Have MMU, worth upgrading to MK4S? - General discussion, announcements and releases https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4-general-discussion-announcements-and-releases/have-mmu-worth-upgrading-to-mk4s/ Prusa3D Forum Discussion Board en-US Tue, 09 Jun 2026 15:04:54 +0000 wpForo 60 RE: Have MMU, worth upgrading to MK4S? https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4-general-discussion-announcements-and-releases/have-mmu-worth-upgrading-to-mk4s/#post-732122 Thu, 09 Jan 2025 11:19:27 +0000 Hey there! That's a great question about upgrading your MK4 with an MMU3 to a MK4S. From what I understand, you can upgrade to a MK4S, but the high-flow nozzle isn't compatible with the MMU3. So you wouldn't get the full benefit of the MK4S upgrade in terms of speed with that particular nozzle. Whether it's worth it depends on what else you'd get out of the MK4S.

]]> General discussion, announcements and releases Mike William https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4-general-discussion-announcements-and-releases/have-mmu-worth-upgrading-to-mk4s/#post-732122 Have MMU, worth upgrading to MK4S? https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4-general-discussion-announcements-and-releases/have-mmu-worth-upgrading-to-mk4s/#post-731209 Tue, 31 Dec 2024 07:07:59 +0000 I recently upgraded my MK4 with an MMU3. Can I still upgrade it to MK4S as well and is it worth doing so or would I not benefit because can't use the high flow nozzle with MMU? Also, would I need a new version of the MMU? 

]]> General discussion, announcements and releases Avram Piltch https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4-general-discussion-announcements-and-releases/have-mmu-worth-upgrading-to-mk4s/#post-731209