Proper 2004 WR450F break-in?

Delta T, what the heck is a blueprinted GYT-R tip? Never heard of available specs to blueprint it to....

It probably comes with Genuine Team Yamaha Repackable muffler bearings. :cry:

Nothing too major, but my GYTR tip had welding slag covering an estimated 21% of the outlets. I cleaned them up with a drillpress, then blended their outlets and deburred and radiused the inlet ridges at the inner end. Every little bit helps, eh?

I think I have before and after pix if you want.

Jim

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