You can find Original Prusa i3 printable files and upgrades on this page.
0.2 mm layer height, infill 20% GRID and material PETG.
We recommend using black filament to print all MK3S and MK2.5S extruder parts. If you want different color, you can use it, but the FS-lever part should be definitely dark (black) and the other parts surrounding the IR-Sensor as well. In case you use any lighter colour for the FS-lever it might not trigger the sensor.
License GNU GPL v3.
You can read more about MK3S/MK2.5S/MMU2S upgrades in this article on our forum.