The quick-release lever lets you load and unload filament with ease for quick filament changes.
Spring loaded pre-tension on the filament.
This kit uses the original steppermotor that came with the printer and is installed in around 1h.
Full installation guide available here
For simple installation there is a custom mounting bracket available.
The original metal plate that holds the extruder needs to be modified in order to give room for the extruder, this is easily done with a hacksaw and a file.
Maximum X-movement is restricted about 15 mm on the right side.
E-step needs to be adjusted to 140 step/mm (with the LCD panel)
Note! The version 2.1 of the Wanhao i3 have a different part cooling fan housing that will make the housing to be lower than the nozzle, a custom printed part cooling fan housing could be used instead.