🌍 Worldwide shipping · 30-day returns · Rated Excellent on Trustpilot ★★★★½
Price
$88.99
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7 Inches to 11 Inches Short Office Chair Cylinder Replacement, 4'' Stroke, Heavy Duty 1000 lbs, Lower the Chair Height by 2 Inches, Fits for Office Chair High Base Short Person, Class 4 (Sinking 2.4")

$88.99

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4 available
Color: Matte Black
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About this item
  • 🏆【Adjustable Height 4 inches】The sinking length is 2.4” (60mm), compressed height is 7.48 inches (190mm), the fully expanded height is 11.2 inches (284mm), stroke length is 4 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.
  • 🏆【Upgrade 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.
  • 🏆【Easy Installation and Smooth Movement】 Very easy installation and replacement. Piston stroke that goes up and down and rotates 360 degrees.
  • 🏆【100% Satisfaction Guaranteed】If you don't absolutely enjoy it, we guarantee you that we will reimburse you for 100% of your order.
Product details
Brand
MASTERY MART
Manufacturer
Mastery Mart Co., Limited
Material
Alloy Steel
Colour
Matte Black
Size
4'' Travel Length(Sinking 2.4")
Weight
0.80 kg
Model number
AD4
Part number
AD4

Customer reviews

What customers say about Bigamart

10 Trustpilot reviews total, with 2 shown at a time.

Trustpilot
Excellent
4.5 average rating
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S
Sigalit
🇮🇱 · January 2026

I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.

V
Verified buyer
🇦🇺 · November 2025

The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.

Showing 12 of 10 reviews

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