Hiflofiltro air filters are manufactured to fit the factory air box and are a direct replacement for original equipment filters.
Fits:
Yamaha XVZ13 A Royal Star 1999 to 2002,
Yamaha XVZ13 A Royal Star Boulevard 1999 to 2001,
Yamaha XVZ13 AH,AHC,ATH,ATHC,AT Royal Star (4YP2) 1996 to 1998