Product Description

K2/K2 Pro/K2 Plus Extrusion Gear Kit is an original set of extrusion gears for 3D printers Creality K2, K2 Pro and K2 Plus. It replaces the original gears in the extruder and restores reliable filament feeding even at high speeds and during long print jobs. High-quality metal gears with precision-machined teeth ensure strong grip on the filament, minimize slippage and reduce the risk of under- or over-extrusion. The set is suitable both for routine maintenance (replacement of worn parts) and as an upgrade for more demanding materials and high-speed printing.

Compatibility is based on the original Creality K2 Plus Extrusion Gear Kit (SKU 4004120025) designed for K2 Plus; structurally it is used throughout the K2, K2 Pro and K2 Plus series.

---

Key Features

• Original Creality part – compatible with K2 / K2 Pro / K2 Plus extruder.
• Precision-machined gears – stable and consistent filament feeding.
• High pressure (up to approx. 80 N) – reliable extrusion even for flexible and technical materials.
• High-quality metal design – significantly longer lifespan compared to plastic parts.
• Minimization of filament slippage – reduces under-extrusion, filament "chewing" and clogging.
• Compact and lightweight design – maintains high-speed axis movement dynamics.
• Easy replacement – direct replacement for original gears in the extruder, no printer modifications needed.

---

Technical Specifications

Parameter	Value
Manufacturer	Creality
Manufacturer Name	K2 Plus Extrusion Gear Kit
Production Code (SKU)	4004120025
Purpose	Replacement extruder gears
Compatible Models	Creality K2, K2 Pro, K2 Plus*
Gear Material	Metal (steel / alloy)
Gear Type	Precision-machined gears
Extrusion Force (max.)	up to approx. 80 N (depending on extruder settings)
Approximate Package Dimensions	approx. 16–20 × 16–20 × 9–15 mm
Set Weight	approx. 0,02–0,03 kg

* Primarily intended for K2 Plus; for K2 and K2 Pro, the extruders are based on the identical K2 platform – the gears are typologically identical or fully backward compatible. Before purchasing, we recommend verifying based on the extruder part number.

---

Package Contents

Contents may vary slightly by production batch, typically:

• 1× extruder drive gear
• 1× counter gear / idler gear
• potential mounting grub screws (depending on version)

---

Usage and Benefits

When to use this kit

• Wear or damage to original gears (slippage, "chewed" filament, visible teeth in material).
• Loss of extrusion force – the printer has trouble maintaining flow at higher speeds or layer thicknesses.
• Significant under-/over-extrusion even after correct extruder step settings.
• When switching to more demanding materials (PETG, ABS, filled materials), where original gear limits become apparent.

User Benefits

• Higher reliability for long prints – more stable filament feeding.
• Better model surface quality due to consistent flow.
• Fewer print failures caused by filament "chewing" or slippage.
• Lower maintenance requirements – metal gears have a long lifespan.

---

Installation and Compatibility

• Installation should be performed on a turned off and unplugged printer.
• It is recommended to clean the extruder body from filament residue and dust at the same time.
• After replacing the gears, perform:
  • check of filament tension in the extruder,
  • potential re-calibration of E-steps (extruder steps/mm),
  • short test print to verify feeding smoothness.

If you are unsure about compatibility with a specific extruder version, we recommend comparing the original gear markings or consulting our technical department.

Key Features:

• Original replacement extrusion gear set for Creality K2, K2 Pro and K2 Plus.
• Precision-machined metal gears for stable filament feeding without slippage.
• High pressure and extrusion force (up to around 80 N) suitable even for demanding and flexible materials.
• Long lifespan thanks to metal design and wear resistance.
• Easy and fast replacement – direct replacement of original gears in the extruder.
• Increases print reliability and limits under-/over-extrusion and the risk of nozzle clogging.