The K&N TB-6621 High-Performance Replacement Air Filter is a precision-engineered drop-in upgrade for the Triumph TRIDENT 660 / TIGER SPORT. By replacing the factory paper element with K&N's advanced oiled cotton gauze technology, this filter delivers improved airflow, sharper throttle response, and a lifetime of use through its washable and reusable construction.

• Engineered as a direct OEM drop-in replacement for the Triumph TRIDENT 660 / TIGER SPORT (660cc) — installs in minutes with no modifications

• Advanced multi-layer oiled cotton gauze traps fine particles while flowing significantly more air than standard paper elements

• Reduces intake restriction across the full RPM range for improved throttle response and acceleration

• Washable and reusable for the lifetime of the vehicle, eliminating periodic paper filter replacement costs

• Maintains the factory airbox and all OEM intake components for a clean, stock-look installation

• Tested and certified to ISO 5011 standards for verified filtration efficiency and airflow performance

• Protected by K&N's industry-leading Million Mile Limited Warranty for complete peace of mind