Alexander Hagberg presents the list of all X12'22 essential spare parts which are suggested to keep in your box. Alex explains each of the spart parts and why you should keep it on hand.
Here is a list of all the Essential Spare parts suggested with the link to the product page where you can find more information:
371159 Alu Rear Pod Lower Plate 2.0mm
371212 Graphite Bumper Lower Holder 2.5mm
372128 Graphite Lower Suspension Arm Plate 2.5mm
372224 Composite Steering Block for 4mm King Pin - Left - Graphite
372214 Composite Steering Block for 4mm King Pin - Right - Graphite