What documents required in order to pass by motorcycle from Turkey to Northern Iraq?

Move One from four years ago has:

B. Import of Vehicles

It is not allowed for individuals to import vehicles for personal use on a temporary regime, customs clearance must be done on a permanent basis. Vehicles for company use can be imported on a temporary as well as on a permanent basis.

Vehicles (non-armoured) brought into the country must be manufactured in 2010 or later, otherwise import will not be allowed. Apart from the paperwork required for customs clearance of normal household goods, the following documents are needed for import customs clearance of a vehicle:

Ownership paperwork
Certificate of title
Proforma invoice
Passport copy
Copy of BOL
In case of vehicle import for a company, approval from Ministry of Interior as well as 
 from regional customs office will be required

Payment of 8-10% duties and taxes is applicable if no diplomatic protocol is received from consignee’s Embassy. Amount of duties and taxes is calculated based on the declared customs value indicated on the proforma invoice.

The same page provides details regarding Import of Household Goods (HHG) and cautions:

Import procedure in Iraq is very time consuming and is not always running efficiently. Even the diplomatic customs clearance can take two weeks or longer.

Please note that due to the current situation in Iraq regulations change daily and rules in use in certain parts of the country may differ from the ones described above.