Sorry to tell you but, that is not possible, much less rented motorcycles out of the country.
It is possible that a renter allow to you only going to Argentina . They do wit hrented cars but you must pay soem type of extra insurance.
The only way in doing that is renting from a private owner (could be) but you always have to return the bike in Chile.
Another option?, planned tour with a group.
We have found out with MOTOAVENTURA.CL and Sonia that they give you the proper documentation for Argentina and you must pay US$90 for the insurance required. For Peru is US$140 , other countries not allowed.
Last edited by GastonUSAChilePeru; 20 May 2011 at 23:48.