The Original Prusa MK3 to MK4S Upgrade Kit is the full upgrade that also contains the MK4’s new X/Y precise motors (400 steps, 0.9°per step). It’s the most expensive of all three, but last time you voiced your interest in a full MK2->MK3 upgrade pretty strongly, so we decided to give you a full MK4 upgrade as well. :-)

This product is supplied as a kit - you must assemble it yourself!

The Original Prusa MK4 to MK4S Upgrade Kit contains everything you need to fully upgrade your stock MK4 3D printer to the new MK4S.

The upgrade is supplied as a kit - you need to assemble it yourself. 

The Original Prusa MMU3 is the latest solution for printing with up to five filaments at the same time with high speed and low waste. As an add-on for the Original Prusa i3 MK3S+/MK3.5 and MK4, it enables automatic switching between loaded materials. MMU3 is fully supported in PrusaSlicer by an easy multi-material painting tool, and it offers efficient and filament-saving color printing to everybody.

Current Lead Time: 1-2 weeks