The team defeated Hurricanes 20-18 in the final at the Apia Park Stadium, last Friday to win the championship.
The tough match saw Hurricanes dominating the opening minutes but failing to convert for the extra points.
The War-Kings took advantage in these areas after they scored six points - three from a dropkick and three from the penalty conversion by Apisaloma Aso.
The winners began dominating the match right before halftime after locking the points at 10-6.
