Prusa Research
MK4 to MK4S Upgrade Kit
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xLCD Info
Before you order the upgrade, please check which xLCD your printer came with. This is important for correct compatibility with the upgrade. Please note that the "old xLCD" version does not include an injection molded xLCD cover or backing, but a 3D printed version of the xLCD front cover.
Every Original Prusa 3D printer receives long-term support for years after launch. Not just small bugfixes, but major firmware and hardware upgrades that bring useful new features. And MK4 is no exception.
Compared to the Original Prusa MK4, the MK4S brings the following innovations: New high-performance 360° cooling system
- New high-performance 360° cooling system
- High-quality high-flow nozzle as standard
- Native iOS/Android Prusa app for iOS and Android with easy Wi-Fi setup with an NFC tap
- Improved print speed
- Improved print quality
- New parts printed from Prusament PC Blend Carbon Fiber or injection molded
What you will get with the MK4S upgrade?
Quiet High-Speed Printing
Twice as fast as the MK3S+ and among the fastest desktop printers, the MK4S uses a native implementation of Input Shaper and Pressure Advance technologies to eliminate resonances and optimize filament flow which is further enhanced by the new high-flow nozzle. The result is doubled print speed and beautifully quiet operation, so you can keep the MK4S on your desk and continue working undisturbed. The MK4S can print a SpeedBoatRace Benchy in 14 minutes and a “Bonkers” Benchy in 8 minutes.
High-Performance 360° Cooling
The MK4S features a brand new 360° cooling system consisting of a high-performance turbine and a redesigned fan shroud - the result of intensive airflow simulations to ensure that the cold air is directed precisely onto the print. This solution is much more effective compared to blanket fans, because the airflow is not blocked by the print itself. The weight of the Nextruder remains virtually unchanged, but the performance is far better.
Even with the large turbine, the printer is still beautifully quiet and can deliver prints with extreme 75° overhangs. Why does this matter? Because where other printers would already need a hefty amount of supports, the MK4S can easily deliver a beautiful-looking print. Less supports means shorter print times and less material wasted.
High-Flow Nozzle as Standard
The MK4S comes standard with a custom-made high-flow nozzle based on CHT technology. A high-flow nozzle enables faster printing, but also produces more durable prints. Plus, you can get more from the filaments you already know and love - you don’t have to look for any specialized high-flow filaments. Compared to the stock nozzle in the MK4, the new high-flow nozzle delivers between 50 to 114% improved flow rate depending on the material and nozzle diameter. We’re also offering an optional Nextruder nozzle adapter so you can install any kind of V6-compatible nozzle.
Package Contains
- Prusa Nozzle brass CHT - 0.4mm
- High-performance 360° cooling fan and fan shroud
- Nextruder parts (including PCCF printed parts)
- Wi-Fi board and NFC antenna
- Cover for xLCD and Nextruder cover
- Silicone cover for heatblock
- Fasteners and other accessories
