This Filter Features DNA®’s Advanced Fcd (Full Contour Design). Installation Of This DNA Air Filter Is Very Easy; Simply Follow The Installation Instructions Included In The Triumph Workshop Manual. A Perfect Airtight Sealing And Trouble Free Filter Installation For The User Is Guaranteed By Using A High Quality Eva Seal. The Filtering Efficiency Is Extremely High At 98-99% Filtering Efficiency (Iso 5011), With 4 Layers Of DNA®Cotton. The Flow Of This DNA Filter Is +35.55% More Than The Stock Triumph Filter! This DNA® Filter Is Designed As A High Flow Air Filter For:’Road & Track Use’. This DNA® Filter Is Designed To Be”spark Safe” For Racing Use On Highly Tuned Engines. Triumph: 2021 TRIDENT 660 660cc; 2022 TIGER SPORT 660 660cc. 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.