Sayeed Pridgett had 14 points and seven rebounds for Montana (22-7, 15-3 Big Sky Conference).
Carlos Hines had 18 points for the Lumberjacks (9-20, 7-12). Luke Avdalovic added 13 points. Cameron Shelton had 13 points.
The Grizzlies improve to 2-0 against the Lumberjacks this season. Montana defeated Northern Arizona 86-73 on Dec. 29. Montana takes on Portland State on the road on Thursday. Northern Arizona finishes out the regular season against Northern Colorado on the road on Saturday.