11-16.5 Inches Office Chair Gas Cylinder Replacement Kit, TOP-ACTIVATED

About this item

- Lifetime Warranty for Absolute Peace of Mind – We stand behind the quality of our cylinder with a no-expiration-date warranty. If your cylinder leaks, sinks, or fails for any reason, simply contact us and we’ll send a brand-new replacement—no questions asked. Our goal is to keep your chair functional for years, not just months. - Class 4 Heavy Duty & 1000LBS Load Capacity – Our pneumatic piston is certified Class 4 (the highest durability rating for chair cylinders), filled with 99% pure nitrogen for safe, stable operation (avoids overheating or leakage risks). It supports up to 1000 pounds without failing—far exceeding cheap Class 2/3 alternatives that start sinking in 3-6 months. The 5.5" stroke (extends 11" to 16.5") lets you adjust height perfectly for desks of all sizes. **UNIVERSAL FIT: 98% of Top‑Activated Gaming & Ergonomic Chairs**: This gas lift fits standard 1‑1/8" (28mm) piston shafts and works with 98% of top‑activated office, gaming and ergonomic chairs, including factory‑original Herman Miller Aeron made 1996‑2012.⚠️ **NOT COMPATIBLE with side‑activated chairs**: Do not fit models with offset side‑valve hardware such as Steelcase Leap series or post‑2013 Herman Miller Aeron Remastered. Contact us and we can verify compatibility if you are unsure. - Save Big by Reviving Your Chair – Why spend $200-$500 on a new office/gaming chair when our kit fixes sinking, wobbling, or non-adjustable cylinders at a fraction of the cost? Avoid the waste of discarding a usable chair frame—our high-quality parts extend your chair’s lifespan while delivering like-new performance. Backed by a 30-day money-back guarantee, you have zero risk. - All-In-One Kit for Hassle-Free Replacement – The Office Chair Cylinder Replacement Kit includes a dedicated cylinder removal tool, anti-slip gloves, and step-by-step instruction manual. No need to hunt for extra tools or watch complicated tutorials—even beginners can remove the old cylinder and install the new one in 15 minutes or less. We also provide 24/7 customer support for any installation questions.

• - All-In-One Kit for Hassle-Free Replacement – The Office Chair Cylinder Replacement Kit includes a dedicated cylinder removal tool, anti-slip gloves, and step-by-step instruction manual. No need to hunt for extra tools or watch complicated tutorials—even beginners can remove the old cylinder and install the new one in 15 minutes or less. We also provide 24/7 customer support for any installation questions.
• - Save Big by Reviving Your Chair – Why spend $200-$500 on a new office/gaming chair when our kit fixes sinking, wobbling, or non-adjustable cylinders at a fraction of the cost? Avoid the waste of discarding a usable chair frame—our high-quality parts extend your chair’s lifespan while delivering like-new performance. Backed by a 30-day money-back guarantee, you have zero risk.
• **UNIVERSAL FIT: 98% of Top‑Activated Gaming & Ergonomic Chairs**: This gas lift fits standard 1‑1/8" (28mm) piston shafts and works with 98% of top‑activated office, gaming and ergonomic chairs, including factory‑original Herman Miller Aeron made 1996‑2012.⚠️ **NOT COMPATIBLE with side‑activated chairs**: Do not fit models with offset side‑valve hardware such as Steelcase Leap series or post‑2013 Herman Miller Aeron Remastered. Contact us and we can verify compatibility if you are unsure.
• - Class 4 Heavy Duty & 1000LBS Load Capacity – Our pneumatic piston is certified Class 4 (the highest durability rating for chair cylinders), filled with 99% pure nitrogen for safe, stable operation (avoids overheating or leakage risks). It supports up to 1000 pounds without failing—far exceeding cheap Class 2/3 alternatives that start sinking in 3-6 months. The 5.5" stroke (extends 11" to 16.5") lets you adjust height perfectly for desks of all sizes.
• - Lifetime Warranty for Absolute Peace of Mind – We stand behind the quality of our cylinder with a no-expiration-date warranty. If your cylinder leaks, sinks, or fails for any reason, simply contact us and we’ll send a brand-new replacement—no questions asked. Our goal is to keep your chair functional for years, not just months.

Specifications

ASIN

B0FSLM6DTC

Size

5.5 inch

Brand

Rythalix

Color

Black

Shape

Cylindrical

Theme

Industrial, Office

Pattern

Solid

Material

Alloy Steel

Set Name

1

Arm Style

Armless

Leg Style

wheels

Room Type

Office

Back Style

Solid Back

Brand Name

Rythalix

Item Depth

2.4 inches

Model Name

Office Chair Gas Cylinder

Seat Depth

2.4 inches

Style Name

Modern

Unit Count

1 Count

Form Factor

Cylinder