Center rod on Aeron chair had gone through and scratched up our floor. Thought I had to go buy another $20-$60 replacement gas cylinder, but luckily I came across this first.

Note that the silver washer included was fine for my Aeron chair. I WAS able to get the final end clip on nice and snug.

Removing the wheel-base from the chair/cylinder was probably the most complicated task in this job. While sitting on the floor and having the chair on its side, I placed my feet on the top of 2 of 5 star wheelbase, and placed my arms under the armrests and was able to separate and access the center rod. FYI I took off the backrest and seat bottom to do this.

Once the inside of the cylinder was accessible, removed the remaining old parts such as the rubber stopper, washer, and another broken part. Placed the new parts from this kit on as per their instructions, in order. Put the wheelbase back on with the bottom part of the cylinder and made sure to lineup my chairs de-pressable? button with the inner groove (had to use a flashlight to peak into the wheelbase/cylinder to see the groove and notch). Once that was on properly, put the final silver washer on and slide on the clip as far as I could with my fingers. I had to gently use a wrench to push/force it on the rest of the way ever so carefully until it snapped into place. Turned the chair back over to test that the center rod did not go all the way through to the floor and that the pneumatic lift still worked properly.

Another success story of this $10 kit saving a Herman Miller Aeron chair!

Used to fix blown rubber ring and bad bearings in dx racer drift series chair.

The bearings and rubber ring in my chair somehow burst a while back, so I was losing pressure in the chair every 5 minutes. I was worried I was going to have to replace the whole tube. I ordered this, installed it easily, and now the entire problem is fixed. No pressure loss. Great product with very simply instructions.

Quick install. Night and day difference to my dxracer long series chair. Got rid of the broken internals that caused all the loud popping and clicking when moving around in the chair. The swivel is much improved. Easily the best and easiest fix!

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.