Did this on my blue bike, and on my dads red. First thing I did was take the breather and split it into two lines, then I took one of the lines and put a 1 way valve on the line to allow flow into the crank case, I then ran this line up and into my airbox between filter and carb, so I get filtered air into my crankcase. Then I put a 1 way valve on the other hose that allows flow out of the crank case and let this line hang down. Works like a dream, eliminates getting oil inside you're box if you do it normally, and stops water/dirt getting into carb/crankcase. For the valves I just used some small hose valves that my dad just literally had lying around, you can probably find them pretty easy.