The moment arrives for Kiama on Sunday.

After losing the past two Group Seven grand finals, the Knights overpowered last year's conquerors Shellharbour, but still have to beat Jamberoo - the team they lost the 2017 decider against - to secure the prize they crave.

The Roos broke a 43-year drought, Kiama now counting 34 years since their last triumph, as the decider looms at Collegians Sportsground, home of the newly-crowned Illawarra premiers.

Coach Matt Clarke knows recent history gives them every motivation to make the final crusade.

"I think it does," Clarke said.

"In saying that, you have still got to play a tough game of footy and today we defended really well. We're in there with a chance.

"We're a pretty small town, so to make three grand finals in a row, everyone is pretty pumped."

Jamberoo made it through with wins over Gerringong and Shellharbour, who both crashed out in straight sets.

They also beat Kiama 24-6 in their last meeting. Kiama have fed through on Jamberoo's victories to knock both the Lions out of the finals, after winning a knockout final over Nowra-Bomaderry.

The Knights have now won eight in a row, having edged in front in Sunday's final against Shellharbour through a try on half-time to Matt Morris to lead 12-10 at the break.

Grand final

Sunday

JAMBEROO v KIAMA at Collegians Sports Complex (4pm)

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