Fast and Precise Results without Compromise

The Original Prusa MK4S delivers reliable results for all your projects. Building on the MK4 model loved by hobbyists and big companies alike, it offers even higher accuracy and print speed. Thanks to its new 360° cooling, high-flow nozzle, and numerous firmware optimizations, you’ll get your 3D models fast and with top-notch quality.

Perfect for Pros and Beginners

The MK4S answers your needs whether you’re just starting or have years of experience. We’ve designed the UI to be easy to use even for complete beginners, yet its reliable performance also makes it a perfect fit for professional workshops. Getting started is super easy: simply take the MK4S out of the box, plug it in, perform a quick calibration, and start printing in 15 minutes!

Unmatched Print Quality

While the MK4S is our fastest printer yet, it never sacrifices quality for quicker print times. Thanks to its fine-tuned features and workflow, it always delivers precise models at amazing speeds as confirmed by the perfect 30/30 score in Print Quality in TechRadar’s review.

Perfect Dimensional Accuracy

Your creations should turn out precisely as designed, especially when they require a perfect fit. The MK4S ensures that by delivering exceptionally accurate prints. See the accuracy comparison measured using a CT scan:

The more the color deviates from green, the less accurate the object is.
The MK4S is the clear winner.

360° Cooling – Print without Supports

Reduce the need for supports and print quicker with less material! Thanks to the 360° cooling, the MK4S allows you to print overhangs of up to 75° without supports, significantly cutting down on print costs and time. This also simplifies printing flexible materials like TPU, where removing supports is often a challenge.

The results of printing 75° overhangs with no supports.

Solid & Durable Prints

With the MK4S, you get prints that last. Its new cooling fan and high-flow nozzle provide excellent layer adhesion, making your entire prints strong and durable. It comes with a wide array of print profiles that let you prioritize higher speed or maximal sturdiness.

Perfect Surface Finish

Your models turn out smooth and a joy to look at, as the MK4S’ print profiles prioritize perfect surface finishes. You can adjust print layer height to match your desired level of detail and print everything from super intricate models (with the 0.25mm nozzle) to larger objects, where details matter less.

The MK4S prints require low-to-no finishing.

World-Class Print Speed

As Tom’s Hardware puts it: The Prusa MK4S is pretty darn fast. It substantially cuts print times thanks to the new cooling fan with a powerful turbine and 360° air delivery, as well as the high-flow nozzle that allows for maximized filament flow. Combined with optimized firmware and print profiles, the results are both quick and flawless.

Real-life comparison of different print speeds.

Proven Reliability

We ship around 10,000 3D printers each month directly from our HQ in Prague, Czech Republic, and we also started manufacturing them in the USA. There are over half a million Original Prusa printers in the wild and still only around 20 printers per month need to be sent back to us for hands-on maintenance – the claim rate is less than 1%! Don’t believe it? Check out our Trustpilot score or Google Reviews!

Do you want to learn more about the MK4S?
READ THE MK4S ARTICLE

Seamless Workflow

You can control your printer(s) remotely. The MK4S includes an ethernet port and Wi-Fi with NFC setup, allowing you to manage it from anywhere using the secure Prusa Connect system or mobile app. For maximum security, the printer can also operate fully offline.

Advanced Materials

Choose the best filament for your model, the MK4S can handle most of them: PLA, PETG, ASA, carbon-filled filaments, and even the flexible TPU! With its direct drive Nextruder, it tackles TPU easily, allowing you to create amazing flexible projects. To get the most out of your materials, house the MK4S in an Enclosure.

100% Privacy

We do not collect information about your prints or your printer’s surroundings without consent. We believe that no matter whether you’re developing a new-generation space shuttle, or just printing silly things for your friends, no organization should be interested in this information. This is why our printers can be found in top companies, universities and research institutions around the world.
Our printers are primarily designed for completely offline operation with no drawbacks or limitations. You have the option to share data with our tech support and connect your printer to the Prusa Connect remote print management system, but only if you choose to do so. Our code is open source, so you can always check that we aren’t cheating or stealing your files, even when you’re connected to the internet.

Accessories for enthusiasts

The MK4S is compatible with two new optional addons for enthusiasts and modders. First, the GPIO “hackerboard” allows you to control external electronics using G-commands. And we have also introduced an accelerometer addon for those who made extensive changes to the Nextruder. You can find more details on their respective product pages.

Original Prusa MK4 vs MK4S

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
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
Optional accessory: GPIO hackerboard
Optional accessory: accelerometer for printer modders

* With the MK4S/MMU3 bundle, you will receive both nozzles in the package - the standard and the high-flow nozzle. Assembled MK4S in a bundle with MMU3, the standard nozzle will be pre-installed on the printer by default. See more details in the description in the Addons section.

Open design - simple maintenance

Our machines are built to last. We operate a massive print farm with over 700 of our printers running 24/7. This means we design our machines to withstand non-stop operation with minimal downtime. The open “bed-slinger“ design is the result of a 10-year evolution and enables the easiest access to all parts without a lengthy disassembly process. No welded or glued parts, everything can be taken apart with a set of Allen keys.

Designed for Offline Use

The MK4S has been designed for native offline use, so if you don’t want to use the network services, you don’t have to. The printer can be configured completely without internet access and there are no drawbacks or limitations. The Wi-Fi module can be easily unplugged for environments that require the highest level of security.

The Nextruder & 32-bit Platform

The MK4S is built on the internally developed 32-bit embedded platform and features our next-generation extruder, the Nextruder.

The MK4S is the 2025 iteration of our flagship 3D printing workhorse. Easy to set up and run, with top-class reliability and safety features, the MK4S delivers the highest quality 3D prints faster than ever. Designed and built in the EU.

Power Cable (US), Handbook (EN) (change)

Add-ons

MMU3

MK4S can be enhanced by an optional add-on that allows your single-extruder printer to print with up to 5 colors (materials) at the same time. Load the five colors of your choice, slice the object in PrusaSlicer, start the print, and let the MMU3 do the rest.

With all-new plastic parts, reinforced metal parts and firmware built from the ground up, the MMU3 delivers stunning multi-material prints faster and more efficiently than its competitors. With 25-35 seconds per filament change and optimized nozzle cleaning, the prints are beautifully fast and reliable, and you don’t have to worry about cleaning piles of wasted filament scraps from around your printer all the time.

The MMU3 is up to three times more efficient in managing filament waste compared to other single-nozzle multi-material systems, bringing substantial cost savings.

The high-flow nozzle in the MK4S allows for much faster printing. However, when using the MMU3, the standard nozzle makes much more sense. Why? While the MMU3 works fine with a high-flow nozzle, the increased volumetric flow results in higher filament waste during printing. In other words, the MMU3 delivers the best performance, the same speed and the highest efficiency (lowest waste) when combined with the standard nozzle in both MK4 and MK4S.

So, if you order a standalone MMU3 for the MK4S you will receive it along with the standard nozzle. In the MK4S/MMU3 bundle, you will receive both nozzles in the package - the standard one as well as the high-flow nozzle. For assembled MK4S in a bundle with MMU3, the standard nozzle will be pre-installed on the printer as the default.

Enclosure

If you want to print more advanced technical materials on your MK4S, you’ll find the Enclosure really handy. It stabilizes the printer environment, eliminates drafts and odors, and makes the printer even more silent.

An enclosure is not necessary for every type of filament. Most of common materials, such as PLA, PETG, and even some advanced ones (like PCCF) do not require an enclosure. However, once you need to print with more advanced materials, such as ASA, ABS, PC and similar, the Enclosure is the best option to achieve increased temperatures in a stabilized environment, plus, the optional high-performance filtration system will take care of ultra-fine particles.

The Original Prusa Enclosure is available with a range of useful add-ons, such as the Advanced filtration system with HEPA filter, LED strip, Mechanical Lock or Fire Suppression System. You can add these addons manually to the shopping cart. Find out more in the Enclosure Addons section on our e-shop.

Applications

Households

What you can print with the MK4S? Almost anything! Check out the inspiration and free 3D models for kitchen, living room, home decor and garden on Printables.com.

You can also browse amazing models from designers from all over the world submitted in thematic contests.

Hobbies

Whether you're maker, cosplayer, pop-culture fan, gamer, modeller or board-game player, MK4S can open up new possibilities for you.

On Printables.com, you can share your designs and makes with others or download 3D models for free. Join us!

Manufacturing

Original Prusa 3D printers are used in industries worldwide as efficient, easy-to-use, and reliable 3D printing workhorses.

Our cost-effective solution with simple maintenance is a perfect choice for everyone - from start-ups to the large international companies!

Education

Join the tens of thousands of schools, universities, and other educational institutions worldwide that have adopted 3D printing! Explore the vast possibilities of this essential, state-of-the-art technology.

Read more case studies and examples of usage of the Original Prusa printers in education.

Architecture & Design

A quick and affordable way to create refined models with intricate detail. Free up the time of your skilled designers and let the 3D printers do the hard work.

Check out the videos and articles about leading designers and artists using our 3D printers in their work.

Automotive

Modern-day automotive industry faces many challenges - from disrupted supply chains to rapid technology development and constant changes. 3D printing brings the necessary efficiency and flexibility.

Here are examples of where our 3D printers helped with the production and prototyping in the automotive industry.

Technical Parameters

Measurements
Build Volume	250 x 210 x 220 mm \| 9.84 x 8.3 x 8.6 in
Filament diameter	1.75 mm
Layer height	0.05-0.30 mm
Printer dimensions (without spool)	7 kg, 500×550×400 mm; 19.6×21.6×15.7 in (X×Y×Z)
Electronics
Mainboard	Custom 32-bit xBuddy electronics with STM32
Stepper Drivers	Trinamic 2130
Stepper motors	Precise 0.9° X,Y stepper motors (prevents VFA)
Extruder
Extruder	Nextruder, Direct Drive, E3D V6 compatible (with adapter)
Extruder electronics	Custom breakout board for connecting fans, thermistors and other parts.
Filament path	Aluminum heatsink, all-metal hotend
Drive system	Nextruder Planetary Gear System, 10:1 gearbox ratio
Cooling fan	High-performance turbine, 360° cooling system
Nozzle	High-flow Prusa Nozzle brass CHT - 0.4 mm
Max. operating temperature
Max nozzle temperature	290 °C / 554 °F
Max heatbed temperature	120 °C / 248 °F
Controls
LCD screen	3.5″ graphic 65k color screen
Connectivity	NFC receiver, optional ESP Wi-Fi module (delivered with the printer)
Print medium	USB drive / LAN / internet via Prusa Connect
Sensors
Advanced sensors	Filament sensor, Loadcell sensor, Power panic, 4 high-precision thermistors (genuine Semitec) + fan motors RPM monitoring
Print surface
Print surface	Magnetic heatbed with removable PEI spring steel sheets
Calibration
Bed calibration	Automatic, Mesh Bed Leveling (only on print area)
Materials
Supported materials	PLA, PETG, Flex, PVA, PC, PP, CPE, PVB and when using the Original Prusa Enclosure with filtration add-on ABS, ASA, HIPS, PA
Power
PSU	240W, custom made by Delta with Power Panic HW
Power consumption	PLA settings: 80W / ABS settings: 120W

Basic package includes:

Original Prusa MK4S
Prusament PLA Prusa Galaxy Black 1kg
Smooth PEI Print Sheet
Alcohol-saturated wipes, acupuncture needle
Toolset: Uni-wrench, 13-16 wrench, Nose pliers, Allen and torx keys
USB drive with sample prints (G-codes)
Spoolholder
Prusa lubricant for bearings
3D Printing Handbook

Warranty note

Consumable parts, such as print sheets (smooth, textured, etc.), are not covered by the warranty since their coatings are expected to deteriorate over time, unless the failure is due to a defect in materials or workmanship. Cosmetic damage, which includes, but is not limited to, scratches, dents, cracks, or other aesthetic damage, is also not covered. Only sheets defective upon delivery are covered by the warranty.

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