Joe Ward claimed his third Irish senior title at light heavyweight on the trot with a comprehensive 25-5 win over Kenny Egan at The National Stadium while Adam Nolan also completed a three-timer.
Egan announced his retirement after his light heavyweight defeat.
Nolan was a 23-12 winner over Willie McLaughlin in the welterweight division.
Egan was bidding to become the first man to win 11 Irish senior titles and brought everything, but was simply outgunned by the sustained ferocity of an opponent 13 years his junior.
A clattering combination set up an assault which wobbled Egan in the second and, although the veteran recovered admirably, Ward kept swinging in the big scoring shots until the final bell.
Afterwards, Egan announced his retirement from the sport to a standing ovation, saying: "I'm retiring tonight in the ring. Joe is a big, strong lad and I'm glad I'm handing the mantle over to him."
In others news from Friday's action, Olympic bronze medallist Michael Conlan also made it three titles in-a-row.
In a repeat of last year’s flyweight final, the Belfast boxer always had the measure of Chris Phelan from the Ryston Boxing Club in Kildare, winning by 20 points to 9.
Ross Hickey from Saint Ann’s Boxing club won an absorbing light welterweight final beating Westport’s Ray Moylette. It was all square at 8-8 after two rounds, but Hickey claimed the third 7-3 to win on a 15-11 scoreline.
Hughie Myers, who lost last year’s final to Paddy Barnes, put in a tremendous final round to seal a 17-8 win over Thomas Waite in the light flyweight final.
At 56kg, Crumlin’s Declan Geraghty eased to a 16-7 win over Gary McKenna and Sean McComb claimed the lightweight title with a comfortable 19-7 success over George Bates 19-7.
Jason Quigley from Finn Valley, who beat Darren O’Neill en route to the final, proved too strong for Roy Sheahan at 75kg, prevailing 15 -6.That was his first title after twice losing in finals.