8.4-10.9 Inches Office Chair Cylinder Replacement, TOP-Activated Heavy Duty 1000lbs Class 4 Hydraulic Lift, Universal Pneumatic Piston Fit for Desk/Gaming Chairs, not for SIDE-ACTIVATED

HEIGHT-MATCHED SIZING GUIDE: No Guesswork! Skip wrong-size hassle! Exact fits by U. S.
height: 2.4"
Travel Length (suitable for heights: 4957). Ensures 90° knee bends for healthy posture. Multiple sizes availableshare your height/desk size for personalized picks.
**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. SILENT 360° ROTATION + 2.4" HEIGHT RANGE (Perfect for
Standing Office Chair): Annoyed by loud chair adjustments disrupting libraries or open offices? Our office chair hydraulic cylinder glides at <25dBquieter than a whisperso you can adjust without disturbing others. Weve designed it to fit standing desks, with a 2.4" height range ( 8.4" to 10.9" ) for personalized comfort. To make setup easier, we include installation glovesno extra supplies needed, just a smooth process. CLASS 4
INDUSTRY STANDARD SIZE: 1000LBS Capacity +
BIFMA Certification: We know standard desk chair cylinders often fail under heavy useleaving you frustrated with wobbly or unsafe seating. Our office chair cylinder is built for industrial-grade reliability, with BIFMA-certified hydraulic components. We ensure it supports 3X more weight (1000lbs) than ordinary cylinders, so you can trust it for heavy-duty needs.
EXTRA HEAVY-DUTY: We know pneumatic piston cylinder safety is non-negotiablecheap options leak or fail prematurely. Our hydraulic cylinder has Class 4 components (highest durability rating for chair parts) and an explosion-proof design with no sudden malfunctions; lab-tested to last 10+ years in high-wear spaces like gyms and workshops, it outperforms low-grade alternatives that break down in months, and we ensure it stands up to rigorous use