OEM hitches are out of stock in all of the USA and Germany for the e53. I was in Greenville, SC and they couldn't even get one.

Managed to find one though ebay, BMW of Bloomsfield had originally bought 50, and have 2 left after I bought one if anyone is seeking them out. They will quote $600 for the kit, but they are listed on their website for $470 and you can get it for that price.

$125 to UPS it to Canada... will be well worth it instead of going aftermarket.