We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Silver 5.5 inch gas lift cylinder, compressed 11.4 inches, extended 16.9 inches, universal office chair replacement

BFKK

BFKK 5.5 inch Heavy Duty Gas Lift Cylinder Silver

SKU CH-NBYM-BJ89S

A 5.5 inch heavy-duty gas lift cylinder replaces office or gaming chair pistons, adjusting 11.4 to 16.9 inches, supporting 1000 lbs, with silent 360 rotation and SGS-tested.

  • TypeChair & Furniture Accessories
  • Adjustable 5.5 inch stroke raises your seat 5.5 inches
  • Supports up to 1000 lbs for heavy-duty use
  • Silent 360 degree rotation keeps operation smooth
  • SGS tested and BIFMA certified for safety
  • Compressed 11.4 inches, extended 16.9 inches overall length

Universal Chair Compatibility

This heavy-duty gas lift cylinder fits almost all office chairs, including salon, executive, work chairs and rolling stools. The universal sizing ensures a straightforward replacement for worn or broken pistons. It supports a maximum load of 1000LBS, far exceeding standard cylinders. The thickened outer steel construction meets SGS and BIFMA safety certifications.

Build Integration

The cylinder compresses to 11.4 inches and extends to 16.9 inches, delivering 5.5 inches of adjustable travel. Silent 360° rotation and aerodynamic impact design allow smooth, noise-free height changes and swivel motion. No additional adapters or tools are mentioned, so it slots into existing chair bases directly. The explosion-proof build handles higher pressure for long-term stability.

Buyer Fit

Ideal for users needing a high-capacity, certified replacement that eliminates wobble and noise on heavy daily use. Not suited for buyers who require a shorter or longer stroke than 5.5 inches. Those with non-standard chair bases that deviate from universal dimensions should verify fit before purchase. It serves professional and gaming seating alike.

Highlights

  • Adjustable 5.5 inch stroke raises your seat 5.5 inches
  • Supports up to 1000 lbs for heavy-duty use
  • Silent 360 degree rotation keeps operation smooth
  • SGS tested and BIFMA certified for safety
  • Compressed 11.4 inches, extended 16.9 inches overall length

Specifications

TypeChair & Furniture Accessories

Questions about this item

How much height adjustment does the 5.5 inch gas lift cylinder provide?

The cylinder compresses to 11.4 inches and extends to 16.9 inches, giving 5.5 inches of adjustable travel.

Does the cylinder stay quiet and cool during all-day office use?

It is designed for silent 360° rotation with no aerodynamic noise, so colleagues will not hear it even when you recline.

What chair base diameter does the universal-size cylinder fit?

The universal-size piston fits almost all office, salon, executive and gaming chairs as well as rolling stools on the market.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.