Bondtech LGX for Prusa MK3S & Mosquito


Fit the new Bondtech LGX to your Prusa MK3S or MK3S+ with this comprehensive kit of purpose-built products! Designed for use with the Slice Engineering Mosquito or Mosquito Magnum Hotend.

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Bondtech LGX for MK3S & Mosquito

NOTE: A compatible X Carriage mount is required for installation! See our complete kit for this upgrade here. You can also find the X carriage from Bondtech separately here.

Need a Mosquito or Mosquito Magnum? See our options here.

Direct Drive Upgrade

This LGX™ based upgrade kit is an easy to install replacement of the stock direct drive extruder. It requires the accessories included in the LGX™ Accessories for MK3S & Mosquito package.

Easy To Install

Very intuitive and easy to install upgrade kit where the extruder faces the X-carriage reducing the distance between the nozzle and the x-axis.

Leading Grip Power

The LGX™ is the Bondtech extruder with the highest filament grip due to its new large drive wheels that put more teeth engaging the filament.

MMU Compatibility

This upgrade kit is not compatible with any MMU version.

Custom Firmware Required

You need to update your Prusa’s firmware to use this product.

New Firmware Available.

See Bondtech's Firmware Page to download and follow the instructions to install!

Enjoy Bondtech’s Evolved Dual Drive Technology

Start using our newest extruder with our new Dual Drive Technology based on larger drive gears. This is only one of the 7 new features Bondtech implemented on an extruder.

7 new features on a Bondtech eXtruder:

  • Larger drive wheels, for increased filament grip;
  • Filament pre-tension lever, for repeated results;
  • Multi-function interface socket, for tool or application quick swap;
  • Drive wheels’ maintenance windows, for easy cleaning;
  • Compact, light & symmetric design, for increased performance and compatibility;
  • Multiple mounting hole patterns, for easy and flexible setup;
  • A small step for a greener Future, craft boxes without bleaching & no coating.

3D Printed Housing using PA12

The housing parts are professionally printed with nylon for maximum strength and precision and higher temperature resistance.

Working Temperature Limits

Bear in mind the working temperature limit of this upgrade kit will have the following set of limits:

  • Due to the stepper motor > up to 80°C.
  • The PA12 parts themselves can withstand up to 100°C.

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