The verdicts came in Monday for Michael Boatwright, Trayvon Newsome, and Dedrick Williams. The decisions follow the jury's deliberations, which started March 8.

As we reported, 20-year-old XXX was at a South Florida motorcycle dealership almost 5 years ago when prosecutors say he became the victim of a robbery -- getting shot while in his vehicle. They say the men ran off with $50K in cash and a Louis Vuitton bag.

The 3 were charged with first-degree murder with a firearm and armed robbery ... and in closing arguments last month, defense attorney Joseph Kimok claimed evidence clears all 3 men from the crime -- saying the DNA found on the rapper's body and necklace didn't belong to them.

You'll recall, a 4th man named Robert Allen was also arrested in connection to the killing ... but he pled guilty last year to second-degree murder and agreed to testify against the other 3 suspects, adding he was hesitant about the robbery and even asked the others to ditch the idea in the moment.

In a discovery and bail hearing for Allen back in 2018, surveillance video from the dealership was shown -- which appeared to show the entire thing going down in real time.