First, remove the shock from your bike. Let the air our and it should be easy to just remove the two drive-side bolts and take the whole thing out.
The kit has 7 parts in it, a metal “axle”, two white plastic pieces, two black plastic pieces and two rubber o-rings.
When you take the shock off, you will see two sets of aluminum “tophats” on the shock. The top set rarely moves and there is little wear there typically. If you are getting a squeaking, it is probably from the bottom set. The top two were difficult to take out, clearly the bushing was not worn much and they looked like they were in great shape.
As you can see the bottom set is more susceptible to movements in the shock stroke, so it will wear out quicker, making it squeak. In addition it is more exposed for sweat and other elements, so as you can see on mine, it was more corroded. These actually came out by hand, the top ones required a lot of work with a wrench to get them out.
Note that these were cleaned with a degreaser before I took the picture, so they were a mess.
Once you have the top hats off, you can see the DU bushings pressed into the shock. There is a red color inside the bushing, I am guessing that this is something to prevent the terrible squeaking that I was hearing. For the top, there is not as much action, so it is really pretty clean. For the bottom, the red is completely gone.
To get these out I had to take the shock to a shop. $5 to have them removed. Don’t buy the tool, as once you switch to the new models, you will never need to pull bushings agiain. But ask the shop if they have the right tool. The first shiop I went to did not, and that is a pretty important piece for getting the busihing out without damaging the shock. With the bushings out, you should have nice, clean eyelets.
First put the white cap on the shock, one on each side of the eyelet. When you have both on, push down on them on the workbench to make sure that they are all the way in.
Once you have both white pieces in, put the metal tube through the middle, work it to the center, it will be tight, so it will take a few tries pushing on the workbench to get it centered.
When you look at the white part, you should see a gap, this is where the o-ring goes.
Slip the 0-ring over the end and work it down into the gap with your thumbnail.