SainSmart Dual Gear Direct Drive BMG Extruder

This extruder is designed for broad compatibility with the Creality Ender series. However, because mounting configurations can vary slightly between specific sub-models, we recommend verifying your current extruder mount layout against the standard BMG mounting pattern before purchasing.

The dual gear mechanism grips the filament from both sides simultaneously, providing significantly more pushing force than a single-gear setup. This reduces filament slipping and grinding, which directly translates to fewer clogs and more consistent extrusion, especially during complex prints.

Yes, this is an excellent upgrade for flexible filaments. The direct drive path and dual-gear grip minimize the distance the filament travels, which prevents the buckling and jamming often seen with standard Bowden setups when printing materials like TPU or Nylon.

The kit includes the essential hardware, specifically three M3*35 screws, and the necessary Allen keys (5mm and 2.5mm) for assembly. You will need to reuse your existing stepper motor and potentially adjust your printer's E-steps in the firmware after installation.

It is quite straightforward. The integrated lever allows you to quickly release the tension on the gears, letting you pull out old filament and insert new material manually without having to fight against the motor's resistance.