The Lake Hawks led 29-20 after one quarter, then took control with a 31-10 run in the second quarter.
Josh Langford led the Lake Hawks with 25 points, while Mike Walker added 19 points.
Matt Parrish and Louis Williams contributed to the victory with eight rebounds apiece.
West Michigan improved to 6-2 on the season and is ranked eighth nationally in the ABA, which is a nationwide league with dozens of teams.
Another Michigan team, the Kalamazoo Pure, is ranked fifth in the nation.