Adam Idah of Norwich scores his sides 1st goal from the penalty spot during the friendly match at Kampfbahn Schwansbell, Lunen Picture: Paul Chesterton/Focus Images (Image: Paul Chesterton)
The duo scored a brace apiece in the first half against a young Dortmund II squad, the former team of Canaries head coach Daniel Farke, who play in the fourth tier of German football.
Irish ace Idah added another two to take his tally to four goals early in the second half and complete a comfortable pre-season triumph.
Majority shareholders Delia Smith and Michael Wynn Jones, sporting director Stuart Webber and first-team player Jamal Lewis were among the spectators at Kampfbahn Schwanbell in Lunen, north of Dortmund.
They saw the young Canaries take an early lead through a penalty from Idah in the third minute, calmly sending the keeper the wrong way after a header from City centre-back Timi Odusina had clearly struck a Dortmund hand.
Adam Idah of Norwich scores his sides 1st goal from the penalty spot during the friendly match at Kampfbahn Schwansbell, Lunen Picture: Paul Chesterton/Focus Images (Image: Paul Chesterton)
Ten minutes later and it was 2-0 as forward Spyrou rose highest to head home a Bilal Kamal corner from close range and put Matt Gill's team firmly in control.
Another goal arrived for the tourists in the 24th minute when Spyrou grabbed his second, allowing a Kamal through-ball to run into his path before lashing home a powerful right-footed effort for 3-0.
Scotland international Russell Martin was playing at the centre of defence for City, with head coach Daniel Farke having confirmed a loan exit is looming for the long-serving defender.
Idah made it 4-0 with five minutes of the first half remaining as the visitors continued to dominate, finishing a slick counter-attack with a composed finish, drawing the keeper before rolling home.
Adam Idah of Norwich scores his sides 1st goal from the penalty spot during the friendly match at Kampfbahn Schwansbell, Lunen Picture: Paul Chesterton/Focus Images (Image: Paul Chesterton)
The Republic of Ireland U18 international and Essex-raised Spyrou were both part of the group of young City players who recently signed their first professional contracts with the club.
Idah, 17, added another two quick-fire goals around the hour mark to make the scoreline even more emphatic in the second half, with his four-goal haul adding to his first-team goal in the 2-1 friendly win at King's Lynn earlier in pre-season.
Spyrou's double added to his strike in the U23s' 2-1 win over Paderborn U23s on Sunday, which kicked off their training week in Germany.
City's youngsters are due to return to action next Tuesday when they take on Colchester United U23s at the League Two club's training ground (1pm kick-off).
Adam Idah of Norwich scores his sides 1st goal from the penalty spot during the friendly match at Kampfbahn Schwansbell, Lunen Picture: Paul Chesterton/Focus Images (Image: Paul Chesterton)
City U23s (starting XI): Oxborough; Kamal, Martin, Odusina, Richards; Aransibia, Payne, Coley; Idah, Spyrou, Power. Subs: McCracken, Jones, Milovanovic, Scully, Thomas
Goals: Idah (3, 42, 57, 59), Spyrou (13, 24)
Adam Idah of Norwich scores his sides 1st goal from the penalty spot during the friendly match at Kampfbahn Schwansbell, Lunen Picture: Paul Chesterton/Focus Images (Image: Paul Chesterton)
Adam Idah of Norwich scores his sides 1st goal from the penalty spot during the friendly match at Kampfbahn Schwansbell, Lunen Picture: Paul Chesterton/Focus Images (Image: Paul Chesterton)
Adam Idah of Norwich scores his sides 1st goal from the penalty spot during the friendly match at Kampfbahn Schwansbell, Lunen Picture: Paul Chesterton/Focus Images (Image: Paul Chesterton)
Adam Idah of Norwich scores his sides 1st goal from the penalty spot during the friendly match at Kampfbahn Schwansbell, Lunen Picture: Paul Chesterton/Focus Images (Image: Paul Chesterton)
Adam Idah of Norwich scores his sides 1st goal from the penalty spot during the friendly match at Kampfbahn Schwansbell, Lunen Picture: Paul Chesterton/Focus Images (Image: Paul Chesterton)
Adam Idah of Norwich scores his sides 1st goal from the penalty spot during the friendly match at Kampfbahn Schwansbell, Lunen Picture: Paul Chesterton/Focus Images (Image: Paul Chesterton)
Adam Idah of Norwich scores his sides 1st goal from the penalty spot during the friendly match at Kampfbahn Schwansbell, Lunen Picture: Paul Chesterton/Focus Images (Image: Paul Chesterton)
Adam Idah of Norwich scores his sides 1st goal from the penalty spot during the friendly match at Kampfbahn Schwansbell, Lunen Picture: Paul Chesterton/Focus Images (Image: Paul Chesterton)
Adam Idah of Norwich scores his sides 1st goal from the penalty spot during the friendly match at Kampfbahn Schwansbell, Lunen Picture: Paul Chesterton/Focus Images (Image: Paul Chesterton)
Adam Idah of Norwich scores his sides 1st goal from the penalty spot during the friendly match at Kampfbahn Schwansbell, Lunen Picture: Paul Chesterton/Focus Images (Image: Paul Chesterton)
Adam Idah of Norwich scores his sides 1st goal from the penalty spot during the friendly match at Kampfbahn Schwansbell, Lunen Picture: Paul Chesterton/Focus Images (Image: Paul Chesterton)
Adam Idah of Norwich scores his sides 1st goal from the penalty spot during the friendly match at Kampfbahn Schwansbell, Lunen Picture: Paul Chesterton/Focus Images (Image: Paul Chesterton)
Adam Idah of Norwich scores his sides 1st goal from the penalty spot during the friendly match at Kampfbahn Schwansbell, Lunen Picture: Paul Chesterton/Focus Images (Image: Paul Chesterton)
Adam Idah of Norwich scores his sides 1st goal from the penalty spot during the friendly match at Kampfbahn Schwansbell, Lunen Picture: Paul Chesterton/Focus Images (Image: Paul Chesterton)
Adam Idah of Norwich scores his sides 1st goal from the penalty spot during the friendly match at Kampfbahn Schwansbell, Lunen Picture: Paul Chesterton/Focus Images (Image: Paul Chesterton)
Adam Idah of Norwich scores his sides 1st goal from the penalty spot during the friendly match at Kampfbahn Schwansbell, Lunen Picture: Paul Chesterton/Focus Images (Image: Paul Chesterton)
Adam Idah of Norwich scores his sides 1st goal from the penalty spot during the friendly match at Kampfbahn Schwansbell, Lunen Picture: Paul Chesterton/Focus Images (Image: Paul Chesterton)
Adam Idah of Norwich scores his sides 1st goal from the penalty spot during the friendly match at Kampfbahn Schwansbell, Lunen Picture: Paul Chesterton/Focus Images (Image: Paul Chesterton)
Adam Idah of Norwich scores his sides 1st goal from the penalty spot during the friendly match at Kampfbahn Schwansbell, Lunen Picture: Paul Chesterton/Focus Images (Image: Paul Chesterton)
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