This is Extruder Drive Gear (Motor Pinion) replacement for the Original Prusa MINI/+ extruder motor. This drive gear sits directly on the extruder motor shaft.

BMG Extruder Gear shaft assembly

High Quality Titan Extruder Gear with a POM Machined Stepper gear and precision-milled stainless hobb.

Idler Spring - for use across Most Prusa models except MK2/s and SL1/CW1

This is Extruder Driven Gear (Filament Spur) replacement part for the Original Prusa MINI/+. This is the driven/idler gear pushing the filament inside the extruder assembly.

Stepper motor gear for Titan Extruder