This kit uses direct replacement parts from Creality and comes with all the necessary components to turn your CR-10 into a CR-10S! If you are just needing the dual Z kit, visit that listing here. This will also work for the S4 (400) and S5 (500) version.
10S Upgrade kit contains:
1 Creality CR-10S (Atmega 2560) Motherboard
1 LCD with 1 ribbon cable (reuse your existing LCD cable and rotary knob )
1 Filament Runout Sensor with cable and braided sleeve