The County Meath side beat Banbridge 15-0 in the semi-final to book their place in the decider.
While the Bruff senior side avoided relegation in the Ulster Bank League, their Under-17s reached their final with a tight 11-10 win over Westport.
The action in the All-Ireland Under-19 final gets underway in Naas at 2.30pm, and features clubs from Munster and Ulster.
The combined Shannon/St. Mary's Under-19s enjoyed a comprehensive 20-0 victory over a game Monivea side to earn their final placing, while Malone's U-19s reached the final with a triumph over Gorey.
Irish Rugby TV will be in Naas on the day to record the action and highlights will be shown next week on YouTube.