AC don't make a rear tower for the X2C/Mad monkey. I am pretty sure the one on the border website is actually for the truck looking at the part number.
Only rear carbon one out there at the moment for the X2c/Mad monkey is the full option one with its adapted alloy bulkhead. I have made some prototypes out of perspex, once we have finalised a design and can find some thick enough carbon there might be another option
