimeters |
| Assembled Width | 70 centimeters |
| Best Sellers Rank | #44,741 in Office Products ( See Top 100 in Office Products ) #69 in Office Furniture Casters |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,645) |
| Date First Available | July 19, 2019 |
| Item Weight | 4.4 pounds |
| Item model number | CHAIR |
| Product Dimensions | 27.56 x 27.56 x 3.94 inches |
| Weight | 3 Kilograms |

## Product Details

- **Brand:** MASTERY MART
- **Color:** Silver
- **Material:** Metal
- **Product Dimensions:** 28"D x 28"W x 4"H
- **Size:** 70 cm

## Images

![Mastery Mart Office Chair Base Replacement, 28 Inch Heavy Duty(2500 Lbs) Metal Leg, Reinforced to Repair Swivel Gaming Chair Bottom Part with Universal Caster and Gas Cylinder Size (Silver) - Image 1](https://m.media-amazon.com/images/I/51xVt7KLnNL.jpg)
![Mastery Mart Office Chair Base Replacement, 28 Inch Heavy Duty(2500 Lbs) Metal Leg, Reinforced to Repair Swivel Gaming Chair Bottom Part with Universal Caster and Gas Cylinder Size (Silver) - Image 2](https://m.media-amazon.com/images/I/61rDXrOOM5S.jpg)
![Mastery Mart Office Chair Base Replacement, 28 Inch Heavy Duty(2500 Lbs) Metal Leg, Reinforced to Repair Swivel Gaming Chair Bottom Part with Universal Caster and Gas Cylinder Size (Silver) - Image 3](https://m.media-amazon.com/images/I/613jOJ4TcIS.jpg)
![Mastery Mart Office Chair Base Replacement, 28 Inch Heavy Duty(2500 Lbs) Metal Leg, Reinforced to Repair Swivel Gaming Chair Bottom Part with Universal Caster and Gas Cylinder Size (Silver) - Image 4](https://m.media-amazon.com/images/I/61MzEESTjGS.jpg)
![Mastery Mart Office Chair Base Replacement, 28 Inch Heavy Duty(2500 Lbs) Metal Leg, Reinforced to Repair Swivel Gaming Chair Bottom Part with Universal Caster and Gas Cylinder Size (Silver) - Image 5](https://m.media-amazon.com/images/I/61Rr1BqvgLL.jpg)

## Available Options

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

## Questions & Answers

**Q: How secure is the base of the office chair? Does it have a locking mechanism and sturdy back support?**
A: The office chair base is designed with safety in mind. It features a reliable locking mechanism to keep the base stable and secure, along with sturdy base support to prevent accidental tilting or damage, ensuring your safety during use.

**Q: What materials are used in the construction of the office chair base? Is it sturdy and durable?**
A: The office chair base is made from high-quality materials to ensure it is sturdy up to max capacitu of 2500 LBs and durable, avoiding any cheap feel. Every component undergoes strict quality control, providing reliable support that lasts long-term.

**Q: Is the office chair base easy to assemble? Does it come with an installation guide and tools?**
A: Yes, the office chair base is designed for easy assembly. It comes with a clear installation guide and all necessary tools, making it simple to replace your existing base—even if you have no prior experience.

**Q: How stable is the office chair base? Can it adapt to different floor surfaces?**
A: The office chair base is designed for excellent stability, minimizing the risk of tipping. Whether on tile, hardwood, or carpet, it adapts well to various floor types, providing steady support in any environment.

**Q: Is the office chair base easy to clean and maintain? Does it require special tools?**
A: Yes, the office chair base is designed for easy cleaning and maintenance. Its simple design means no special tools or complicated steps are needed, allowing you to keep the base in great condition with minimal effort.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent Replacement Office Chair Base!!!
*by J***. on February 10, 2026*

After receiving little assistance from my chair manufacturer’s support team, I decided to purchase this office chair base replacement, and I’m very glad I did. The product has an excellent appearance, finished in a polished jet black, and feels extremely sturdy. Assembly was quick and straightforward. I simply transferred the wheels from my old base, seated the chair into the center cylinder, and was back to using it in under 15 minutes. An added benefit is that the footprint is slightly smaller, by a couple of inches, than the original base, so my feet no longer bump into it while sitting. Overall, this replacement appears to be of higher quality than the original, and I expect it will last even longer.

### ⭐⭐⭐⭐⭐ Solid Base for Turning Office Chair into 400lb + Big and Tall Chair
*by M***Y on August 28, 2024*

I have a Flexispot C7...awesome ergonomic office chair, until, the plastic base literally split under my big and tall weight. It was rated to 300lbs, and I'm just a bit over that...but, after 8 mos, it failed. So what was I going to do? I played with getting another office chair, rated to heavier weights, but my C7 is pretty darn confortable, I sit for 8-12 hrs per day as I work from home. Then, I found THIS solution. Inexpensive, and rated to 2500...I figured I'd give it a shot. It arrived in less than a week this morning, and 10 mins of simple assembly and my C7 is now ready to roll again! What a great solution to a problem that many of these "normal sized people" office chairs present. Recommend you get the Lifelong Office Chair Wheels Replacement Rubber Chair Casters for Hardwood Floors and Carpet, Set of 5, Heavy Duty Casters for Chairs to Replace Office Chair Mats - Fits 98%...as well, for hardwood floors.

### ⭐⭐⭐⭐⭐ Great replacement.
*by B***N on January 26, 2026*

I’m a big guy, and the plastic base my chair came with wasn’t up to the job, leading to a catastrophic failure and a fall. This replacement base is much heavier duty.

## Frequently Bought Together

- Mastery Mart Office Chair Base Replacement, 28 Inch Heavy Duty(2500 Lbs) Metal Leg, Reinforced to Repair Swivel Gaming Chair Bottom Part with Universal Caster and Gas Cylinder Size (Silver)
- 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
- 9 Inches to 13 Inches Office Chair Cylinder Replacement, 4" Stroke, Heavy Duty 1000lbs, Hydraulic Pneumatic Shock Piston, Universal Fit for Most Office Chairs, Class 4, Polished Steel

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-03-04*