However, he is not concerned about a lack of match fitness on sealed roads and in fact subscribes to the adage "it's just like riding a bike".
"I should be okay," Dibben said yesterday.
"I have been racing, just not on roads. I only found out about the Newcastle meeting late last week after Duncan rang to say he'd broken his collarbone. They managed to swap his name for mine, so I'm off with the bike to Australia."
Dibben said it would only take a few hours to put his bike back together and he was looking forward to competing again on a street circuit.
Of course he is no stranger to street racing with the final leg of the Suzuki Series raced on the Cemetery Circuit here in his hometown every Boxing Day. He also has experience on the Paeroa and Nelson streets.
"I have yet to race in Newcastle, but I think it's much tighter then the Cemetery Circuit and a bit more like Nelson. I understand it's in and out of carparks and on the streets as well, but I'm looking forward to it.
"I don't know many of the riders racing this weekend, but it doesn't matter, I'll just hop on and ride my own race - hopefully that'll be enough," Dibben said.
The Newcastle track may actually suit Dibben simply because it is a mix of road and off-road surfaces and features traditional supermoto table tops.
Dibben will have his own support crew with mum, Gailene, dad Chris, brother Michael and girlfriend Mikaela Healy also going along for the ride.