North Brunswick broke a 37-year senior premiership drought when they defeated Parkside by 36 points at Garvey Oval.
The Bulls, who had beaten the Red Devils three times this season prior to the game, opened with four goals to two before piling on another 11 goals to seven in the final three terms.
Brendon George was unstoppable up forward with five goals taking his season tally to 67 from 14 games, while Chris Bateman was named best afield.
Matthew David and Peter Butler were the other multiple goal kickers for the Bulls on a ground-breaking day for the club.
They will now enter Division 3 for the first time in 18 years with a flag draped around their neck. No results had been submitted for Parkside at time of publication.
Earlier in the day, the Bulls commenced proceedings with a thrilling two-point victory over Parkside in the reserves.
Leading by 17 points at three quarter time, the Bulls gave up four goals to two in the final term but held on in the clutches for an incredible victory.
Jarryd Bendall continued his outstanding recent form with a BOG performance while Thomas Falconer and Daniel Orr booted two goals each.