The match, played at the Del Monte grounds in Thika town, saw a cagey affair settled by a moment of brilliance fro the Bidco ranks.
Paul Karuri slotted home in clinical fashion on 62 minutes to open up a game that had every sign of going all the way to the end without any goals.
Stima had a few chances to equalise but could not get on target while late on the home side too could have added a second or third, but missed out thanks to profligacy infront of goal.
They have 65 points from 34 games while Bandari have 70 from 33 games played. Bidco have three games left to play in the current season.