GoPro round stem mount.
This mount is made to be primary fastened with 4.8mm wide CABLE ZIP TIES.
Infill needs to be at least 50%
Use strong double sided tape between the mount and the stem to avoid any Gopro side to side slips due to road vibrations. This mount survived my 200km brevet with flying colors.

Creality

Ender 3

No

Yes

0.3 or less

50% or more

Brim is mandatory, at least 5-10 lines and always point the model upwards for easier printing. Supports are a must.