K&N filters are designed to achieve high, virtually unrestricted air flow while maintaining filtration levels critical to ensure long engine life. These high quality K&N air filters are reusable and washable, and they fit many air cleaners as stock replacement. The elements are designed with a ribbed surface that will give you up to 50% more filter area than a regular replacement filter, dramatically increasing air flow. Designed to provide increased horsepower and acceleration. Pleated cotton media provides a large filtration area offering low restriction and long service intervals. Multi-layers of woven cotton gauze media offers excellent filtration. Fits directly into OEM Airbox with application specific Sealing Bead ensuring a precise fit. No fuel management modification are normally required to obtain increased performance. Washable and reusable. DUCATI: 03-06 1000SS; 03 620 Sport; 99 750SS; 00-02 750SS i. 03 800 Sport; 03-07 800SS; 99 900SS; 00-01 900SS i. 96 M750 Monster; 01-02 Monster 400; 02-03 Monster 400 Dark; 01 Monster 400 Metallic; 03 Monster 400s; 99-01 Monster 750; 99 Monster 750 City; 99-01 Monster 750 Dark; 99 Monster 750 Dark City; 00-01 Monster 750 Metallic; 99-02 Monster 900; 99 Monster 900 City; 99 Monster 900 Cromo; 99-02 Monster 900 Dark; 99 Monster 900 Dark City; 00-01 Monster 900 Metallic; 00, 02 Monster 900 i. 99-01 Monster 900s; 97-03 ST2; 04-07 ST3; 06-07 ST3S ABS; 99-03 ST4; 03-05 ST4S ABS; 01-05 ST4s. 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.