intake

I saw quite a few air filters with palm-sized oily dirt stains from FZ6R (source: youtube, etc.). I checked mine yesterday, it was the same thing. It makes me wonder if the intake system design was flawed so that it allows oily dirt to get in?

Hello, I'm considering a valve spring tune and I need to know the spring o.d. I know all the spring specs but the diameter... Appreciate some help here! Thanks... For those who might interest: Intake liftmm6.90 Exhaust liftmm6.90 Intake free lengthmm39.08 Exhaust free lengthmm39.08 Intake...

I am getting a new intake and I have no idea how to install it or even how to get to the old intake......HELP?:surrender::surrender: