The 10-day trial in U.S. District Court in Grand Rapids included testimony from dozens of witnesses, including admitted members of the notorious Holland Latin Kings.
Jurors found Antonio Rios and David Casillas both guilty of the racketeering conspiracy, but not guilty on other charges.
Rios, 32, was acquitted on two charges of assault with intent to murder, but found guilty of conspiracy to deliver at least 5 kilos of cocaine, the equivalent of about 11 pounds. He is currently serving a sentence of 4-40 years in prison for a 2012 cocaine delivery conviction in Ottawa County.
Casillas was found not guilty of conspiring to distribute marijuana.
The pair were arrested as part of a sweeping investigation into violence, drug trafficking and racketeering. They face more than 20 years in prison when sentenced in October.
Federal prosecutors say the Holland Latin Kings promoted its trafficking of drugs and firearms through the use of intimidation, threats, assault and murder.
The Almighty Latin Kings Nation is a national organization with chapters in several states, including Michigan. The Holland chapter was started in 1993 and became the dominant among four rival gangs in the Holland area, federal investigators said. Members of the Holland chapter indicated their affiliation through the use of hand gestures, clothing and tattoos – with black and gold being the gang's colors.