The only way to get the Bandito is with real money.
Up until now, every bike has been available to earn as a reward for doing something in game. You could buy advantages through outfits, but the bikes were still available for free to those with enough skill, perseverance, and time.
This changes with the Bandito. It is available for purchase with real money, and no other way. For those of you considering buying it, think very carefully about the message it sends to Ubisoft. Are you prepared to spend $30 for the ultimate tier 2 bike? $45 for the bike that will crush every tier 3 record you have ever set?