"I got the holeshot and led every lap," said Rees.
"I knew the other riders were there behind me and Jayden Carrick was trying to line me up for a pass in the Robert Holden corner on the last lap, but he was going to have to do a death or glory pass to get by me.
"I felt comfortable in the feature race and with a clear track ahead of me, I was able to go even faster than I had in qualifying."
The win made it the fourth time Rees has won the main prize at this iconic event - his first Robert Holden race victory coming 24 years earlier in 1990 - and the last time he won the race was 13 years ago in 2001.
Meanwhile, visiting Austrian rider Horst Saiger wrapped up the overall series in the F1 class with conservative third and fifth placings in his two F1 outings, while he finished fifth in the stand-alone Robert Holden race.
But that title victory was also remarkable given the series was Saiger's first race trip to New Zealand and he had not previously seen any of the Kiwi circuits prior to racing on them.
Other class winners for the series were Manukau's Toby Summers (F2 600cc class), Taumarunui's Leigh Tidman (F3 Sport bikes), Feilding's John Oliver (Bears - non-Japanese bikes), Tauranga's Duncan Hart (Super Moto), Marton's Jason Hulme (Junior Pre 89 Post Classics), Te Awanga's Eddie Kattenberg (Senior Pre 89 Post Classics), and Waikato's Aaron Lovell and Tracey Bryan (F1 sidecars).