Prusa Belt 2GT X-axis – original drive belt for the X-axis
Original 2GT belt for the X-axis produced by Prusa Research is designed for 3D printers Original Prusa MK4, MK3S+, MK3.9, MK3.5, MK3, MK2.5, MK2 and MK2S. This precision timing belt ensures smooth, accurate, and repeatable movement of the X-axis, which is crucial for surface quality and dimensional accuracy of printed parts.
With an original spare part, you can be sure that the dimensions, material, and tooth profile match the factory settings of the printer – without the need for tension adjustments or profile changes in the firmware.
Key features
- Original Prusa Research part – full compatibility with supported printer models
- 2GT Profile – fine 2 mm pitch for high feeding precision
- Optimized length 850 mm – specifically for the X-axis of the listed models without the need for shortening
- Width 6 mm – standard width used on Prusa printer axes
- Stable power transmission – minimizes slippage, lost steps, and print quality degradation
- Easy replacement – installation according to official service manuals at help.prusa3d.com
- Suitable for maintenance and repair – ideal when replacing a worn or damaged belt
Printer Compatibility
Compatible with models:
- Original Prusa MK4 / MK4S
- Original Prusa MK3.9 / MK3.9S
- Original Prusa MK3.5 / MK3.5S
- Original Prusa MK3 / MK3S / MK3S+
- Original Prusa MK2.5 / MK2.5S
- Original Prusa MK2 / MK2S
Not compatible with:
- Original Prusa MINI / MINI+
- Original Prusa XL
- SLA printers (SL1, SL1S)
- Multi-Material units (MMU1, MMU2, MMU2S, MMU3)
- Enclosure and other accessories where a different type or length of belt is used
For the MINI/MINI+ printer, a different X-axis belt model is used.
Technical parameters
| Parameter | Value |
|---|
| Belt type | 2GT (timing/toothed) |
| Tooth pitch | 2 mm |
| Length | 850 mm |
| Width | 6 mm |
| Pieces in package | 1 pc |
| Purpose | X-axis of FDM printers |
When is it appropriate to replace the belt?
We recommend replacing the 2GT X-axis belt in the following situations:
- The belt has visibly worn, frayed, or damaged teeth
- There is slippage, lost steps, or irregular X-axis movement
- You have noticed deteriorated dimensional accuracy in the X-axis
- The belt has uneven tension, ripples, or deformations
By replacing the belt in time, you prevent further problems with print quality and printer mechanics.
Installation and setup
For trouble-free assembly, follow the official repair and maintenance manual on the Prusa Research support pages:
- Select your specific printer model at help.prusa3d.com.
- Open the relevant manual for X-axis belt replacement.
- Follow the recommended belt tensioning procedure (neither too loose nor over-tensioned).
Correct belt tension is crucial for:
- Quiet and smooth operation of the X-axis
- Prevention of ghosting/vibrations on prints
- Long service life of bearings, motors, and pulleys
Why choose the original Prusa 2GT X-axis belt
- Guaranteed compatibility – dimensions and tooth profile match the printer's design exactly
- Proven quality – original parts are tested in Prusa printer series production
- No experimentation needed – no need to change motor step settings or slicer profiles
- Stable print quality – reliable power transmission without sudden changes in tension or stretch
If you want to restore the mechanical precision of your Original Prusa printer or preventively replace an old belt, the 2GT X-axis belt is the right choice.
Key features:
- Original 2GT belt for the X-axis of Original Prusa 3D printers
- Full compatibility with MK4/MK3S+/MK3.9/MK3.5/MK3/MK2.5/MK2/MK2S models
- 2GT profile with 2 mm tooth pitch for precise and smooth movement
- Optimized length 850 mm and width 6 mm for the X-axis
- Stable power transmission without slippage and lost steps
- Easy assembly according to official Prusa service manuals
- Ideal spare part for printer maintenance or repair
