03-05-2014, 10:24 AM
I bought one for my KX550 years ago and it improved the mileage. For the CB, since it has EFI and other fun computer stuff I'm sticking with factory filter. Besides; all the dirt bikes really frown upon the K&N for dirt bikes because of their poor dust filtering and Phoenix is very very dusty; it's a damn dirty state. YMMV.
