The Wildcats earned the win in three sets, 25-19, 25-12, 25-23.
Jaelyn Sundberg posted 38 assists, seven digs and an ace for the Wildcats.
Jacy Arrigotti added six digs with four aces and Alissa Wynn had 20 digs and an ace.
Anastasia Trevino and Britta Johnson added 13 and 10 kills, respectively.
Madison Babinec led for the Eagles with seven kills and three blocks, while Kaelinn Jozsa chipped in five kills.
Gracie Wilson had 13 assists for the Eagles.
Montague (16-20-1, 5-1) will play in the GMAA City Tournament on Saturday.
Oakridge (16-15-1, 2-3) will be home on Tuesday (Oct. 18) against Fremont for league action.