Factory Pre-Oiled Air Filter. The same factory treatment that race teams and OEMs receive is now available for all Twin Air users. Filters are pre-oiled with Twin Air BIO Foam Filter Oil using our state-of-the-art filter oiling machines to provide the ultimate consistency in pore coverage. Same industry-leading Twin Air Filter you are used to, now pre-oiled for your convenience. Come in a new, resealable bag for added convenience. Available in standard Twin Air replacement filters. We will accept your request at our earliest opportunity. This includes Republic Of Ireland. Please do not ask us to lower the value of goods this is illegal and we do not want to get involved in this kind of activity.