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chairpartsonline

Replacement Hardware Repair Kit for Office Chair Gas Lift Cylinder - Includes Clip, washers, & Bearing - S4451-K

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Availability: In Stock.
Fulfilled by Amazon
Arrives Wednesday, Oct 21
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Features

  • Hardware repair kit for office chair gas lift cylinders
  • Contains: 1 Rubber Bumper, 1 Silver Washer, 2 Black Washers, 1 White Bearing Pack, 1 Retaining Clip
  • Attachment hardware for lower area of office chair gas lift pneumatic cylinder
  • These parts fit the large majority of standard gas lift cylinders in office chairs - Most but not all
  • Note: Gas lift piston in picture is for visual purposes only and is not included. Only the hardware kit is included.

Description

Useful for replacing or repairing worn out or missing attachment hardware on an office chair gas lift cylinder. Attaches the gas lift piston cylinder to the larger black or chrome support column that fits into the 5 leg chair base. Instructions for correct assembly included It is critical that this hardware set is installed in the correct order for proper & safe usage. Functional note: If your cylinder is sinking while sitting in the chair, the entire gas cylinder must be replaced as an internal seal has worn out. Parts note: Gas lift piston in picture is for visual purposes only and is not included. Only the hardware kit is included.

Brand: chairpartsonline


Color: Metal


Material: Rubber


Size: 7 inches x 4 inches x 0 inches


Item Weight: 18.14 g


Brand Name: chairpartsonline


Additional Features: Fits Most Standard Gas Lift Cylinders


Unit Count: 1 Count


Recommended Uses For Product: Indoor


Room Type: Office


Age Range Description: Adult


Model Name: S4451-K


Surface Recommendation: Hard Floor


Indoor Outdoor Usage: Indoor


Model Number: S4451-K


UPC: 735201994666


Number of Packs: 1


Manufacturer: chairpartsonline


Manufacturer Part Number: S4451-K


Set Name: Office Chair Gas Lift Cylinder Hardware Repair Kit


Number of Items: 1


Furniture Base Movement: Glide


Reclining Position Count: Not Obtainable


Color: Metal


Style Name: Modern


Pattern: Solid


Finish Types: Chrome


Theme: modern


Shape: Cylindrical


Arm Style: Armless


Furniture Finish: Chrome


Cushion Style: Plain


Leg Style: Straight Leg


Form Factor: Recliner


Size: 7 inches x 4 inches x 0 inches


Item Weight: 18.14 g


Item Depth: 7 inches


Item Dimensions: 4 x 7 inches


Material Type: Rubber


Frame Material Type: Metal


Product Care Instructions: Wipe Clean


Seat Material: Rubber


Fill Material: Rubber


Maximum Weight Recommendation: 300 pounds


Assembly Instructions Description: Included


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Oct 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • WH part worked as required. Poor packaging not boxed. Heavy item ripped thru paper envelope.
Part fit & worked well! Package bad. Heavy part was loose in paper envelope (no box). Ripped through & hanging out of package when arrived. Had to carefully assure was useable & not damaged. Could have harmed someone or other packages if fell out.
Reviewed in the United States on September 20, 2026 by Lisa
    • Fantastic product!
This item is amazing. It's cheap, of good quality, fits an Aeron chair perfectly, works very well, and is easy to install. Buying this can save you over a hundred dollars over hiring a technician.
Reviewed in the United States on April 7, 2026 by Disgruntled
    • PERFECT!!
I bought a chair off of Marketplace because I liked the retro cover on it, not because it "sat well." Been trouble since I got it home. I've already done work on cleaning it and reattaching the upholstery. It's probably 15 years old. So, the other day, a pile of what looked like greasy graphite appeared below it--under closer inspection, there were assorted ballbearings in the pile. What fresh hell...? A few YouTube videos helped me identify the problem and what I needed to fix it. The gas cylinder seemed to be fine but the uppy/downy lever never did work. I have a height I want--I would not be a person who takes it up and down figuring that out. Anyway, I was so glad to see this kit available--the delivery time was longer than I'd hoped for, but as it turned out, it came two days earlier than the earliest delivery time. Easy installation--however, it appeared that uppy/downy thing was letting it sit too low. Another Amazon find remedied that and now I am queen of the world! Thank you!!! ... show more
Reviewed in the United States on January 15, 2025 by Thrilled2Pieces
    • Worked for me
For my chair the only real issue is the rubber bushing kind of disintegrating creating a lot of noise and creaking. I felt like the bearing and washer in this kit were of lower quality than the ones in my chair so I just reused them with the new rubber bushing. Solved the issue, I give this a 4 star because it’s really the only kit on the market for this kind of thing and it did work for me. ... show more
Reviewed in the United States on January 19, 2021 by Park
    • Chair replacements
Ended up using the whole thing. Works very well.
Reviewed in the United States on August 30, 2026 by Tim Turner
    • Fixes the DxRacer "Clicking" Issue
I have a newer DxRacer Classic series (which was their top of the line model when I bought it last year.) It produced a horrible clicking noise whenever I leaned back or sat down or move around in any kind of way. All within the 1st month of owning it. I contacted the authorized seller and they sent me a brand new reclining and gas cylinders unit (like 200 bucks in parts) and this pretty much fixed the entire issue. I didn't think about it again until last month about 1 year later... the dread clicking came back. I probably could have sent away for another gas cylinders replacement, but I knew this time around the clicking is caused by broken ball bearing washer (since this is widespread knowledge around the net now). My chair is extra big model so the gas cylinders is heavy duty (not normal size) this hardware repair kit is universal size so it fits both normal and heavy duty gas cylinders. When I popped the pin off my chair and remove the base from the shaft, loose ball bearings spilled out onto the floor. The rubber stopper washer was completely shredded. The only thing that survived was the 2 washers that sat on the top and bottom of the plastic washer bearing. I knew immediately the net was correct. This was the issue for the clicks. A couple of tips I can give you on installation. Have a long wooden dowel or some other long blunt object to pick out the bearings and junk stuck at the bottom of the wheel base cuff. I had bearings stuck in the grease and particulate matter everywhere along the bottom. I cleaned all that out with the dowel (just wiped the dowel off in a paper towel at each step) until everything looked silvery and clean at the bottom. Another tip is make sure you have bearing grease before you do this installation. It does not come with the kit. You do not want to put these bearings in without bearing grease all over the washers and bearing washer or you will just break it sooner. Keep in mind bearing grease is different from bearing oil (grease is what you need for this task). The repair was done within 10 minutes (would have been less if I didn't have to pick out loose bearings from the wheel base collar.) No there are no clicks or pops. The chair rotates around as flawlessly as it did when it was new. I likely will have to do this again in 1 year, but at least now I know how to fix my chair for 10 bucks. I hope this helps. Also, there does not seem to be any issue with that washer bearing being 10mm smaller in this gas cylinder than the bigger heavy duty one that came with the DxRacer chair. ... show more
Reviewed in the United States on May 17, 2017 by Bruno
    • This Kit Saved a Herman Miller chair
So I bought a Herman Miller chair second hand from a random man, and although I inspected the chair in the parking lot where we met up, I did not pick it up. I thought the seller was being a gentleman by helping me, a petite woman, load a heavy office chair into my car. Turns out he was holding it together and it fell apart when I unloaded it. Of course I paid cash and of course the seller didn't want to refund my money even though he knowingly sold me a broken chair (may Karma bite his a@*). This kit saved the day. It had all the parts that were broken or missing. For a reasonable cost, I was able to salvage the $$ I spent. The installation was simple enough to follow using the instruction card. Thank you, thank you! ... show more
Reviewed in the United States on December 16, 2024 by book nerd
    • Specialized parts are great; washers are not
If you need the washers, this is not the kit for you. I purchased this kit only for the clip that goes on the very bottom of the assembly and it is great. I read the previous comments that the washers are thicker than the OEM parts for the Herman Miller Aeron and for individuals looking to replace those parts, I can confirm that if you install everything included in this kit, you will not be able to fit the clip on the end; however, if you only need a couple pieces such as the rubber ring, ball bearings and/or clip, just use the OEM washers that you already have and everything will fit nicely. If you need those parts and need to replace the washers as well, there may be a trip to the hardware store in your future, but this is still a good buy for you. If all you need is the washers and nothing else, this is not the kit for youl; besides, you can get the parts you need faster and cheaper at a local hardware store. ... show more
Reviewed in the United States on March 20, 2015 by JeffPescador

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