Looking for an air filter...

[FrankTate]

Where can I get an upgrade air filter from?

 

[Ghost0]

Some have tried crank case breather filters but it is difficult to find one that fits without modification. We carry some that bolt on directly.
Sick Bike Parts Products

 

[jburr36]

I suppose if one was willing to put forth a little effort in a modification an air filter like this could be retrofitted to these engines. This one is from scooterparts4less.com