Bondtech Upgrade Kit BMG Extruder Prusa i3 MK3S MK3S And MK2.5S

Bondtech Upgrade Kit BMG Extruder Prusa i3 MK3S+/MK3S & MK2.5S

Bondtech Upgrade Kit Prusa I3 MK2.5S / MK3S / MK3S+ Extruder upgrade.

• Bondtech Upgrade Kit – BMG Extruder – Prusa i3 MK3S+/MK3S & MK2.5S is a lightweight, high-resolution extruder upgrade designed with community-optimized geometry.
• Built around the Bondtech BMG extruder with 3:1 gearing ratio for higher push force and improved extrusion precision.
• Compatible only with the original All Metal V6 hotend supplied with Prusa printers.
• Reduced moving mass helps cut vibration and ghosting, supporting better surface finish and faster printing potential.

Specifications

• Compatible printers: Prusa i3 MK2.5S / MK3S / MK3S+
• Hotend compatibility: Original All Metal V6 hotend only
• Extruder included: Bondtech BMG (Bondtech Mini Geared)
• Gear ratio: 3:1 gearing ratio
• Cooling: optimized heatsink cooling geometry
• Sensor support: adapted for Prusa filament sensor
• Probe mount: PINDA probe mount included
• Housing: professional SLS 3D printed housing
• Weight saving: approx. 15% lower moving weight

Features

• Higher push force: reduces filament slipping, shredding, and deformation
• Better resolution: improved control for consistent flow and clean details
• Optimized cooling path: helps reduce heat creep on all-metal hotends
• Less ghosting & vibration: lighter moving assembly improves print quality
• Adapted fit for Prusa’s newer filament sensor
• Designed to convert existing extruder to a BMG-based upgrade with required parts only

Applications

• Improving extrusion consistency on Prusa MK3S/MK3S+/MK2.5S
• Reducing common PLA clogging caused by heat creep in all-metal hotends
• Printing faster while maintaining stable extrusion and surface quality
• Long prints needing reliable feeding and fewer under/over-extrusion issues

Package Include

• 1 pieces of Bondtech Upgrade Kit BMG Extruder.