Simple model, no supports. I think it should hold up fine with any filament.
I printed it at .3 layer height 20% gyroid infill in PETG
I printed the version with the bigger holes. The side with the holes closer to the edge will face the front of the scooter. (It is obvious when installing it.)
I created another version that has an arrow to make it easier. It also has hex shaped holes because I was thinking that might help with adhesion.
Attach with 20mm M4s.
The author hasn't provided the model origin yet.