---
product_id: 549553414
title: "MySit Heavy Duty 300 LBs Office Chair Tilt Mechanism Replacement Parts, 5.9'' x 8.6\" Mounting Holes Tilt Control Mechanism(Not Standard Dimension)"
brand: "mysit"
price: "2727519₫"
currency: VND
in_stock: true
url: https://www.desertcart.vn/products/549553414-mysit-heavy-duty-300-lbs-office-chair-tilt-mechanism-replacement
store_origin: VN
region: Vietnam
---

# Non-Standard Size Tilt Control Mechanism 300LB Capacity MySit Heavy Duty 300 LBs Office Chair Tilt Mechanism Replacement Parts, 5.9'' x 8.6" Mounting Holes Tilt Control Mechanism(Not Standard Dimension)

**Brand:** mysit
**Price:** 2727519₫
**Availability:** ✅ In Stock

## Summary

> 🔧 Upgrade Your Comfort, Elevate Your Workspace!

## Quick Answers

- **What is this?** MySit Heavy Duty 300 LBs Office Chair Tilt Mechanism Replacement Parts, 5.9'' x 8.6" Mounting Holes Tilt Control Mechanism(Not Standard Dimension) by mysit
- **How much does it cost?** 2727519₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/549553414-mysit-heavy-duty-300-lbs-office-chair-tilt-mechanism-replacement)

## Best For

- mysit enthusiasts

## Why This Product

- Trusted mysit brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Custom Fit:** Designed with unique dimensions (8.6'' x 5.9'') for a tailored fit in your office chair.
- • **Sleek Modern Design:** Crafted in a contemporary style, this mechanism enhances the aesthetic of any workspace.
- • **Heavy-Duty Performance:** Engineered to support up to 300 lbs, ensuring durability and reliability.
- • **Precision Tilt Control:** Experience seamless adjustments with a single lever for tilt locking and unlocking.
- • **Effortless Height Adjustment:** Compatible with standard gas lift cylinders for easy seat height modifications.

## Overview

The MySit Heavy Duty Office Chair Tilt Mechanism Replacement is a robust solution for enhancing your office chair's functionality. With a unique non-standard size and a heavy-duty capacity of 300 lbs, this tilt control mechanism offers precision adjustments and a sleek modern design, making it the perfect upgrade for any professional workspace.

## Description

MySit Heavy Duty 300 LBs Office Chair Tilt Mechanism Replacement Parts, 5.9'' x 8.6" Mounting Holes Tilt Control Mechanism(Not Standard Dimension)

## Features

- NOT STANDARD SIZE - 8.6" length x 9" width screw mounting holes center distance with 1.1" ( 28mm )hole diameter. - This tilt mechanism is smaller shorter than the standard butterfly mechanisms. Please measure your screw mounting holes dimensions before ordering.
- HEAVY DUTY 300LBs - Replacement office chair swivel tilt control seat mechanism rated up to 300LBs.
- TILT CONTROL - Push lever in to lock tilt, pull out to unlock.
- FUNCTION - Single lever for seat height adjustment, standard 1.1" or 28mm socket inner diameter fit tapered gas lift cylinders.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Seat Depth | 0.12 inches |
| Item Weight | 4 Pounds |
| Unit Count | 1.0 Count |
| Item Dimensions D x W x H | 8.6"D x 5.9"W x 8.6"H |
| Size | 8.6" x 300LBS |
| Maximum Weight Recommendation | 300 Pounds |
| Item Shape | L-Shaped |
| Pattern | Solid |
| Theme | Modern |
| Color | Black |
| Style | Modern |
| Product Care Instructions | Wipe Clean |
| Fill Material | Foam |
| Seat Material | Iron |
| Frame Material | Iron |
| Material Type | Iron |
| Is Electric | No |
| Is Foldable | No |
| Tilting | Yes |
| Special Features | Adjustable Height |

## Product Details

- **Brand:** MySit
- **Color:** Black
- **Product Dimensions:** 8.6"D x 5.9"W x 8.6"H
- **Size:** 8.6" x 300LBS
- **Back Style:** Butterfly Back

## Images

![MySit Heavy Duty 300 LBs Office Chair Tilt Mechanism Replacement Parts, 5.9'' x 8.6" Mounting Holes Tilt Control Mechanism(Not Standard Dimension) - Image 1](https://m.media-amazon.com/images/I/712Cas1svnL.jpg)

## Available Options

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

## Questions & Answers

**Q: How to separate the cylinder from the old seat mechanism? I try to pull it very hard. But it won't budge.**
A: Make sure you have the chair still all assembled...DO NOT take the seat mechanism off the chair.  You must get a pipe wrench(like a plumber uses) make sure you adjust the wrench to have a good tight grip on just the cylinder.  Have someone hold the chair steady as you turn the wrench about one half turn...this should free the cylinder enough to pull it and the wheels off of the base tilt mechanism.  Then just take off the old mechanism and replace with the new one.  Simply lift the chair and slide it on the cykinder and wheels...it will attach easily...and your chair will be ready...and safe to use.  Best of luck.

**Q: I'm wondering if this item will fit the Homall gaming chairs.**
A: I measured the screws on the bottom of the old chair and compared it to the distance mentioned in the Amazon website for the product.  When you purchase the chair mechanism replacement you need to be sure the wholes in the product is the same as the one on the chair it is to be installed on.  Different mechanisms have different wholes the screws fit into.  You can always find one your size if the MySet does not match up with your chair.

**Q: Will this fit the furmax office chair?

https://www.amazon.com/gp/product/B01LXXM5EK/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1**
A: it is designed to be universal , 2 sets hole templates. may have to drill pilots but should work.

**Q: How much can this tilt back?**
A: You can lean way back.  I have an attoman that I put my feet on and can go to sleep with the chair release  pulled out so the back will come down.  It does not go all the way down, that would be scary.  It's up just enough to make you feel safe and cozy.  I love this item.  The last one on a chair I had broke because the weld came lose.  This item is much bigger and much stronger.  Even if your chair wears out years from now, pull the mysit tilt mechanism out and you can put it on another chair if you want to make it extra sturdy.

## Frequently Bought Together

- MySit Heavy Duty 300 LBs Office Chair Tilt Mechanism Replacement Parts, 5.9'' x 8.6" Mounting Holes Tilt Control Mechanism(Not Standard Dimension)
- DOZYANT Gas Lift Cylinder Replacement,Hydraulic Pneumatic Shock Piston Heavy Duty (450 lbs) Universal Size Fits Most Executive Office Chairs, Highest End Class 4
- 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

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.vn/products/549553414-mysit-heavy-duty-300-lbs-office-chair-tilt-mechanism-replacement](https://www.desertcart.vn/products/549553414-mysit-heavy-duty-300-lbs-office-chair-tilt-mechanism-replacement)

---

*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-24*