First Barnet goals for Wes Fonguck and Jack Barham lead the fight back as the Bees pick up maximum points this Bank Holiday weekend!
The Bees got off to the worse possible start, however. In the second minute, a ball was launched over the top of the Barnet defence, Elliott Romain latched onto it and calmly finished past Mark Cousins.
After a frantic opening period, the game settled down but not before an almost identical ball over the top found Lamar Reynolds, but this time Cousins was equal to it.
Barnet began to pepper the Dagenham box with crosses midway through the first half, David Tutonda's good delivery from the left had to be plucked out of the air by Elliott Justham.
Byron Harrison then setup Jack Barham, making his first start at The Hive, but his shot from 20-yards went just wide. Barham teed up Jack Taylor soon after but his half-volley went over.
The visitors had a major let off on the half hour mark when 'keeper Elliott Justham handled outside of the box but was shown just a yellow card by referee Adrian Quelch.
Barnet tied the game in the 42nd minute. Good play down the left between Tutonda and Harrison, the latter found Fonguck on the overlap who placed it low into the bottom left corner for his first professional goal.
After the break, Justham was forced to tip over a free kick from Jack Taylor before Cousins was called into action when he pulled off a great save through a crowd of bodies to palm Will Wright's low effort around the post.
Barnet would take the lead in the 64th minute when Harrison set the ball up kindly for Jack Barham who unleashed a great half volley from the edge of the box that flew into the top right corner.
Barham had a chance to double his tally from Tutonda's cross but his header was saved.
The Bees kept pressing for a third, as Dagenham defenders throw their bodies on the line to deny both Robson and Harrison from close range in the 83rd minute.
Dagenham substitute Tomi Adeloye had two great headers late on, the first went wide from under the crossbar and the second well saved by Cousins.
Cousins was the hero in the third minute of stoppage time as he got across quickly to stop Chike Kandi's effort at the far post.
A perfect Bank Holiday for the Bees as they take maximum points from two games in 48 hours.
Match Sponsor MOTM: Jack Barham
Barnet - Cousins, Alexander, Johnson, Robson, Adams, Harrison, J. Taylor (Mason-Clark 87), Fonguck, Tutonda, Sweeney, Barham (Coulthirst 71).
Unused - Matrevics, Sparkes, Payne
Attendance - 1,522 (378 Dagenham)
Referee - Adrian Quench