PEP boys has plenty of them, just verify the size of hole, about $9 for one. The crankcase needs to breathe thru the hose & it emits unburnt hydrocarbons into the air box so they can be reburned the second time around, kind of like a catalytic converter. Anyway, it needs to breathe but it doesn't have to breathe into the airbox, if you use a filter & let it breathe into the air it will just emit more emissions into the air. The result is: convenient setup for open airbox=good, emissions=bad!

 

Does this mean my pcv valve might hurt my bike?[img]i/expressions/face-icon-small-sad.gif[/img]