Ireland Under-20s coach Mike Ruddock has made just one change to the side that beat Scotland for Friday's clash with Wales in Athlone (7.35pm).
Lansdowne’s Cian Kelleher replaces Adam Byrne on the wing.
No 8 Jack O'Donoghue has recovered from the knock he took late in the opening fixture to take his place in the backrow.
O'Donoghue, who scored twice against the Scots, will reprise his backrow partnership with fellow try scorer Peadar Timmins and captain Dan Leavy.
Team vice-captain Ross Byrne kicked 14 points with the boot and retains the number 10 jersey and will again be partnered at half-back by the impressive Nick McCarthy.
There are three further changes on the bench with Sean McNulty replacing Jacob Walshe, Denis Coulson replacing Shane Delahunt and Frankie Taggart in place of Rory Moloney.
Head coach Ruddock said: “We got off to a good start in difficult conditions against the Scots but Welsh will provide a much sterner test.
“An unchanged side gives us some consistency and will allow combinations to develop across the field. We have some fresh faces on the bench which will be hoping to make an impact on the game at some stage.”
Ireland: David Busby, Cian Kelleher, Garry Ringrose, Peter Robb, Ian Fitzpatrick, Ross Byrne, Nick McCarthy; Jack O'Donoghue, Dan Leavy (c), Peadar Timmins, Ross Molony, Sean O'Brien, Rory Burke, Max Abbott, Peter Dooley.
Replacements: Sean McNulty, Denis Coulson, Oisin Heffernan, Joe Joyce, Frankie Taggart, Jack Cullen, Conor McKeon, Dan Goggin.
Wales: Afon Bagshaw, Ashton Hewitt, Steffan Hughes (c), Garyn Smith, Joshua Adams, Ethan Davies, Tom Williams; Nicky Smith, Ethan Lewis, Nicky Thomas, Scott Andrews, James Sheekey, Will Boyde, James Benjamin, Ben Roach.
Replacements: Scott Otten, Luke Garrett, Callum Lewis, Rory Thornton, Ollie Griffiths, Connor Lloyd, Luke Price, Tyler Morgan.
LIVE: U20 SIX NATIONS
Live television coverage of the U20 Six Nations meeting of Ireland and Wales from 19:30 on Friday 7 February on RTÉ Two and RTE.ie (Ireland only).
LIVE: WOMEN’S SIX NATIONS
Live video streaming of the Women’s Six Nations meeting of Ireland and Wales on Friday 7 February on RTÉ.ie and irishrugby.ie. Live radio coverage on Game On from 19:00 on RTÉ 2fm and RTÉ.ie (Worldwide).
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Live television coverage of Ireland v Wales and Scotland v England from 13:30 on Saturday 8 February, and France v Italy from 14:30 on Sunday 9 February on RTÉ Two and RTE.ie (Ireland only). Live radio coverage on Saturday Sport (14:00) and Sunday Sport (14:00) on RTÉ Radio 1 and RTÉ.ie (Worldwide).
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