Original Prusa MK3.9 to MK3.9S upgrade kit

Transform your reliable Original Prusa MK3.9 into the high-performance MK3.9S with this official upgrade kit from Prusa Research. This enhancement focuses on elevating print quality and reliability through refined hardware components. The build volume of 250 x 210 x 220 mm remains unchanged, offering ample space for large projects. By optimizing the motion mechanics and extruder control, the MK3.9S achieves even finer layer resolution, making it perfect for demanding prototypes and detailed functional parts. Operation remains intuitive via the color touchscreen, while connectivity options such as Wi-Fi, Ethernet, and USB-C are preserved. Designed specifically for MK3.9 owners, this upgrade elevates the machine's capabilities without the need to purchase a completely new unit. It targets makers, engineers, and professional users who demand the utmost quality from their existing setup. Thanks to Prusa's proven ecosystem integration and detailed instructions, the installation process is straightforward for experienced users.