It could so easily have been a Honda 1-2, however, when Tauranga's Peter Broxholme (Botany Honda CRF450X) pushed through to second place, but he was always under pressure from Smith and gambled on a "splash and dash" re-fuel to stay ahead of Smith as he started his last lap, but it wasn't enough and he ran out of gas within sight of the finish, eventually having to settle for ninth place overall.
"I had come to this event when I was a kid and always wanted to race it," said Townley.
"This was my first chance. loved it. The race was awesome. It lived up to all my expectations.
"I didn't have any problems and didn't drop the bike once. I just rode smooth and con-sistent."
The bike was the same bike Townley raced to win the Woodville and at round one of the motocross nationals in Timaru.
"We didn't install a bigger fuel tank or change the gearing or anything."
Third overall at the weekend was Taupo's Brad Groombridge (Action Suzuki RM-Z450), who snatched the final podium spot when four riders ahead of him all had problems near the end of the final lap.
Fourth overall and under-300cc four-stroke class winner was Atiamuri's Hadleigh Knight (CMR Red Bull KTM 250F), a remarkable result for the 16-year-old on debut at the event.
Townley's next focus is to tackle the annual New Zealand TT Championships near Kuratau next weekend.
This is another event at which he'll make his debut and, quite possibly, he'll be favoured to capture another domestic trophy.