Hiflofiltro air filters are manufactured to fit the factory air box and are a direct replacement for original equipment filters.
Fits:
Honda RC51 (RVT1000 R) (requires 2 x air filters) (USA) (RC51) — USA 2000 to 2006,
Honda VTR1000 SP-1 (requires 2 x air filters) (RC51) 2000,
Honda VTR1000 SP-1,SP-2 (requires 2 x air filters) (SC45) 2001 to 2006