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About KBFI

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  1. I have a new 05 450 EXC with JD jetting kit that was installed before it was first started . Total time is 1.5 hours and I am getting blueing on the head pipe that extends about 3 inches past the last weld where the 2 header pipes join up at. I am at 400' asl here in Roy WA. Bike runs great but just want to make sure this is normal or not. Bob