Dual Nano Coated Hardened Steel Extruder Gear Upgrade Kit For Neptune 4 By 4 Pro Direct Drive Hotend One Piece CNC Shaft Precision Helical Gear System For Ultra Smooth Prints And Fewer Assembly Errors

Dual Nano-Coated Hardened Gear Upgrade for Neptune 4
✔️ Pack of 1 kit with one-piece shaft, dual ball bearings, nano-coated gear

This upgrade kit is a high-precision gear assembly designed for Neptune 4 and Neptune 4 Pro direct-drive hotends. It replaces the original extruder gear to deliver smoother filament feeding and fewer calibration errors in desktop 3D printers.

✅ Material: POM core with nano-coated hardened steel gear for durability
✅ One-piece shaft eliminates assembly errors and improves concentricity
✅ Hardened steel helical gear with nano-coating for precise meshing and wear resistance
✅ Dual ball bearings reduce clearance and boost extrusion precision (TPU/PETG friendly)
✅ Exact fit for Neptune 4 and Neptune 4 Pro direct-drive hotends; not compatible with Neptune 4 Plus or 4 Max

💡 What is an extruder gear upgrade kit used for in FDM printers and how does it improve direct-drive feeding?

A handy upgrade that boosts extrusion control and print consistency across jobs.

- enhances extrusion control and print consistency for FDM printers - designed for Neptune 4 and 4 Pro direct-drive setups to reduce slipping - improves feeding of flexible filaments like TPU and PETG - reduces wear and maintenance by improving gear life ✝️