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Despite the traffic struggles, Dunlop noted that their underlying speed remained highly competitive.
“I didn’t have a free lap and we broke the lap record by nearly three seconds, so it just goes to show the pace we had at the front,” said Dunlop.
He concluded by attributing the grid arrangement decision entirely to the event officials.
“It’s just the way it was and the way the organisers done it,” said Dunlop.
In the Open Race held in mixed, damp, and drying conditions, Browne initially established a 2.388-second lead by the second lap.
Dunlop reduced the deficit by over 1.6 seconds on lap three, made his decisive pass for the lead at the end of lap five, and sealed a 4.169-second victory over Browne.
Conor Cummins finished third on his Conrod Motorsport BMW.
Ryan Whitehall placed fourth, Marcus Simpson fifth, and Shaun Buckle sixth.
The remaining top ten positions were claimed by Darryl Anderson, Joe Loughlin, James Chawke, and Richard McLoughlin.
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Notable early retirements included Michael Sweeney and Kevin Keyes.