They just had enough to see off Carrig & Riverstown/Crinkle in the decider.
Kilcormac-Killoughey were crowned Offaly U20 Hurling champions for the fourth year in a row at the weekend.
Conor Slevin's side secured a 3-12 to 0-16 win over Carrig & Riverstown/Crinkle in Banagher on Saturday.
Alex Kavanagh, Charlie Mitchell and Adam Screeney got the all important goals for the double K's.
Both clubs also had players who will line out for their respective Leinster championship semi finals taking place this weekend.
Team captain Charlie Mitchell says CRC were full credit for their performance:
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