Installing new threadless headset: how to set the crown ring and its rubber ring? My old headset was loosy and feeling very instable. So I removed it, I got this: !my new fsa headsed and I'd want to install it. I am wondering what is the right way to install the two pieces on the right. I know the crown ring (second from right) has to be installed on the fork (I removed the old one). But I don't know what to do with the plastic ring. Should I put it _before_ the crown ring? Should I put it _afterwards_? What is its purpose? (actually I am having and hard time realizing how everything works since the ball bearings are sealed and they don't have to slide on the crown ring itself). I bought this PVC tube to install the ring, for reference: !enter image description here And I think to hammer it down with it. Thanks for your help!

I found it. I am very disappointed this was not reached through the headset official page. I found it in a forum thanks to Google.

!enter image description here

So the rubber ring goes just above the crown race.