The young fellas piled the pressure on the senior team as they saw off France U20s with little difficulty at Dubarry Park tonight.
Nigel Carolan's side opened the scoring with a try from pacy winger Jack Owens which was duly converted by man-of-the-match Ross Byrne duly converted before the out-half added a penalty.
France drew level though with a penalty and try combination of their own before Stephen Fitzgerald edged Ireland in front once more.
The scores were left at 20-10 at the break thanks to a second Byrne penalty.
Ireland came storming out of the traps after the break and were 17 points to the good after Billy Dardis went over for Ireland's third try.
But France rallied once more with a Michaël Simutoga try followed by a Thomas Ramos penalty to keep them within touching distance.
But Byrne's third penalty put two scores between the sides again before Garry Ringrose latched onto an interception and ran half the length of the pitch to put the gloss on a stunning victory.
