Four Thunder players reached double figures, and the Thunder held off a late rally to pick up the road victory.
Zach Torson led Mountain View with 17 points. Taylor Drew and Luke DuChesne each had 13 points. Ryan Johnson added 12.
Drew connected on four first-half 3-pointers to get the Thunder rolling in the right direction. Mountain View scored 26 points in the second quarter.
Arlington cut a 16-point deficit to three points late in the game but never had the ball with a chance to tie.