The 1986 Chatham Cup was the 59th annual nationwide knockout football competition in New Zealand.
In the final North Shore United became the first six-times winner of the Chatham Cup.
This would have evened the tie up, as Mount Maunganui gained a lead halfway through the first half via a Tony Ferris goal.
Mount Maunganui fought back to equalise through Grant Proudman halfway through the first spell, but Shore's Darren McClennan restored their lead before half time and - thanks to the away goals rule - put them on track for the trophy.
[1] The Jack Batty Memorial Trophy for player of the final was awarded to Duncan Cole of North Shore United.