The Portland Winterhawks (21-5-0-1) traveled to Chilliwack (12-9-2-1) and dropped a 7-2 decision to the Bruins Friday.
The Winterhawks remain atop the WHL standings with 43 points.
Portland scored the lone goal of the first period when Nino Niederreiter beat Chilliwack netminder Lucas Gore at the 13:35 mark to make it 1-0.
The Winterhawks extended their lead 38 seconds into the second period when Sven Bartschi scored his 17th goal of the season to give Portland a 2-0 advantage. But the Bruins tied it up with two straight goals, beginning with a power play goal by Brandon Manning at the 7:18 mark, followed by the first goal of the season from Jeff Einhorn at the 13:53 mark to make it 2-2, a score that would last through the end of the period.
From there, the Bruins scored five goals in the third period with two from Kevin Sundher and one apiece from Ryan Howse, Steve Oursov and Brandon Magee to earn the 7-2 win.
Mac Carruth took the loss in net for Portland, while Gore got the win for the Bruins with 30 saves on 32 shots.
The Winterhawks are back in action tomorrow night with a road game in Kennewick, WA against the Tri-City Americans.