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!
Before you order the Original Prusa MK3 to MK4S Upgrade Kit, please check which PSU your printer came with and which version of the heatbed connector is installed. This is important for correct compatibility with the upgrade. Depending on the selected options, we can send you additional components to ensure compatibility with the upgrade.

Goods are made to order and not kept in stock. please allow 1 week for processing
To replace the part/s, please consult Prusa's Assembly Manuals. Make sure to follow the manual for your printer model.
These Genuine E3D premium DiamondBack Prusa nozzles bring you the most extreme Nextruder Nozzle solution to date.
Compatible with:
MK3.9MK4/SCOREOne/+CORE One LXL
Prusament PLA Anthracite Grey 1.75mm 1kg (NFC) is an in-house-made filament at Prusa Research. The whole manufacturing process is closely monitored and tested - guarantee ±0.02mm precision and highly consistent colors. You can inspect the parameters of every spool made at prusament.com.
This product is the replacement belt for Core One series printers,
Compatible with:
COREOne/+
Genuine E3D Prusa Nozzles like the E3D Prusa Nextruder Nozzle High Flow Brass 0.60mm feature an all-metal filament guide, ensuring that the entire path of the filament through the Nextruder is all-metal, no PTFE tubes anywhere.
This improves the overall reliability of the printer and makes changing nozzles much faster.
Compatible with:
MK3.9MK4/SXLCORE One/+ CORE One L
Pricing includes all Taxes and Customs/Duty fees
Official Prusa Reseller - 1Y MFG Warranty & Support!
All deliveries subject to current lead-time: 15 Days
The only 3D printer an engineer needs. Featuring an actively heated chamber, innovative cooling, and swappable print heads, the HT90 easily handles anything from ultra-fast PLA prototypes to demanding PEI (Ultem) 3D prints, the most used aerospace-certified filament.
Are you considering Original Prusa 3D printers for your workplace, government department, university, or maker space? Request a quote to [email protected] and one of our friendly team will be in touch.
Prusament PLA is an in-house-made filament at Prusa Research. The whole manufacturing process is closely monitored and tested - guarantee ±0.02mm precision and highly consistent colors. You can inspect the parameters of every spool made at prusament.com.
Prusament PLA Prusa Orange 1.75mm 1kg is an in-house-made filament at Prusa Research. The whole manufacturing process is closely monitored and tested - guarantee ±0.02mm precision and highly consistent colours. You can inspect the parameters of every spool made at prusament.com.
Prusament PLA Opal Green 1.75mm 1kg is an in-house-made filament at Prusa Research. The whole manufacturing process is closely monitored and tested - guarantee ±0.02mm precision and highly consistent colors. You can inspect the parameters of every spool made at prusament.com.
Prusament PETG Jet Black 1.75mm 1kg is an in-house-made filament at Prusa Research.
The whole manufacturing process is closely monitored and tested.
Guarantee ±0.02mm precision and highly consistent colors.
You can inspect the parameters of every spool made at prusament.com.
Prusament ASA Pro Green 800gm (NFC) is an in-house-made filament at Prusa Research. The whole manufacturing process is closely monitored and tested - guarantee ±0.03mm precision and highly consistent colors. You can inspect the parameters of every spool made at prusament.com.
Temperature and humidity sensor perfect for any application in 3D Printing.
Temperature sensor displays data in C° only.
Prusament PLA Prusa Gentlemens Grey 1.75mm 1kg is an in-house-made filament at Prusa Research. The whole manufacturing process is closely monitored and tested - guarantee ±0.02mm precision and highly consistent colors. You can inspect the parameters of every spool made at prusament.com.
The Buddy3D Camera for Prusa CORE One allows you to remotely monitor your prints via Prusa Connect and the Prusa mobile app. It is compatible with the Prusa CORE One 3D printer and requires a Wi-Fi connection to work, compatible with:
CORE One/+ CORE One L
The Prusa Set PG Assembley + PG Ring is a replacement for a planetary gear with PG ring, compatible with:
MK3.9/SMK4/SXLCORE One/+ CORE One L
Prusament ASA Prusa Orange 800gm (NFC) is an in-house-made filament at Prusa Research. The whole manufacturing process is closely monitored and tested - guarantee ±0.03mm precision and highly consistent colors. You can inspect the parameters of every spool made at prusament.com.
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!