Yorkshire scored five tries in defeating Devon 34-17 to become national under-20 champions at Twickenham.
Jonny West (Yorkshire) and Dan Hawkes swapped an early penalty each before Tykes No 8 Ryan Burrows scored a try and then made one for hooker Steve Maycock.
West added his second conversion but Hawkes landed his third penalty to reduce the deficit to 17-9 at half-time.
Centre Jonathan Marshall crossed for Yorkshire within two minutes of the restart, West converting, and lock Jacob Brady also got a touchdown for the Tykes.
Devon were given hope by a Joe Skinnard try and Hawkes penalty but winger Sam Booth's 67th-minute try clinched matters for the White Rose side.
Meanwhile, Yorkshire's seniors - who may be without Bees full back Ben Greaves (concussion) - and holders Lancashire have a winner-takes-all Roses match at Sedgley Park on Saturday.
They both made it two wins from two matches in the Bill Beaumont Cup on Saturday. with Yorkshire beating Cheshire 21-20 at Harrogate.
The prize will be a place in the final at Twickenham on Monday, May 28.
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