The latest I heard was Brazil no longer gives a TVIP, the last time I crossed in 2012 they did. Now you should be only limited by the time allowed on your passport VISA or stamp and your bike would not be on a time limit it would seem, maybe it is tied closer to your passport again I haven't crossed since I heard of TVIP no longer required.
Uruguay is supposed to have 12 month temporary import if asked for at certain locations, I have no personal experience with this yet.
My travel bike is still in Caracas after I crashed out in 2012 and I wait patiently until I can go again.
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