Yea, simple request.
But don't discount greed and corruption. Now add in just how little most Aduana officials are paid ... and the opportunity for them to extract a "small fee" for themselves and clog the system with "make work" ridiculous paperwork. So, so inefficient!

Ideally, One should be able to show up at Aduana office, border or other Govt. office and simply hand over your TVIP, your title and be done. The state gets a free bike. They can now either store it, sell it off or crush it.
(In California ... the state PAYS YOU $1000 for retiring an old car.)

The main thing Latin govts are trying to do is collect TAX on the sale or importation of any foreign vehicle.

Imported Cars and bikes are taxed anywhere from 100% up to 400%. This is why cars/bikes are SO bloddy expensive in Latin America.

Outrageous taxes, no? So ... you would think these same Govts would make it VERY easy for a foreigner (or anyone else) to "donate" their bike. But corrupt officials get in the way ... and add LOADS of paperwork and fees all along the way.

I'm surprised Xfiltrate could not answer one of our main questions here:
Which countries stamp your bike Info into your passport, thus linking YOU and your BIKE together and meaning BOTH must travel together.

As of now, looks like NO Latin States do this ... but as said earlier, not sure!

I recently rode 20k miles around South America in every country with the exception of Venezuela and the Guyanas and in none of them was my motorcycle ever mentioned in my passport.

Passport is immigration. Vehicle is customs. In South America in my recent experience, the twain have yet to meet. It won't however stop random chit chat getting in the way of facts.

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TBS.com

During my last Latin America trip 6 years ago, the countries which stamped vehicle information in my passport were Honduras and Venezuela.

I'll add the obvious: just because it's not in a passport doesn't mean the information isn't linked to a TIP. Most countries allow departure in the absence of your vehicle, and most don't appear to cross-reference when they do so. That doesn't mean they're incapable, should they see a reason.

Mark