Busaboy1992
Registered
pulled the air box off the bike and looked down the butterfly into the piston and it has circular ring in the walls all the way around. is this normal or should i be worried?
Chances are you're seeing the crosshatchings in the cylinder walls themselves. If those weren't there you would be burning oil like crazy and have low compression. They are a good thing. Google 'Cylinder Wall Crosshatch' and tell me if that's what you're seeing. Like I said, if that's it, then it's a good thing.