In combination with big bore carbs, the amount of air that original air filters or airboxes can pass can be insufficient.
These inserts allow you to simply drill additional holes of 25mm into your airbox and incorporate these little air filters into it.
They have grills are a clever way of increasing the air flow.
Choose form either blue or red filter.
it won't really make any difference to a standard bike although you would have to rejet if fitted- it's really for more highly tuned bikes where you need more airflow but want to retain the original airbox
As soon as we get new stock for Airbox Airfilter Insert, we'll send you an email.