Fix it yourself.
Every Stealth is built to be serviced, not replaced. These are the repairs owners make most often, with the parts linked for each one.
How to change a Stealth cylinder
Replacing the gas cylinder on a Stealth chair takes about 20 minutes with basic tools and restores the chair's full height range.
What you need
- Rubber mallet
- Pipe wrench or channel locks
- Work gloves
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1
Lay the chair on its side
Put the chair on its side on a soft surface so the base and cylinder are accessible and the upholstery is protected.
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2
Separate the base from the cylinder
Grip the cylinder with a pipe wrench or channel locks and tap the base away with the rubber mallet. The taper fit is friction only, so it releases with steady taps rather than force.
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3
Free the cylinder from the seat mechanism
Tap the cylinder down and out of the seat plate. Keep hands clear of the base as it comes loose.
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4
Seat the new cylinder
Drop the new cylinder into the base, lower the seat mechanism onto it, and press down firmly. Sitting in the chair sets the taper.
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5
Test the full height range
Raise and lower the chair through its full travel a few times to confirm the lever engages and the chair holds height under load.
How to change Stealth bushings
Worn bushings cause a knock in the backrest. Replacing them takes about 15 minutes and removes the noise.
What you need
- Flathead screwdriver
- Rubber mallet
-
1
Identify the worn bushing
A knocking or clicking sound as the backrest moves usually means a bushing has worn. Flex the backrest by hand to locate which one.
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2
Ease the old bushing out
Work the flathead screwdriver under the lip of the bushing and lever it out. Worn bushings come out with little resistance.
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3
Press the new bushing in
Line the new bushing up square to the housing and tap it home with the rubber mallet until it sits flush.
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4
Check the movement
Move the backrest through its full range. The knock should be gone and the motion should feel smooth and even.
How to fix a loose Stealth backrest
A backrest with play in it is usually loose mounting hardware, which takes about 10 minutes to correct.
What you need
- Allen key set
-
1
Check the backrest hardware
Most backrest movement traces back to loosened mounting hardware rather than a failed part. Locate the bolts where the backrest meets the seat frame.
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2
Tighten in a cross pattern
Snug the bolts in a cross pattern so the backrest seats evenly against the frame. Firm is enough — over-torquing strips the thread.
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3
Re-test under load
Sit in the chair and lean back through the full range. If play remains after tightening, the Free-Float mechanism needs service — contact us with your model number.
Repair &
warranty answers.
Can you repair a Stealth chair yourself?
Stealth chairs are designed to be owner-serviced, and every component — cylinders, bushings, casters, backrests — is available as a replacement part with a walkthrough for fitting it.
Doing your own repairs does not affect the 5-year warranty. Parts are shipped from Centennial, Colorado.
- Warranty
- 5 years
- Parts
- Every component replaceable
- Serviced from
- Centennial, Colorado
Can I get replacement parts for an older Stealth chair?
Yes. Every part of every Stealth chair is available as a replacement, including on older models sold under the ErgoLab Stealth name. If a part is not listed in the parts collection, send us your model number and we will source it.
What does the Stealth 5-year warranty cover?
The Stealth warranty runs 5 years, one of the longest in the seating industry. Contact support with your model and order details to start a claim.
Do I void the warranty by repairing the chair myself?
No. Stealth chairs are designed to be owner-serviced, which is why these walkthroughs and the full parts catalogue exist. If a repair looks beyond a basic swap, contact support before going further.