This extruder upgrade kit will solve your feeding and grinding problems and will also give you higher resolution that will improve surface quality. It will also allow to print faster with sustained quality and no risk for grinding the filament. It features our new lightweight BMG extruder with internal 3:1 gearing ratio combined with our Dual Drive precision cnc-machined hardened steel gears for maximum performance an for a long lifetime. This kit includes the following parts: 1x BMG Extruder 1x CNC machined Aluminum mounting bracket 1x Board holder (fdm-printed in ABS) 1x Adapter piece with internal PTFE guide tube 2x M3x5 screws (to mount the board holder) E-steps needs to be updated to 415. This kit contains no motor, and is for use with original motor. The movement in Y-direction will be lowered to 190 mm.