1 1/8" crown race setting tool

This tool is used to press in the crown race on the steerer tube of a bicycle fork and to keep it centered (only works on 1 1/8" steerer tubes). If the crown you are trying to put on is not a split one, you will need a metal tube (/PVC / ...) and a hammer to hammer it in.

Edit 11/09/2024 : I have added a new file with extra clearance around the steerer tube. The original file has 0.5mm of clearance and I have used with great success, but another user reported having issues with it not fitting around the steerer tube so I made a new file called "crown installer looser fit" which has 1.5mm of clearance.