CIYMS made it an All-Ireland double after a resounding 225-run win over fellow NCU side Lisburn at Bready.
Having been asked to bat, the Belmont side got a customary fast start from Ross Adair, who hit 4 fours and a six in his 32 from 30 balls.
The game though was ultimately decided by a record-equalling second wicket stand of 174 between Man-of-the-Match John Matchett and Chris Dougherty.
The pair matched each other blow for blow, scoring 12 boundaries apiece, with Matchett making 94 and Dougherty 93.
The platform was perfect for CI, who added 101 in the last 10 overs – Jason van der Merwe bludgeoning five sixes and 2 fours in a brutal 49 from 23 balls to take them to a record final score of 321 for 6.
Faiz Fazal (30) threw a few blows in the reply, but the chase never got going as Lisburn were skittled for 96.
Skipper Nigel Jones took 3 for 15 including the prize scalp of Fazal, while there were two apiece for Jacob Mulder and Graham Kennedy in the one-sided win.