The upgrade kit is only suitable for Raptor users.
it includes below parts:
1. electrical box with mother board,
2. switch box with PCB board,
3. extruder without BLTouch sensor,
4. extruder carriage
5. X axis belt
6. filament sensor
7. cables
so as to achieve below functions:
1. filament sensor
2. high-temp. PTFE tube
3. supports all flexible filament
4. temp. controlled hotend fan