K&N 95-03 Triumph Thunderbird Drop In Air FilterK&N's high flow air filters are available as a replacement for your stock motorcycle air filter element. They are custom engineered to fit your specific application and are designed to provide low restriction and increased performance, while providing excellent engine protection for your motorcycle. This Part Fits: Year Make Model Submodel 1996 2001 Triumph Adventurer Base 1999 2001 Triumph Legend TT Base 1995 2003 Triumph Thunderbird Base 1998 2003