I designed this holder replacement for my vyper because with a lot of retraction the runout sensor bends in an unhealthy way. Even more when there's not much filament on the spool so the angle to the sensor intake gets very steep.
That's why the bearing (608) is there.

The original mount in the runout Sensor has to be cut off!

Parts needed:

2x M3x25 Screws, Nuts, and Washers
1x Bearing 608

Updated Version has more clearance where the bearing sits and a Bolt to replace the screw needed in the previous version.

UPDATE: Added Sensor Holder with hole for push fitting for bowden tube instead of a bearig to run filament out of a dryer.