Have just fitted a Yoshimura R77 and now looking to change the air filter when I service it next just wondered what people's views on which filter to choose was.
Standard filter is fine. With an aftermarket filter the only real benefit is that it is reusable. Ie you can wash it during a service.
I've got a pipercross race filter. Instantly notice a difference in sound and a bit more grunt. Cheap to maintain too
Sprint by a county mile if your looking for max air flow.... Most of other non OE airfilters don't offer much in the way of better airflow just handy to be able to wash out and use again...