Hiflofiltro air filters are manufactured to fit the factory air box and are a direct replacement for original equipment filters. Top quality powerflow filtering media, developed for modern high performance engines. Features: Manufactured from world-class materials to achieve optimum performance and engine protection Precision engineered to perfectly fit the factory airbox, these filters meet or exceed OEM specifications Direct replacement of original equipment filter with no need to change carburetor jets or settings Year Make Model 1990 - 2002 Honda ST1100 1992 - 1998 Honda ST1100 ABS 1990 - 1995 Honda ST1100A